PHOSPHORIC ACID
Chemwatch Material Safety Data Sheet
Issue Date: 21-Jun-2007 CHEMWATCH 1805
NC317TCP Version No:6
CD 2007/3 Page 1 of 15
Section 1 - CHEMICAL PRODUCT AND COMPANY IDENTIFICATION
PRODUCT NAME
PHOSPHORIC ACID
SYNONYMS
H3-P-04, H3-P-04, "orthophosphoric acid"
PROPER SHIPPING NAME
PHOSPHORIC ACID, SOLUTION
PRODUCT USE
Manufacture of superphosphate fertilisers, phosphate salts, detergents. Used as an acid
catalyst in making ethylene and purifying hydrogen peroxide. Used in dental cement,
process engraving and as an analytical agent. In food and soft drinks for sharp taste,
tang as Food Additive 338. Intermediate
SUPPLIER
Company: Quantum Chemicals Pty Ltd
Address:
70 Quantum Close
Dandenong South
Victoria 3175
Telephone: 03 8795 8000
Emergency Tel: 1300 131 001
Fax: 03 8795 8099
HAZARD RATINGS
Flammability
Toxicity
Body Contact
Reactivity
Chronic
SCALE: Min/Nil=0 Low=1 Moderate=2 High=3 Extreme=4
Section 2 - HAZARDS IDENTIFICATION
STATEMENT OF HAZARDOUS NATURE
HAZARDOUS SUBSTANCE. DANGEROUS GOODS. According to the Criteria of NOHSC,
PHOSPHORIC ACID
Chemwatch Material Safety Data Sheet
Issue Date: 21-Jun-2007 CHEMWATCH 1805
NC317TCP Version No:6
CD 2007/3 Page 2 of 15
Section 2 - HAZARDS IDENTIFICATION
and the ADG Code.
POISONS SCHEDULE
S6 NZS3
RISK SAFETY
Harmful if swallowed. Keep locked up.
Causes burns. Do not breathe gas/ fumes/ vapour/ spray.
Risk of serious damage to eyes. Avoid contact with eyes.
Toxic to aquatic organisms may cause long- term Wear suitable protective clothing.
adverse effects in the aquatic environment.
May cause long- term adverse effects in the Use only in well ventilated areas.
environment.
Skin contact may produce health damage*. Keep container in a well ventilated place.
Inhalation may produce serious health damage*. To clean the floor and all objects contaminated
by this material use water.
Cumulative effects may result following Keep container tightly closed.
exposure*.
* (limited evidence). This material and its container must be disposed
of in a safe way.
Take off immediately all contaminated clothing.
In case of accident or if you feel unwell
IMMEDIATELY contact Doctor or Poisons
Information Centre (show label if possible).
Use appropriate container to avoid environment
contamination.
Avoid release to the environment. Refer to
special instructions/ safety data sheets.
This material and its container must be disposed
of as hazardous waste.
In case of accident by inhalation: remove
casualty to fresh air and keep at rest.
Section 3 - COMPOSITION / INFORMATION ON INGREDIENTS
NAME CAS RN %
phosphoric acid 7664-38-2 >85
water 7732-18-5 >10
Section 4 - FIRST AID MEASURES
SWALLOWED
路 For advice, contact a Poisons Information Centre or a doctor at once.
路 Urgent hospital treatment is likely to be needed.
路 If swallowed do NOT induce vomiting.
路 If vomiting occurs, lean patient forward or place on left side (head-down position, if
possible) to maintain open airway and prevent aspiration.
路 Observe the patient carefully.
路 Never give liquid to a person showing signs of being sleepy or with reduced awareness;
PHOSPHORIC ACID
Chemwatch Material Safety Data Sheet
Issue Date: 21-Jun-2007 CHEMWATCH 1805
NC317TCP Version No:6
CD 2007/3 Page 3 of 15
Section 4 - FIRST AID MEASURES
i.e. becoming unconscious.
路 Give water to rinse out mouth, then provide liquid slowly and as much as casualty can
comfortably drink.
路 Transport to hospital or doctor without delay.
EYE
If this product comes in contact with the eyes:
路 Immediately hold eyelids apart and flush the eye continuously with running water.
路 Ensure complete irrigation of the eye by keeping eyelids apart and away from eye and
moving the eyelids by occasionally lifting the upper and lower lids.
路 Continue flushing until advised to stop by the Poisons Information Centre or a doctor,
or for at least 15 minutes.
路 Transport to hospital or doctor without delay.
路 Removal of contact lenses after an eye injury should only be undertaken by skilled
personnel.
SKIN
If skin or hair contact occurs:
路 Immediately flush body and clothes with large amounts of water, using safety shower if
available.
路 Quickly remove all contaminated clothing, including footwear.
路 Wash skin and hair with running water. Continue flushing with water until advised to
stop by the Poisons Information Centre.
路 Transport to hospital, or doctor.
