SODIUM ACID PYROPHOSPHATE
Chemwatch Material Safety Data Sheet
Issue Date: 10-Aug-2005 CHEMWATCH 16272
NC317TCP Version No:3
CD 2007/3 Page 1 of 9
Section 1 - CHEMICAL PRODUCT AND COMPANY IDENTIFICATION
PRODUCT NAME
SODIUM ACID PYROPHOSPHATE
SYNONYMS
H2-O7-P2-Na2, Na2-H2-P2-O7, "pyrophosphoric acid, disodium salt", "diphosphoric acid,
disodium salt", "disodium dihydrogen pyrophosphate", "disodium diphosphate", "disodium
pyrophosphate", "sodium pyrophosphate", "pyrophosphate acid, disodium salt", SAPP-X,
PRODUCT USE
Metal cleaning and phosphatising, electroplating, drilling muds, baking powders and
leavening agent, buffer, sequestrant, peptising agent in cheese and meat products, frozen
desserts.
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
NON-HAZARDOUS SUBSTANCE. NON-DANGEROUS GOODS. According to the Criteria of
NOHSC, and the ADG Code.
SODIUM ACID PYROPHOSPHATE
Chemwatch Material Safety Data Sheet
Issue Date: 10-Aug-2005 CHEMWATCH 16272
NC317TCP Version No:3
CD 2007/3 Page 2 of 9
Section 2 - HAZARDS IDENTIFICATION
POISONS SCHEDULE
None
RISK SAFETY
Toxic to aquatic organisms. Do not breathe dust.
May cause long- term adverse effects in the Take off immediately all contaminated clothing.
environment.
Ingestion may produce health damage*.
Cumulative effects may result following
exposure*.
* (limited evidence).
Section 3 - COMPOSITION / INFORMATION ON INGREDIENTS
NAME CAS RN %
sodium acid pyrophosphate 7758-16-9 > 98
Section 4 - FIRST AID MEASURES
SWALLOWED
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 Seek medical advice.
EYE
If this product comes in contact with the eyes:
路 Wash out immediately with fresh 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 If pain persists or recurs seek medical attention.
路 Removal of contact lenses after an eye injury should only be undertaken by skilled
personnel.
SKIN
If skin contact occurs:
路 Immediately remove all contaminated clothing, including footwear.
路 Flush skin and hair with running water (and soap if available).
路 Seek medical attention in event of irritation.
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
Treat symptomatically.
SODIUM ACID PYROPHOSPHATE
Chemwatch Material Safety Data Sheet
Issue Date: 10-Aug-2005 CHEMWATCH 16272
NC317TCP Version No:3
CD 2007/3 Page 3 of 9
Section 5 - FIRE FIGHTING MEASURES
EXTINGUISHING MEDIA
路 There is no restriction on the type of extinguisher which may be used.
FIRE FIGHTING
路 Alert Fire Brigade and tell them location and nature of hazard.
路 Wear breathing apparatus plus protective gloves for fire only.
路 Prevent, by any means available, spillage from entering drains or water courses.
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, however containers may burn.
路 In a fire may decompose on heating and produce toxic / corrosive fumes.
Decomposes on heating and produces toxic fumes of: phosphorus oxides (POx).
Reacts with metals producing flammable / explosive hydrogen gas.
FIRE INCOMPATIBILITY
None known.
HAZCHEM: None
Section 6 - ACCIDENTAL RELEASE MEASURES
EMERGENCY PROCEDURES
MINOR SPILLS
路 Clean up all spills immediately.
路 Avoid contact with skin and eyes.
路 Wear impervious gloves and safety glasses.
路 Use dry clean up procedures and avoid generating dust.
路 Sweep up or
路 Vacuum up (consider explosion-proof machines designed to be grounded during storage and
use).
路 Place spilled material in clean, dry, sealable, labelled container.
MAJOR SPILLS
路 Clear area of personnel and move upwind.
路 Alert Fire Brigade and tell them location and nature of hazard.
路 Control personal contact by using protective equipment and dust respirator.
路 Prevent spillage from entering drains, sewers or water courses.
路 Avoid generating dust.
路 Sweep, shovel up. Recover product wherever possible.
