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]

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