INHALED
路 If fumes or combustion products are inhaled remove from contaminated area.
路 Lay patient down. Keep warm and rested.
路 Prostheses such as false teeth, which may block airway, should be removed, where
possible, prior to initiating first aid procedures.
路 Apply artificial respiration if not breathing, preferably with a demand valve
resuscitator, bag-valve mask device, or pocket mask as trained. Perform CPR if necessary.
路 Transport to hospital, or doctor, without delay.
NOTES TO PHYSICIAN
For acute or short term repeated exposures to strong acids:
路 Airway problems may arise from laryngeal edema and inhalation exposure. Treat with 100%
oxygen initially.
路 Respiratory distress may require cricothyroidotomy if endotracheal intubation is
contraindicated by excessive swelling
路 Intravenous lines should be established immediately in all cases where there is
evidence of circulatory compromise.
路 Strong acids produce a coagulation necrosis characterised by formation of a coagulum
(eschar) as a result of the dessicating action of the acid on proteins in specific
tissues.
INGESTION:
路 Immediate dilution (milk or water) within 30 minutes post ingestion is recommended.
路 DO NOT attempt to neutralise the acid since exothermic reaction may extend the
corrosive injury.
路 Be careful to avoid further vomit since re-exposure of the mucosa to the acid is
harmful. Limit fluids to one or two glasses in an adult.
路 Charcoal has no place in acid management.
路 Some authors suggest the use of lavage within 1 hour of ingestion.
SKIN:
路 Skin lesions require copious saline irrigation. Treat chemical burns as thermal burns
with non-adherent gauze and wrapping.
路 Deep second-degree burns may benefit from topical silver sulfadiazine.
EYE:
路 Eye injuries require retraction of the eyelids to ensure thorough irrigation of the
conjuctival cul-de-sacs. Irrigation should last at least 20-30 minutes. DO NOT use
PHOSPHORIC ACID
Chemwatch Material Safety Data Sheet
Issue Date: 21-Jun-2007 CHEMWATCH 1805
NC317TCP Version No:6
CD 2007/3 Page 4 of 15
Section 4 - FIRST AID MEASURES
neutralising agents or any other additives. Several litres of saline are required.
路 Cycloplegic drops, (1% cyclopentolate for short-term use or 5% homatropine for longer
term use) antibiotic drops, vasoconstrictive agents or artificial tears may be indicated
dependent on the severity of the injury.
路 Steroid eye drops should only be administered with the approval of a consulting
ophthalmologist).
[Ellenhorn and Barceloux: Medical Toxicology].
Section 5 - FIRE FIGHTING MEASURES
EXTINGUISHING MEDIA
路 Water spray or fog.
路 Foam.
路 Dry chemical powder.
路 BCF (where regulations permit).
路 Carbon dioxide.
FIRE FIGHTING
路 Alert Fire Brigade and tell them location and nature of hazard.
路 Wear full body protective clothing with breathing apparatus.
路 Prevent, by any means available, spillage from entering drains or water course.
路 Use fire fighting procedures suitable for surrounding area.
路 Do not approach containers suspected to be hot.
路 Cool fire exposed containers with water spray from a protected location.
路 If safe to do so, remove containers from path of fire.
路 Equipment should be thoroughly decontaminated after use.
FIRE/EXPLOSION HAZARD
路 Non combustible.
路 Not considered to be a significant fire risk.
路 Acids may react with metals to produce hydrogen, a highly flammable and explosive gas.
路 Heating may cause expansion or decomposition leading to violent rupture of containers.
路 May emit corrosive, poisonous fumes. May emit acrid smoke.
Decomposition may produce toxic fumes of: phosphorus oxides (POx).
FIRE INCOMPATIBILITY
None known.
HAZCHEM: 2R
Section 6 - ACCIDENTAL RELEASE MEASURES
EMERGENCY PROCEDURES
MINOR SPILLS
Environmental hazard - contain spillage.
路 Clean up all spills immediately.
路 Avoid breathing vapours and contact with skin and eyes.
路 Control personal contact by using protective equipment.
路 Contain and absorb spill with sand, earth, inert material or vermiculite.
路 Wipe up.
路 Place in a suitable labelled container for waste disposal.
MAJOR SPILLS
Environmental hazard - contain spillage.
Chemical Class:acidic compounds, inorganic
PHOSPHORIC ACID
Chemwatch Material Safety Data Sheet
Issue Date: 21-Jun-2007 CHEMWATCH 1805
NC317TCP Version No:6
CD 2007/3 Page 5 of 15
Section 6 - ACCIDENTAL RELEASE MEASURES
For release onto land: recommended sorbents listed in order of priority.
