PHOSPHOROUS ACID
Chemwatch Material Safety Data Sheet (REVIEW)
Issue Date: 12-May-2005 CHEMWATCH 24973
NC317TCP Version No:2.0
CD 2007/3 Page 1 of 11
Section 1 - CHEMICAL PRODUCT AND COMPANY IDENTIFICATION
PRODUCT NAME
PHOSPHOROUS ACID
SYNONYMS
H3-P-O3, H3-P-O3
PROPER SHIPPING NAME
PHOSPHOROUS ACID
PRODUCT USE
Reagent chemical; preparation of inorganic phosphites, organic phosphonates
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,
and the ADG Code.
PHOSPHOROUS ACID
Chemwatch Material Safety Data Sheet (REVIEW)
Issue Date: 12-May-2005 CHEMWATCH 24973
NC317TCP Version No:2.0
CD 2007/3 Page 2 of 11
Section 2 - HAZARDS IDENTIFICATION
POISONS SCHEDULE
S5
RISK SAFETY
Harmful if swallowed. Keep locked up.
Causes severe burns. Do not breathe dust.
Risk of serious damage to eyes. Avoid contact with eyes.
Wear suitable protective clothing.
To clean the floor and all objects contaminated
by this material use water and detergent.
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).
This material and its container must be disposed
of as hazardous waste.
Section 3 - COMPOSITION / INFORMATION ON INGREDIENTS
NAME CAS RN %
phosphorous acid 10294-56-1 >97.5
Section 4 - FIRST AID MEASURES
SWALLOWED
For advice, contact a Poisons Information Centre or a doctor.
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;
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.
PHOSPHOROUS ACID
Chemwatch Material Safety Data Sheet (REVIEW)
Issue Date: 12-May-2005 CHEMWATCH 24973
NC317TCP Version No:2.0
CD 2007/3 Page 3 of 11
Section 4 - FIRST AID MEASURES
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.
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
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.
PHOSPHOROUS ACID
Chemwatch Material Safety Data Sheet (REVIEW)
Issue Date: 12-May-2005 CHEMWATCH 24973
NC317TCP Version No:2.0
CD 2007/3 Page 4 of 11
Section 5 - FIRE FIGHTING MEASURES
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
Non combustible.
Not considered to be a significant fire risk.
Heating may cause expansion or decomposition leading to violent rupture of containers.
Flammable hydrogen gas may be formed on contact with metals.
Decomposes on heating and produces toxic fumes of phosphorus oxides (POx).
FIRE INCOMPATIBILITY
Reacts with mild steel, galvanised steel / zinc producing hydrogen gas which may form an
explosive mixture with air.
Segregate from alkalies, oxidising agents and chemicals readily decomposed by acids, i.e.
cyanides, sulfides, carbonates.
HAZCHEM: 2R
Section 6 - ACCIDENTAL RELEASE MEASURES
EMERGENCY PROCEDURES
MINOR SPILLS
Clean up all spills immediately. and Avoid contact with skin and eyes.
Wear protective neoprene gloves and chemical goggles.
Use soda ash or slaked lime to neutralise.
Wipe up and absorb small quantities with vermiculite or other absorbent material.
Place in suitable containers for disposal.
Wash spill area with large quantities of water.
MAJOR SPILLS
DO NOT touch the spill material. Restrict access to area.
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.
PHOSPHOROUS ACID
Chemwatch Material Safety Data Sheet (REVIEW)
Issue Date: 12-May-2005 CHEMWATCH 24973
NC317TCP Version No:2.0
CD 2007/3 Page 5 of 11
Section 6 - ACCIDENTAL RELEASE MEASURES
PROTECTIVE ACTIONS FOR SPILL
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.
Personal Protective Equipment advice is contained in Section 8 of the MSDS.
Section 7 - HANDLING AND STORAGE
PROCEDURE FOR HANDLING
路 Avoid all personal contact, including inhalation.
路 Wear protective clothing when risk of exposure occurs.
路 Use in a well-ventilated area.
路 WARNING: To avoid violent reaction, ALWAYS add material to water and NEVER water to
material.