路 Put residues in labelled plastic bags or other containers for disposal.
路 If contamination of drains or waterways occurs, advise emergency services.
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:
sodium acid pyrophosphate 500 mg/m鲁
SODIUM ACID PYROPHOSPHATE
Chemwatch Material Safety Data Sheet
Issue Date: 10-Aug-2005 CHEMWATCH 16272
NC317TCP Version No:3
CD 2007/3 Page 4 of 9
Section 6 - ACCIDENTAL RELEASE MEASURES
irreversible or other serious effects or symptoms which could impair an individual's ability to take
protective action is:
sodium acid pyrophosphate 50 mg/m鲁
other than mild, transient adverse effects without perceiving a clearly defined odour is:
sodium acid pyrophosphate 30 mg/m鲁
The threshold concentration below which most people will experience no appreciable risk of health effects:
sodium acid pyrophosphate 10 mg/m鲁
American Industrial Hygiene Association (AIHA)
Ingredients considered according to the following cutoffs
Very Toxic (T+) >= 0.1% Toxic (T) >= 3.0%
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
路 Limit all unnecessary personal contact.
路 Wear protective clothing when risk of exposure occurs.
路 Use in a well-ventilated area.
路 When handling DO NOT eat, drink or smoke.
路 Always wash hands with soap and water after handling.
路 Avoid physical damage to containers.
路 Use good occupational work practice.
路 Observe manufacturer's storing and handling recommendations.
SUITABLE CONTAINER
Glass container.
Plastic container.
Multi-ply woven plastic or paper bag with sealed plastic liner
NOTE: Bags should be stacked, blocked, interlocked, and limited in height so that they
are stable and secure against sliding or collapse.
路 Check that containers are clearly labelled.
Packaging as recommended by manufacturer.
STORAGE INCOMPATIBILITY
Avoid reaction with oxidising agents.
Avoid storage with strong alkalis and magnesium.
STORAGE REQUIREMENTS
Store in original containers.
Keep containers securely sealed.
Store in a cool, dry place.
Keep dry.
Store in a well-ventilated area.
Store away from incompatible materials.
Protect containers against physical damage.
Check regularly for spills and leaks.
Observe manufacturer's storing and handling recommendations.
SODIUM ACID PYROPHOSPHATE
Chemwatch Material Safety Data Sheet
Issue Date: 10-Aug-2005 CHEMWATCH 16272
NC317TCP Version No:3
CD 2007/3 Page 5 of 9
Section 7 - HANDLING AND STORAGE
_____________________________________________________
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 sodium acid pyrophosphate 10
(Inspirable dust (Not
specified))
PERSONAL PROTECTION
EYE
路 Safety glasses with side shields; or as required,
路 Chemical goggles.
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
Wear chemical protective gloves, eg. PVC.
Wear safety footwear.
OTHER
路 Overalls.
路 Barrier cream
路 Eyewash unit.
RESPIRATOR
Protection Factor Half- Face Respirator Full- Face Respirator Powered Air Respirator
10 x ES P1 Air- line* -- PAPR- P1 -
SODIUM ACID PYROPHOSPHATE
Chemwatch Material Safety Data Sheet
Issue Date: 10-Aug-2005 CHEMWATCH 16272
NC317TCP Version No:3
CD 2007/3 Page 6 of 9
Section 8 - EXPOSURE CONTROLS / PERSONAL PROTECTION
50 x ES Air- line** P2 PAPR- P2
100 x ES - P3 -
Air- line* -
100+ x ES - Air- line** 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
路 Local exhaust ventilation is required where solids are handled as powders or crystals;
even when particulates are relatively large, a certain proportion will be powdered by
mutual friction.
路 Exhaust ventilation should be designed to prevent accumulation and recirculation of
particulates in the workplace.
路 If in spite of local exhaust an adverse concentration of the substance in air could
occur, respiratory protection should be considered. Such protection might consist of:
(a): particle dust respirators, if necessary, combined with an absorption cartridge;
(b): filter respirators with absorption cartridge or canister of the right type;
(c): fresh-air hoods or masks
路 Build-up of electrostatic charge on the dust particle, may be prevented by bonding and
grounding.