SORBENT TYPE RANK APPLICATION COLLECTION LIMITATIONS
LAND SPILL - SMALL
foamed glass - 1 throw pitchfork R, P, DGC, RT
pillows
expanded mineral - 2 shovel shovel R, I, W, P, DGC
particulate
foamed glass - 2 shovel shovel R, W, P, DGC
particulate
LAND SPILL - MEDIUM
expanded mineral - 1 blower skiploader R, I, W, P, DGC
particulate
foamed glass- 2 blower skiploader R, W, P, DGC
particulate
foamed glass - 3 throw skiploader R, W, P, DGC
particulate
Legend
DGC: Not effective where ground cover is dense
R; Not reusable
I: Not incinerable
P: Effectiveness reduced when rainy
RT:Not effective where terrain is rugged
SS: Not for use within environmentally sensitive sites
W: Effectiveness reduced when windy
Reference: Sorbents for Liquid Hazardous Substance Cleanup and Control;
R.W Melvold et al: Pollution Technology Review No. 150: Noyes Data Corporation 1988.
路 Clear area of personnel and move upwind.
路 Alert Fire Brigade and tell them location and nature of hazard.
路 Wear full body protective clothing with breathing apparatus.
路 Prevent, by any means available, spillage from entering drains or water course.
路 Stop leak if safe to do so.
路 Contain spill with sand, earth or vermiculite.
路 Collect recoverable product into labelled containers for recycling.
路 Neutralise/decontaminate residue.
路 Collect solid residues and seal in labelled drums for disposal.
路 Wash area and prevent runoff into drains.
路 After clean up operations, decontaminate and launder all protective clothing and
equipment before storing and re-using.
路 If contamination of drains or waterways occurs, advise emergency services.
PROTECTIVE ACTIONS FOR SPILL
PHOSPHORIC ACID
Chemwatch Material Safety Data Sheet
Issue Date: 21-Jun-2007 CHEMWATCH 1805
NC317TCP Version No:6
CD 2007/3 Page 6 of 15
Section 6 - ACCIDENTAL RELEASE MEASURES
PROTECTIVE ACTION ZONE
half
evacuation
downwind
direction
distance
down wind distance
wind isolation
distance
direction
half
evacuation downwind
INITIAL direction distance
ISOLATION
ZONE
From IERG (Canada/Australia)
Isolation Distance 25 metres
Downwind Protection Distance 250 metres
IERG Number 37
FOOTNOTES
1 PROTECTIVE ACTION ZONE is defined as the area in which people are at risk of harmful exposure. This zone
assumes that random changes in wind direction confines the vapour plume to an area within 30 degrees on
either side of the predominant wind direction, resulting in a crosswind protective action distance equal
to the downwind protective action distance.
2 PROTECTIVE ACTIONS should be initiated to the extent possible, beginning with those closest to the spill
and working away from the site in the downwind direction. Within the protective action zone a level of
vapour concentration may exist resulting in nearly all unprotected persons becoming incapacitated and
unable to take protective action and/or incurring serious or irreversible health effects.
3 INITIAL ISOLATION ZONE is determined as an area, including upwind of the incident, within which a high
probability of localised wind reversal may expose nearly all persons without appropriate protection to
life-threatening concentrations of the material.
4 SMALL SPILLS involve a leaking package of 200 litres (55 US gallons) or less, such as a drum (jerrican or
box with inner containers). Larger packages leaking less than 200 litres and compressed gas leaking from
a small cylinder are also considered "small spills".
LARGE SPILLS involve many small leaking packages or a leaking package of greater than 200 litres, such as
a cargo tank, portable tank or a "one-tonne" compressed gas cylinder.
5 Guide 154 is taken from the US DOT emergency response guide book.
6 IERG information is derived from CANUTEC - Transport Canada.
EMERGENCY RESPONSE PLANNING GUIDELINES (ERPG)
The maximum airborne concentration below which it is believed that nearly all individuals could be exposed
for up to one hour WITHOUT experiencing or developing
life-threatening health effects is:
phosphoric acid 500 mg/m鲁
irreversible or other serious effects or symptoms which could impair an individual's ability to take
protective action is:
phosphoric acid 5 mg/m鲁
other than mild, transient adverse effects without perceiving a clearly defined odour is:
phosphoric acid 3 mg/m鲁
The threshold concentration below which most people will experience no appreciable risk of health effects:
phosphoric acid 1 mg/m鲁
American Industrial Hygiene Association (AIHA)
Ingredients considered according to the following cutoffs
Very Toxic (T+) >= 0.1% Toxic (T) >= 3.0%
PHOSPHORIC ACID
Chemwatch Material Safety Data Sheet
Issue Date: 21-Jun-2007 CHEMWATCH 1805
NC317TCP Version No:6
CD 2007/3 Page 7 of 15
Section 6 - ACCIDENTAL RELEASE MEASURES
R50 >= 0.25% Corrosive (C) >= 5.0%
R51 >= 2.5%
else >= 10%
where percentage is percentage of ingredient found in the mixture
Personal Protective Equipment advice is contained in Section 8 of the MSDS.
