Disodium pyrophosphate
Agent Name
Disodium pyrophosphate
Alternative Name
Sodium acid pyrophosphate
CAS Number
7758-16-9
Formula
H2-O7-P2.2Na
Major Category
Other Uses
Synonyms
Sodium acid pyrophosphate; SAPP; Dinatriumpyrophosphat [German]; Diphosphoric acid, disodium salt; Disodium acid pyrophosphate; Disodium dihydrogen diphosphate; Disodium dihydrogen pyrophosphate; Disodium diphosphate; Pyrophosphoric acid, disodium salt; [ChemIDplus] Sodium pyrophosphate dibasic; [MSDSonline]
Category
Food Additives
Description
White solid; [Merck Index] White odorless powder; [MSDSonline]
Sources/Uses
Used in baking powders and as food acidulant; Hexahydrate: Used in electroplating, metal cleaning and phosphatizing, and drilling muds; [HSDB]
Comments
A skin, eye, and mucous membrane irritant; [SAX] Generally regarded as safe (GRAS) for use in foods; Ingestion of high doses may cause GI irritation; Absorption of sufficient phosphate can induce hyperphosphatemia, hypocalcemia, and/or hypomagnesemia and lead to cardiac arrest; Oral LD50 (mouse) = 2650 mg/kg; Intravenous LD50 (mouse) = 59 mg/kg; [HSDB] An eye and respiratory tract irritant; [MSDSonline]
Biomedical References
Diseases, Processes, and Activities Linked to This Agent
Processes
Industrial Processes with risk of exposure: