Agent Name

Tetrasodium pyrophosphate

CAS Number

7722-88-5

Formula

H4-O7-P2.4Na

Major Category

Other Classes

Synonyms

Anhydrous tetrasodium pyrophosphate; Diphosphoric acid, tetrasodium salt; Natrium pyrophosphat [German]; Phosphotex; Pyrophosphoric acid tetrasodium salt; Sodium diphosphate (Na4P2O7); Sodium diphosphate, anhydrous; Sodium phosphate (Na4P2O7); Sodium pyrophosphate (Na4P2O7); Sodium pyrophosphate, tetrabasic; TSPP; Tetranatriumpyrophosphat [German]; Tetrasodium diphosphate; Tetrasodium pyrophosphate; Tetrasodium pyrophosphate, anhydrous; Victor TSPP; [ChemIDplus]

Category

Salts, Basic

Description

Odorless, white powder or granules. [Note: The decahydrate (Na4P2O7+10H2O) is in the form of colorless, transparent crystals.]; [NIOSH]

Sources/Uses

Used as a water softener, detergent, emulsifying agent, metal cleaner, and nutritional supplement; [ACGIH]

Comments

Documentation and TLV withdrawn in 2006 because of insufficient data; [ACGIH] A skin, eye, and respiratory tract irritant; [ICSC]

Exposure Assessment
Explanatory Notes

Adopted Documentation and TLVs were withdrawn in 2006 due to insufficient data. [ACGIH]

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Health Studies

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Processes

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