Section 7 - HANDLING AND STORAGE
PROCEDURE FOR HANDLING
DO NOT allow clothing wet with material to stay in contact with skin.
路 Avoid all personal contact, including inhalation.
路 Wear protective clothing when risk of exposure occurs.
路 Use in a well-ventilated area.
路 Avoid contact with moisture.
路 Avoid contact with incompatible materials.
路 When handling, DO NOT eat, drink or smoke.
路 Keep containers securely sealed when not in use.
路 Avoid physical damage to containers.
路 Always wash hands with soap and water after handling.
路 Work clothes should be laundered separately. Launder contaminated clothing before re
-use.
路 Use good occupational work practice.
路 Observe manufacturer's storing and handling recommendations.
路 Atmosphere should be regularly checked against established exposure standards to ensure
safe working conditions are maintained.
SUITABLE CONTAINER
DO NOT use aluminium or galvanised containers.
Glass container.
路 Lined metal can, lined metal pail/ can.
路 Plastic pail.
路 Polyliner drum.
路 Packing as recommended by manufacturer.
路 Check all containers are clearly labelled and free from leaks.
STORAGE INCOMPATIBILITY
Reacts vigorously with alkalis.
Reacts with mild steel, galvanised steel / zinc producing hydrogen gas which may form an
explosive mixture with air.
Avoid strong bases.
路 Inorganic acids are generally soluble in water with the release of hydrogen ions. The
resulting solutions have pH's of less than 7.0.
路 Inorganic acids neutralise chemical bases (for example: amines and inorganic
hydroxides) to form salts.
路 Neutralisation can generate dangerously large amounts of heat in small spaces.
路 The dissolution of inorganic acids in water or the dilution of their concentrated
solutions with additional water may generate significant heat.
路 The addition of water to inorganic acids often generates sufficient heat in the small
region of mixing to cause some of the water to boil explosively. The resulting "bumping"
can spatter the acid.
路 Inorganic acids react with active metals, including such structural metals as aluminum
and iron, to release hydrogen, a flammable gas.
路 Inorganic acids can initiate the polymerisation of certain classes of organic
compounds.
路 Inorganic acids react with cyanide compounds to release gaseous hydrogen cyanide.
路 Inorganic acids generate flammable and/or toxic gases in contact with dithiocarbamates,
isocyanates, mercaptans, nitrides, nitriles, sulfides, and strong reducing agents.
PHOSPHORIC ACID
Chemwatch Material Safety Data Sheet
Issue Date: 21-Jun-2007 CHEMWATCH 1805
NC317TCP Version No:6
CD 2007/3 Page 8 of 15
Section 7 - HANDLING AND STORAGE
Additional gas-generating reactions occur with sulfites, nitrites, thiosulfates (to give
H2S and SO3), dithionites (SO2), and even carbonates.
路 Acids often catalyse (increase the rate of) chemical reactions.
路 Phosphates are incompatible with oxidising and reducing agents.
路 Phosphates are susceptible to formation of highly toxic and flammable phosphine gas in
the presence of strong reducing agents such as hydrides.
路 Partial oxidation of phosphates by oxidizing agents may result in the release of toxic
phosphorus oxides.
STORAGE REQUIREMENTS
路 Store in original containers.
路 Keep containers securely sealed.
路 Store in a cool, dry, well-ventilated area.
路 Store away from incompatible materials and foodstuff containers.
路 Protect containers against physical damage and check regularly for leaks.
路 Observe manufacturer's storing and handling recommendations.
_____________________________________________________
SAFE STORAGE WITH OTHER CLASSIFIED CHEMICALS
+ + + + + +
_____________________________________________________
+: May be stored together
O: May be stored together with specific preventions
X: Must not be stored together
Section 8 - EXPOSURE CONTROLS / PERSONAL PROTECTION
EXPOSURE CONTROLS
Source Material TWA mg/m鲁 STEL mg/m鲁
_________ _________ _____ _____
Australia Exposure phosphoric acid 1 3
Standards (Phosphoric acid)
The following materials had no OELs on our records
鈥? water: CAS:7732- 18- 5
EMERGENCY EXPOSURE LIMITS
Material Revised IDLH Value (mg/m3) Revised IDLH Value (ppm)
phosphoric acid 1, 000
MATERIAL DATA
The saturated vapour concentration of phosphoric acid exceeds the TLV.
The TLV-TWA is based by analogy from comparable experience and data for
sulfuric acid. Exposure at or below this limit is thought to prevent
throat irritation amongst unacclimatised workers.
Fumes of phosphorus pentoxide at concentrations between 0.8 and 5.4 mg/m3
were reported to be noticeable but not uncomfortable whilst concentrations
between 3.6 and 11.3 mg/m3 produced coughing in unacclimatised workers but
were tolerable. Concentrations of 100 mg/m3 were unbearable except in
inured workers.