路 Avoid smoking, naked lights or ignition sources.
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.
PHOSPHOROUS ACID
Chemwatch Material Safety Data Sheet (REVIEW)
Issue Date: 12-May-2005 CHEMWATCH 24973
NC317TCP Version No:2.0
CD 2007/3 Page 6 of 11
Section 7 - HANDLING AND STORAGE
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
Glass container. Plastic carboy or Polyethylene or polypropylene container.
Polylined drum.
路 Check that containers are clearly labelled.
Packaging as recommended by manufacturer.
STORAGE INCOMPATIBILITY
Reacts vigorously with alkalis.
Segregate from alkalies, oxidising agents and chemicals readily decomposed by acids, i.e.
cyanides, sulfides, carbonates.
Reacts with mild steel and zinc to produce hydrogen (H2).
o-phosphorous acid in contact with acetic acid releases flammable
phosphine.
STORAGE REQUIREMENTS
Store in a bunded area.
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
_________ _________ _____
Australia Exposure Standards phosphorous acid (Inspirable 10
dust (Not specified))
MATERIAL DATA
No exposure limits set by NOHSC or ACGIH.
PERSONAL PROTECTION
PHOSPHOROUS ACID
Chemwatch Material Safety Data Sheet (REVIEW)
Issue Date: 12-May-2005 CHEMWATCH 24973
NC317TCP Version No:2.0
CD 2007/3 Page 7 of 11
Section 8 - EXPOSURE CONTROLS / PERSONAL PROTECTION
EYE
路 Safety glasses with side shields.
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
路 Barrier cream. and Rubber Gloves or Neoprene rubber gloves or PVC gloves.
Safety footwear. or Rubber boots.
DO NOT allow clothing wet with material to stay in contact with skin.
#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.
RESPIRATOR
Protection Factor Half- Face Respirator Full- Face Respirator Powered Air Respirator
10 x ES B P1 Air- line* -- B PAPR- P1 -
50 x ES Air- line** B P2 B PAPR- P2
100 x ES - B P3 -
Air- line* -
100+ x ES - Air- line** B PAPR- P3
* - Negative pressure demand ** - Continuous flow.
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
Use in a well-ventilated area.
General exhaust is adequate under normal operating conditions. Local exhaust ventilation
may be required in special circumstances. If risk of overexposure exists, wear approved
respirator. Supplied-air type respirator may be required in special circumstances.
Correct fit is essential to ensure adequate protection. Provide adequate ventilation in
PHOSPHOROUS ACID
Chemwatch Material Safety Data Sheet (REVIEW)
Issue Date: 12-May-2005 CHEMWATCH 24973
NC317TCP Version No:2.0
CD 2007/3 Page 8 of 11
Section 8 - EXPOSURE CONTROLS / PERSONAL PROTECTION
warehouses and enclosed storage areas. 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
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
White to yellow flakes or crystals when pure. Hygroscopic. No odour. When dissolved or
reacted with water evolves heat.
PHYSICAL PROPERTIES
Solid.
Does not mix with water.
Sinks in water.
Corrosive.
Molecular Weight: 82.00 Boiling Range (掳C): 200
PHOSPHOROUS ACID
Chemwatch Material Safety Data Sheet (REVIEW)
Issue Date: 12-May-2005 CHEMWATCH 24973
NC317TCP Version No:2.0
CD 2007/3 Page 9 of 11
Section 9 - PHYSICAL AND CHEMICAL PROPERTIES
Melting Range (掳C): 74 Specific Gravity (water=1): 1.7
Solubility in water (g/L): Partly miscible pH (as supplied): Acidic
pH (1% solution): Acidic Vapour Pressure (kPa): Not applicable
Volatile Component (%vol): Not applicable Evaporation Rate: Not applicable
Relative Vapour Density (air=1): Not applicable Flash Point (掳C): None
Lower Explosive Limit (%): Not applicable Upper Explosive Limit (%): Not applicable
Autoignition Temp (掳C): Not available Decomposition Temp (掳C): Not available
State: Divided solid
Section 10 - CHEMICAL STABILITY AND REACTIVITY INFORMATION
CONDITIONS CONTRIBUTING TO INSTABILITY
路 Presence of incompatible materials.
