TETRASODIUM PYROPHOSPHATE (ICSC)

TETRASODIUM PYROPHOSPHATE	ICSC: 1140

Date of peer-review: April 1997

Sodium pyrophosphate
Pyrophosphoric acid, tetrasodium salt

CAS #	7722-88-5	Na₄O₇P₂
RTECS #	UX7350000	Molecular mass: 266
UN #
EC #

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

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).

EU Classification
UN Classification

EMERGENCY RESPONSE

STORAGE

IPCS
International
Programme on
Chemical Safety

Prepared in the context of cooperation between the International Programme on Chemical Safety and the Commission of the European Communities © IPCS, CEC 2001

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TETRASODIUM PYROPHOSPHATE

ICSC: 1140

IMPORTANT DATA

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

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

OCCUPATIONAL EXPOSURE LIMITS:
TLV: ppm; 5 mg/m^3 (ACGIH 1996).

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.

PHYSICAL PROPERTIES

Melting point: (see Notes) 988°C
Relative density (water = 1): 2.5

ENVIRONMENTAL DATA

NOTES

Other melting points: 880°C (powder).

ADDITIONAL INFORMATION

LEGAL NOTICE

Neither the CEC nor the IPCS nor any person acting on behalf of the CEC or the IPCS is responsible for the use which might be made of this information

    See Also:
       Toxicological Abbreviations
       TETRASODIUM PYROPHOSPHATE (JECFA Evaluation)