INGREDIENT DATA
WATER:
No exposure limits set by NOHSC or ACGIH.
PHOSPHORIC ACID
Chemwatch Material Safety Data Sheet
Issue Date: 21-Jun-2007 CHEMWATCH 1805
NC317TCP Version No:6
CD 2007/3 Page 9 of 15
Section 8 - EXPOSURE CONTROLS / PERSONAL PROTECTION
PERSONAL PROTECTION
EYE
路 Chemical goggles.
路 Full face shield may be required for supplementary but never for primary protection of
eyes
路 Contact lenses may pose a special hazard; soft contact lenses may absorb and
concentrate irritants. A written policy document, describing the wearing of lens or
restrictions on use, should be created for each workplace or task. This should include a
review of lens absorption and adsorption for the class of chemicals in use and an account
of injury experience. Medical and first-aid personnel should be trained in their removal
and suitable equipment should be readily available. In the event of chemical exposure,
begin eye irrigation immediately and remove contact lens as soon as practicable. Lens
should be removed at the first signs of eye redness or irritation - lens should be
removed in a clean environment only after workers have washed hands thoroughly. [CDC
NIOSH Current Intelligence Bulletin 59].
HANDS/FEET
Suitability and durability of glove type is dependent on usage. Factors such as:
路 frequency and duration of contact,
路 chemical resistance of glove material,
路 glove thickness and
路 dexterity,
are important in the selection of gloves.
Wear chemical protective gloves, eg. PVC.
Wear safety footwear or safety gumboots, eg. Rubber.
When handling corrosive liquids, wear trousers or overalls outside of boots, to avoid
spills entering boots.
#76b-p()
OTHER
路 Overalls.
路 PVC Apron.
路 PVC protective suit may be required if exposure severe.
路 Eyewash unit.
路 Ensure there is ready access to a safety shower.
GLOVE SELECTION INDEX
Glove selection is based on a modified presentation of the:
" Forsberg Clothing Performance Index" .
The effect(s) of the following substance(s) are taken into account in the
computer- generated selection: phosphoric acid
Protective Material CPI *.
__________________________________________
NAT+NEOPR+NITRILE A
NATURAL RUBBER A
NATURAL+NEOPRENE A
NEOPRENE/NATURAL A
NITRILE A
NITRILE+PVC A
PHOSPHORIC ACID
Chemwatch Material Safety Data Sheet
Issue Date: 21-Jun-2007 CHEMWATCH 1805
NC317TCP Version No:6
CD 2007/3 Page 10 of 15
Section 8 - EXPOSURE CONTROLS / PERSONAL PROTECTION
PE A
PVC A
SARANEX- 23 A
NEOPRENE A
__________________________________________
* CPI - Chemwatch Performance Index
A: Best Selection
B: Satisfactory; may degrade after 4 hours continuous immersion
C: Poor to Dangerous Choice for other than short term immersion
NOTE: As a series of factors will influence the actual performance of the glove,
a final selection must be based on detailed observation. -
* Where the glove is to be used on a short term, casual or infrequent basis,
factors such as "feel" or convenience (e.g. disposability), may dictate a choice
of gloves which might otherwise be unsuitable following long-term or frequent use.
A qualified practitioner should be consulted.
RESPIRATOR
Selection of the Class and Type of respirator will depend upon the level of breathing
zone contaminant and the chemical nature of the contaminant. Protection Factors (defined
as the ratio of contaminant outside and inside the mask) may also be important.
Breathing Zone Level Maximum Protection Half- face Respirator Full- Face Respirator
ppm (volume) Factor
1000 10 B- AUS P -
1000 50 - B- AUS P
5000 50 Airline * -
5000 100 - B- 2 P
10000 100 - B- 3 P
100+ Airline**
* - Continuous Flow ** - Continuous-flow or positive pressure demand.
The local concentration of material, quantity and conditions of use determine the type of
personal protective equipment required.
For further information consult site specific
CHEMWATCH data (if available), or your
Occupational Health and Safety Advisor.
ENGINEERING CONTROLS
Local exhaust ventilation usually required. If risk of overexposure exists, wear approved
respirator. Correct fit is essential to obtain adequate protection. Supplied-air type
respirator may be required in special circumstances. Correct fit is essential to ensure
adequate protection.
An approved self contained breathing apparatus (SCBA) may be required in some situations.
Provide adequate ventilation in warehouse or closed storage area. Air contaminants
generated in the workplace possess varying "escape" velocities which, in turn, determine
the "capture velocities" of fresh circulating air required to effectively remove the
contaminant.
