International Chemical Safety Cards

TETRASODIUM PYROPHOSPHATE ICSC: 1140

Sodium pyrophosphate
Pyrophosphoric acid, tetrasodium salt
Na4O7P2
Molecular mass: 266
ICSC #    1140
CAS #     7722-88-5
RTECS # UX7350000
April 08, 1997 Peer reviewed
TYPES OF HAZARD/ EXPOSURE ACUTE HAZARDS/ SYMPTOMS PREVENTION FIRST AID/
FIRE FIGHTING
FIRE Not combustible. Gives off irritating or toxic fumes (or gases) in a fire.

In case of fire in the surroundings: all extinguishing agents allowed.
EXPLOSION


EXPOSURE
PREVENT DISPERSION OF DUST!

 •INHALATION Cough. Sore throat.
Ventilation (not if powder).
Fresh air, rest. Refer for medical attention.
 •SKIN Redness.
Protective gloves.
Remove contaminated clothes. Rinse and then wash skin with water and soap.
 •EYES Redness. Pain.
Safety spectacles.
First rinse with plenty of water for several minutes (remove contact lenses if easily possible), then take to a doctor.
 •INGESTION Nausea. Vomiting. Diarrhoea.
Do not eat, drink, or smoke during work.
Rinse mouth. Refer for medical attention.
SPILLAGE DISPOSAL STORAGE PACKAGING & LABELLING
Sweep spilled substance into containers; if appropriate, moisten first to prevent dusting. Wash away remainder with plenty of water. (Extra personal protection: P1 filter respirator for inert particles).


R:
S:
SEE IMPORTANT INFORMATION ON BACK
ICSC: 1140 Prepared in the context of cooperation between the International Programme on Chemical Safety & the Commission of the European Communities (C) IPCS CEC 1994. No modifications to the International version have been made except to add the OSHA PELs, NIOSH RELs and NIOSH IDLH values.

International Chemical Safety Cards

TETRASODIUM PYROPHOSPHATE ICSC: 1140
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P

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A
PHYSICAL STATE; APPEARANCE:
 ODOURLESS COLOURLESS OR WHITE CRYSTALS, OR POWDER.

PHYSICAL DANGERS:

CHEMICAL DANGERS:
 The substance decomposes on burning. The solution in water is a weak base.

OCCUPATIONAL EXPOSURE LIMITS:
 TLV: 5 mg/m3 (ACGIH 1996).
OSHA PEL: none
NIOSH REL: TWA 5 mg/m3
NIOSH IDLH: No data


 ROUTES OF EXPOSURE:
 The substance can be absorbed into the body by inhalation of dust and by ingestion.

INHALATION RISK:
 Evaporation at 20°C is negligible; a harmful concentration of airborne particles can, however, be reached quickly if powdered.

EFFECTS OF SHORT-TERM EXPOSURE:
 The substance irritates the eyes, the skin and the respiratory tract.

EFFECTS OF LONG-TERM OR REPEATED EXPOSURE:
PHYSICAL
PROPERTIES
Melting point: (see Notes) 988°C
 Relative density (water = 1): 2.5
ENVIRONMENTAL
DATA

N O T E S
Other melting points: 880°C (powder).
ADDITIONAL INFORMATION


ICSC: 1140 TETRASODIUM PYROPHOSPHATE
(C) IPCS, CEC, 1994
IMPORTANT LEGAL NOTICE: Neither NIOSH, the CEC or the IPCS nor any person acting on behalf of NIOSH, the CEC or the IPCS is responsible for the use which might be made of this information. This card contains the collective views of the IPCS Peer Review Committee and may not reflect in all cases all the detailed requirements included in national legislation on the subject. The user should verify compliance of the cards with the relevant legislation in the country of use. The only modifications made to produce the U.S. version is inclusion of the OSHA PELs, NIOSH RELs and NIOSH IDLH values.