Ammonium thiosulfate

Ammonium thiosulfate
Names
IUPAC name
Diammonium thiosulfate
Other names
Ammonium thiosulphate, ATS
Identifiers
3D model (JSmol)
ChEBI
ChemSpider
ECHA InfoCard 100.029.074 Edit this at Wikidata
UNII
  • InChI=1S/2H3N.H2O3S2/c;;1-5(2,3)4/h2*1H3;(H2,1,2,3,4) checkY
    Key: XYXNTHIYBIDHGM-UHFFFAOYSA-N checkY
  • InChI=1S/2H3N.H2O3S2/c;;1-5(2,3)4/h2*1H3;(H2,1,2,3,4)
  • [O-]S([O-])(=O)=S.[NH4+].[NH4+]
Properties
[NH4]2S2O3
Molar mass 148.20 g·mol−1
Appearance colorless or white, hygroscopic solid
Density 1.679 g/cm3
Melting point decomposes at 100 °C
173 g/100 mL (20 °C)
Solubility slightly soluble in acetone
insoluble in alcohol
Structure
monoclinic
Hazards
Lethal dose or concentration (LD, LC):
2980 mg/kg (rat, oral)
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Ammonium thiosulfate (ammonium thiosulphate in British English) is an inorganic compound with the formula [NH4]2S2O3. It is white crystalline solid with ammonia odor, readily soluble in water, slightly soluble in acetone and insoluble in ethanol and diethyl ether.[1]