Type of Contaminant: Air Speed:
solvent, vapours, degreasing etc., evaporating 0.25- 0.5 m/s (50- 100 f/min.)
from tank (in still air).
aerosols, fumes from pouring operations, 0.5- 1 m/s (100- 200 f/min.)
intermittent container filling, low speed
conveyer transfers, welding, spray drift,
plating acid fumes, pickling (released at low
velocity into zone of active generation)
direct spray, spray painting in shallow booths, 1- 2.5 m/s (200- 500 f/min.)
drum filling, conveyer loading, crusher dusts,
gas discharge (active generation into zone of
PHOSPHORIC ACID
Chemwatch Material Safety Data Sheet
Issue Date: 21-Jun-2007 CHEMWATCH 1805
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CD 2007/3 Page 11 of 15
Section 8 - EXPOSURE CONTROLS / PERSONAL PROTECTION
rapid air motion)
grinding, abrasive blasting, tumbling, high 2.5- 10 m/s (500- 2000 f/min.)
speed wheel generated dusts (released at high
initial velocity into zone of very high rapid
air motion).
Within each range the appropriate value depends on:
Lower end of the range Upper end of the range
1: Room air currents minimal or favourable to 1: Disturbing room air currents
capture
2: Contaminants of low toxicity or of nuisance 2: Contaminants of high toxicity
value only.
3: Intermittent, low production. 3: High production, heavy use
4: Large hood or large air mass in motion 4: Small hood- local control only
Simple theory shows that air velocity falls rapidly with distance away from the opening
of a simple extraction pipe. Velocity generally decreases with the square of distance
from the extraction point (in simple cases). Therefore the air speed at the extraction
point should be adjusted, accordingly, after reference to distance from the contaminating
source. The air velocity at the extraction fan, for example, should be a minimum of 1-2
m/s (200-400 f/min) for extraction of solvents generated in a tank 2 meters distant from
the extraction point. Other mechanical considerations, producing performance deficits
within the extraction apparatus, make it essential that theoretical air velocities are
multiplied by factors of 10 or more when extraction systems are installed or used.
Section 9 - PHYSICAL AND CHEMICAL PROPERTIES
APPEARANCE
Clear colourless odourless syrupy liquid with acid reaction; mixes with water. Commercial
phosphoric acid @ 75- 85% is a mobile liquid. Viscosity @ 30 deg, C: 75% (7 cP); 81.5% (25
cP); 85% (32 cP). Dissociation constants @ 25 deg C: Step 1 7.52 x 10e- 3 (2.12 pH); Step
2 6.23 x 10e- 8 (7.21pH); Step 3 2.2 x 10e- 13 (12.67pH) High concentrations may
crystallize in cold weather. Acid at 100% is in the form of crystals. Mixes with water and
alcohol.
PHYSICAL PROPERTIES
Liquid.
Mixes with water.
Corrosive.
Acid.
Toxic or noxious vapours/gas.
Molecular Weight: 98.00 (100%). Boiling Range (掳C): 154(85%)135(75%)
Melting Range (掳C): 21(85%)- 17.5 75% Specific Gravity (water=1): 1.58@75%1.65- 1.8
Solubility in water (g/L): Miscible pH (as supplied): Not available
pH (1% solution): 2.12 Step 1 0.1N Vapour Pressure (kPa): 0.75 75% @20C
Volatile Component (%vol): 15- 25 (water) Evaporation Rate: Very Slow
Relative Vapour Density (air=1): Not available. Flash Point (掳C): Not available
Lower Explosive Limit (%): Not applicable Upper Explosive Limit (%): Not applicable
Autoignition Temp (掳C): Not applicable Decomposition Temp (掳C): Not Available
State: Liquid Viscosity: Not Available
PHOSPHORIC ACID
Chemwatch Material Safety Data Sheet
Issue Date: 21-Jun-2007 CHEMWATCH 1805
NC317TCP Version No:6
CD 2007/3 Page 12 of 15
Section 10 - CHEMICAL STABILITY AND REACTIVITY INFORMATION
CONDITIONS CONTRIBUTING TO INSTABILITY
Contact with alkaline material liberates heat.
Section 11 - TOXICOLOGICAL INFORMATION
POTENTIAL HEALTH EFFECTS
ACUTE HEALTH EFFECTS
SWALLOWED
Accidental ingestion of the material may be harmful; animal experiments indicate that
ingestion of less than 150 gram may be fatal or may produce serious damage to the health
of the individual.
The material can produce chemical burns within the oral cavity and gastrointestinal tract
following ingestion.
EYE
The material can produce chemical burns to the eye following direct contact. Vapours or
mists may be extremely irritating.
If applied to the eyes, this material causes severe eye damage.
SKIN
Skin contact with the material may damage the health of the individual; systemic effects
may result following absorption.
The material can produce chemical burns following direct contact
with the skin.
The material may cause moderate inflammation of the skin either following direct contact
or after a delay of some time. Repeated exposure can cause contact dermatitis which is
characterised by redness, swelling and blistering.
Entry into the blood-stream, through, for example, cuts, abrasions or lesions, may
produce systemic injury with harmful effects. Examine the skin prior to the use of the
material and ensure that any external damage is suitably protected.
