International Chemical Safety Cards (WHO/IPCS/ILO)International Chemical 
      Safety Cards 
            TETRASODIUM PYROPHOSPHATE ICSC: 1140 
            TETRASODIUM PYROPHOSPHATE
            Sodium pyrophosphate
            Pyrophosphoric acid, tetrasodium salt
            Na4O7P2
            Molecular mass: 266

            CAS # 7722-88-5
            RTECS # UX7350000
            ICSC # 1140


            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). 



            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 © IPCS CEC 1993 


      International Chemical Safety Cards 
            TETRASODIUM PYROPHOSPHATE ICSC: 1140 

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                  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 (OELs):
                  TLV: ppm; 5 mg/m3 (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. 

                  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 
                  © IPCS, CEC, 1993 


            IMPORTANT LEGAL NOTICE: Neither the CEC or 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. 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.