路 Product is considered stable.
路 Hazardous polymerisation will not occur.
Section 11 - TOXICOLOGICAL INFORMATION
POTENTIAL HEALTH EFFECTS
ACUTE HEALTH EFFECTS
SWALLOWED
The material is. highly corrosive if swallowed and is capable of causing burns to mouth,
throat, oesophagus, with extreme
discomfort, pain.
Considered an unlikely route of entry in commercial/industrial environments.
Small amounts or low dose rates are regarded as practically non-harmful.
EYE
The material is. highly corrosive to the eyes and is capable of causing severe damage
with loss of sight.
The material may be irritating to the eye, with prolonged contact causing inflammation.
Repeated or prolonged exposure to irritants may produce conjunctivitis.
SKIN
The material is. highly discomforting to the skin and is capable of causing severe burns
or skin reactions which may lead to dermatitis.
The material may cause 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.
INHALED
Not normally a hazard due to non-volatile nature of product.
The vapour/mist is. highly discomforting to the upper respiratory tract and may cause
breathing difficulty.
The material may produce respiratory tract irritation, and result in damage to the lung
including reduced lung function.
High concentrations cause inflamed airways and watery swelling
of the lungs with oedema.
CHRONIC HEALTH EFFECTS
Principal routes of exposure are by accidental skin and eye contact and by inhalation of
vapours especially at higher temperatures.
No human exposure data available. For this reason health effects described are based on
experience with chemically related materials.
As with any chemical product, contact with unprotected bare skin; inhalation of vapour,
PHOSPHOROUS ACID
Chemwatch Material Safety Data Sheet (REVIEW)
Issue Date: 12-May-2005 CHEMWATCH 24973
NC317TCP Version No:2.0
CD 2007/3 Page 10 of 11
Section 11 - TOXICOLOGICAL INFORMATION
mist or dust in work place atmosphere; or ingestion in any form, should be avoided by
observing good occupational work practice.
TOXICITY AND IRRITATION
No data of toxicological significance identified in literature search.
Section 12 - ECOLOGICAL INFORMATION
No data for phosphorous acid.
Section 13 - DISPOSAL CONSIDERATIONS
路 Recycle wherever possible or consult manufacturer for recycling options.
路 Consult State Land Waste Management Authority for disposal.
路 Treat and neutralise with slaked lime at an effluent treatment plant.
路 Recycle containers, otherwise dispose of in an authorised landfill.
Section 14 - TRANSPORTATION INFORMATION
Labels Required: CORROSIVE
HAZCHEM: 2R
UNDG:
Dangerous Goods Class: 8 Subrisk: None
UN Number: 2834 Packing Group: III
Shipping Name:PHOSPHOROUS ACID
Air Transport IATA:
ICAO/IATA Class: 8 ICAO/IATA Subrisk: None
UN/ID Number: 2834 Packing Group: III
Special provisions: None
Shipping Name: PHOSPHOROUS ACID
Maritime Transport IMDG:
IMDG Class: 8 IMDG Subrisk: None
UN Number: 2834 Packing Group: III
EMS Number: F- A, S- B Special provisions: None
Shipping Name: PHOSPHOROUS ACID
Section 15 - REGULATORY INFORMATION
POISONS SCHEDULE: S5
REGULATIONS
phosphorous acid (CAS: 10294-56-1) is found on the following regulatory lists;
Australia Exposure Standards
PHOSPHOROUS ACID
Chemwatch Material Safety Data Sheet (REVIEW)
Issue Date: 12-May-2005 CHEMWATCH 24973
NC317TCP Version No:2.0
CD 2007/3 Page 11 of 11
Section 15 - REGULATORY INFORMATION
Australia Illicit Drug Precursors/Reagents - Category I
Australia Inventory of Chemical Substances (AICS)
Section 16 - OTHER INFORMATION
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: 12-May-2005
Print Date: 2-Jan-2008
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