INHALED
Inhalation of aerosols (mists, fumes), generated by the material during the course of
normal handling, may produce serious damage to the health of the individual.
High concentrations cause inflamed airways and watery swelling
of the lungs with oedema.
CHRONIC HEALTH EFFECTS
Repeated or prolonged exposure to acids may result in the erosion of teeth, swelling
and/or ulceration of mouth lining. Irritation of airways to lung, with cough, and
inflammation of lung tissue often occurs. Chronic exposure may inflame the skin or
conjunctiva.
Substance accumulation, in the human body, may occur and may cause some concern following
repeated or long-term occupational exposure.
Sodium phosphate dibasic can cause stones in the kidney, loss of mineral from the bones
and loss of thyroid gland function.
TOXICITY AND IRRITATION
unless otherwise specified data extracted from RTECS - Register of Toxic Effects of Chemical Substances.
TOXICITY IRRITATION
Unreported (human) LDLo: 220 mg/kg Skin (rabbit):595 mg/24h - SEVERE
Oral (rat) LD50: 1530 mg/kg Eye (rabbit): 119 mg - SEVERE
Oral (rat) LD50: 3500 mg/kg* [Monsanto]*
Dermal (rabbit) LD50: >1260 mg/kg*
PHOSPHORIC ACID
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CD 2007/3 Page 13 of 15
Section 11 - TOXICOLOGICAL INFORMATION
The material may produce severe irritation to the eye causing pronounced inflammation.
Repeated or prolonged exposure to irritants may produce conjunctivitis.
The material may cause severe skin irritation after prolonged or repeated exposure and
may produce on contact skin redness, swelling, the production of vesicles, scaling and
thickening of the skin. Repeated exposures may produce severe ulceration.
Asthma-like symptoms may continue for months or even years after exposure to the material
ceases. This may be due to a non-allergenic condition known as reactive airways
dysfunction syndrome (RADS) which can occur following exposure to high levels of highly
irritating compound. Key criteria for the diagnosis of RADS include the absence of
preceding respiratory disease, in a non-atopic individual, with abrupt onset of
persistent asthma-like symptoms within minutes to hours of a documented exposure to the
irritant. A reversible airflow pattern, on spirometry, with the presence of moderate to
severe bronchial hyperreactivity on methacholine challenge testing and the lack of
minimal lymphocytic inflammation, without eosinophilia, have also been included in the
criteria for diagnosis of RADS. RADS (or asthma) following an irritating inhalation is an
infrequent disorder with rates related to the concentration of and duration of exposure
to the irritating substance. Industrial bronchitis, on the other hand, is a disorder that
occurs as result of exposure due to high concentrations of irritating substance (often
particulate in nature) and is completely reversible after exposure ceases. The disorder
is characterised by dyspnea, cough and mucus production.
phosphoric acid ( 85%)
WATER:
unless otherwise specified data extracted from RTECS - Register of Toxic Effects of Chemical Substances.
No significant acute toxicological data identified in literature search.
Section 12 - ECOLOGICAL INFORMATION
Fish LC50 (96hr.) (mg/l): 138
The principal problems of phosphate contamination of the environment relates to
eutrophication processes in lakes and ponds. Phosphorus is an essential plant nutrient
and is usually the limiting nutrient for blue-green algae. A lake undergoing
eutrophication shows a rapid growth of algae in surface waters. Planktonic algae cause
turbidity and flotation films. Shore algae cause ugly muddying, films and damage to
reeds. Decay of these algae causes oxygen depletion in the deep water and shallow water
near the shore. The process is self-perpetuating because anoxic conditions at the
sediment/water interface causes the release of more adsorbed phosphates from the
sediment. The growth of algae produces undesirable effects on the treatment of water for
drinking purposes, on fisheries, and on the use of lakes for recreational purposes.
On the basis of available evidence concerning either toxicity, persistence, potential to
accumulate and or observed environmental fate and behaviour, the material may present a
danger, immediate or long-term and /or delayed, to the structure and/ or functioning of
natural ecosystems.
Prevent, by any means available, spillage from entering drains or water
courses.
Do NOT allow product to come in contact with surface waters or to intertidal areas below
the mean high water mark. Do not contaminate water when cleaning equipment or disposing
of equipment wash-waters.
Wastes resulting from use of the product must be disposed of on site or at approved waste
sites.
DO NOT discharge into sewer or waterways.
PHOSPHORIC ACID
Chemwatch Material Safety Data Sheet
Issue Date: 21-Jun-2007 CHEMWATCH 1805
NC317TCP Version No:6
CD 2007/3 Page 14 of 15
Section 13 - DISPOSAL CONSIDERATIONS
路 Recycle wherever possible.
路 Consult manufacturer for recycling options or consult local or regional waste
management authority for disposal if no suitable treatment or disposal facility can be
identified.
