Agent Name

Calcium thiosulfate

CAS Number

10124-41-1

Formula

O3-S2.Ca

Major Category

Metals

Synonyms

Calcium hyposulfite; Calcium thiosulphate; Calcium thiosulfate (Ca(S2O3)); Tecesal; Thiosulfuric acid (H2S2O3), calcium salt (1:1); Thiosulfuric acid, calcium salt (1:1); [ChemIDplus]

Category

Metals, Inorganic Compounds

Description

(50% solution): Liquid; Soluble in water; [MSDSonline]

Sources/Uses

Used as a fungicide, noncorrosive concrete-set accelerator, and polymerization catalyst; Was used in the treatment of arsphenamine side effects; [HSDB]

Comments

The oral lethal dose for humans of thiosulfate salts is probably 0.5-5 g/kg; Sodium thiosulfate is toxic by ingestion causing gastrointestinal disturbance; [HSDB] May cause irritation; Intraperitoneal LD50 (mouse) = 115 mg/kg; [MSDSonline] See "Ammonium thiosulfate." See "Calcium."

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