路 Powder handling equipment such as dust collectors, dryers and mills may require
additional protection measures such as explosion venting.
Air contaminants generated in the workplace possess varying "escape" velocities which, in
turn, determine the "capture velocities" of fresh circulating air required to efficiently
remove the contaminant.
Type of Contaminant: Air Speed:
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
SODIUM ACID PYROPHOSPHATE
Chemwatch Material Safety Data Sheet
Issue Date: 10-Aug-2005 CHEMWATCH 16272
NC317TCP Version No:3
CD 2007/3 Page 7 of 9
Section 8 - EXPOSURE CONTROLS / PERSONAL PROTECTION
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 4-10
m/s (800-2000 f/min) for extraction of crusher dusts generated 2 metres 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
Odourless white crystalline powder. Soluble in water (12.5%). Insoluble in alcohol and
ammonia.
PHYSICAL PROPERTIES
Solid.
Mixes with water.
Molecular Weight: 221.94 Boiling Range (掳C): Not applicable.
Melting Range (掳C): 232 (Decomposes) Specific Gravity (water=1): 1.86
Solubility in water (g/L): Miscible pH (as supplied): Not applicable
pH (1% solution): 4.2 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): Not applicable
Lower Explosive Limit (%): Not applicable Upper Explosive Limit (%): Not applicable
Autoignition Temp (掳C): Not applicable Decomposition Temp (掳C): Not available.
State: Divided solid Viscosity: Not available
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 may be. discomforting to the gastro-intestinal tract if swallowed.
Use in food, and as food additive indicates high degree of tolerance.
Ingestion may result in nausea, abdominal irritation, pain and vomiting if swallowed in
large quantity.
Considered an unlikely route of entry in commercial/industrial environments.
As absorption of phosphates from the bowel is poor, poisoning this way is less likely.
Effects can include vomiting, tiredness, fever, diarrhoea, low blood pressure, slow pulse
, cyanosis, spasms of the wrist, coma and severe body spasms.
EYE
The dust is. discomforting to the eyes and is capable of causing burns.
SODIUM ACID PYROPHOSPHATE
Chemwatch Material Safety Data Sheet
Issue Date: 10-Aug-2005 CHEMWATCH 16272
NC317TCP Version No:3
CD 2007/3 Page 8 of 9
Section 11 - TOXICOLOGICAL INFORMATION
SKIN
The dust may be discomforting to the skin and is capable of causing skin reactions which
may lead to dermatitis.
Open cuts, abraded or irritated skin should not be exposed to this material.
The material may accentuate any pre-existing skin condition.
INHALED
The dust may be discomforting to the upper respiratory tract.
CHRONIC HEALTH EFFECTS
Principal routes of exposure are by accidental skin and eye contact and inhalation of
generated dusts.
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
Oral (rat) LD50: 3600 mg/kg Skin (rabbit): 0.0/8.0
Dermal (rabbit) LD50: >7940 mg/kg practically
non- irritating
Eye (rabbit): 16.0/110.0
moderately irritating
[CCOHS, Trade Names]
Section 12 - ECOLOGICAL INFORMATION
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.
Section 13 - DISPOSAL CONSIDERATIONS
路 Recycle wherever possible or consult manufacturer for recycling options.
路 Consult State Land Waste Management Authority for disposal.
路 Bury residue in an authorised landfill.
路 Recycle containers if possible, or dispose of in an authorised landfill.
Section 14 - TRANSPORTATION INFORMATION
HAZCHEM: None
NOT REGULATED FOR TRANSPORT OF DANGEROUS GOODS:UN, IATA,
IMDG
SODIUM ACID PYROPHOSPHATE
Chemwatch Material Safety Data Sheet
Issue Date: 10-Aug-2005 CHEMWATCH 16272
NC317TCP Version No:3
CD 2007/3 Page 9 of 9
Section 15 - REGULATORY INFORMATION
POISONS SCHEDULE: None
REGULATIONS
sodium acid pyrophosphate (CAS: 7758-16-9) is found on the following regulatory lists;
Australia Exposure Standards
Australia Inventory of Chemical Substances (AICS)
OECD Representative List of High Production Volume (HPV) Chemicals
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: 10-Aug-2005
Print Date: 10-Jan-2008
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