路 Treat and neutralise at an approved treatment plant. Treatment should involve:
Neutralisation with soda-ash or soda-lime followed by: Burial in a licenced land-fill or
Incineration in a licenced apparatus (after admixture with suitable combustible
material).
路 Decontaminate empty containers with 5% aqueous sodium hydroxide or soda ash, followed
by water. Observe all label safeguards until containers are cleaned and destroyed.
路 Containers may still present a chemical hazard/ danger when empty.
路 Return to supplier for reuse/ recycling if possible.
Otherwise:
路 If container can not be cleaned sufficiently well to ensure that residuals do not
remain or if the container cannot be used to store the same product, then puncture
containers, to prevent re-use, and bury at an authorised landfill.
路 Where possible retain label warnings and MSDS and observe all notices pertaining to the
product.
Section 14 - TRANSPORTATION INFORMATION
Labels Required: CORROSIVE
HAZCHEM: 2R
UNDG:
Dangerous Goods Class: 8 Subrisk: None
UN Number: 1805 Packing Group: III
Shipping Name:PHOSPHORIC ACID, SOLUTION
Air Transport IATA:
ICAO/IATA Class: 8 ICAO/IATA Subrisk: None
UN/ID Number: 1805 Packing Group: III
Special provisions: A3
Shipping Name: PHOSPHORIC ACID, SOLUTION
Maritime Transport IMDG:
IMDG Class: 8 IMDG Subrisk: None
UN Number: 1805 Packing Group: III
EMS Number: F- A, S- B Special provisions: 223
Shipping Name: PHOSPHORIC ACID SOLUTION
Section 15 - REGULATORY INFORMATION
POISONS SCHEDULE: S6 NZS3
REGULATIONS
phosphoric acid (CAS: 7664-38-2) is found on the following regulatory lists;
PHOSPHORIC ACID
Chemwatch Material Safety Data Sheet
Issue Date: 21-Jun-2007 CHEMWATCH 1805
NC317TCP Version No:6
CD 2007/3 Page 15 of 15
Section 15 - REGULATORY INFORMATION
Australia Exposure Standards
Australia High Volume Industrial Chemical List (HVICL)
Australia Inventory of Chemical Substances (AICS)
Australia National Pollutant Inventory
Australia Standard for the Uniform Scheduling of Drugs and Poisons (SUSDP) - Appendix E (Part 2)
Australia Standard for the Uniform Scheduling of Drugs and Poisons (SUSDP) - Appendix F (Part 3)
Australia Standard for the Uniform Scheduling of Drugs and Poisons (SUSDP) - Schedule 5
Australia Standard for the Uniform Scheduling of Drugs and Poisons (SUSDP) - Schedule 6
IMO MARPOL 73/78 (Annex II) - List of Noxious Liquid Substances Carried in Bulk
International Council of Chemical Associations (ICCA) - High Production Volume List
OECD Representative List of High Production Volume (HPV) Chemicals
Section 16 - OTHER INFORMATION
MSDS SECTION CHANGES
The following table displays the version number of and date on which each section was last changed.
Section Name Version Date Section Name Version Date Section Name Version Date
Ingredients 5 30- Jan- 2007 Storage (storage 4 16- Aug- 2006 Acute Health (eye) 4 16- Aug- 2006
requirement)
First Aid 4 16- Aug- 2006 Storage (suitable 4 16- Aug- 2006 Acute Health 4 16- Aug- 2006
(inhaled) container) (inhaled)
First Aid 4 16- Aug- 2006 Engineering 4 16- Aug- 2006 Acute Health 4 16- Aug- 2006
(swallowed) Control (skin)
Fire Fighter (fire 4 16- Aug- 2006 Personal 4 16- Aug- 2006 Acute Health 4 16- Aug- 2006
incompatibility) Protection (eye) (swallowed)
Fire Fighter 4 16- Aug- 2006 Personal 4 16- Aug- 2006 Chronic Health 4 16- Aug- 2006
(fire/explosion Protection
hazard) (hands/feet)
Spills (major) 4 16- Aug- 2006 Appearance 6 21- Jun- 2007 Toxicity and 4 16- Aug- 2006
Irritation (Other)
Spills (minor) 4 16- Aug- 2006 Physical 4 16- Aug- 2006 Environmental 5 30- Jan- 2007
Properties
Handling Procedure 4 16- Aug- 2006 Instability 4 16- Aug- 2006 Disposal 4 16- Aug- 2006
Condition
Storage (storage 4 16- Aug- 2006
incompatibility)
Classification of the preparation and its individual components has drawn on official and
authoritative sources as well as independent review by the Chemwatch Classification
committee using available literature references.
This document is copyright. Apart from any fair dealing for the purposes of private study, research, review or
criticism, as permitted under the Copyright Act, no part may be reproduced by any process without written permission
from CHEMWATCH. TEL (+61 3) 9572 4700.
Issue Date: 21-Jun-2007
Print Date: 2-Jan-2008
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