Ammonium thiosulfate

Ammonium thiosulfate
Names
	IUPAC name Diammonium thiosulfate
	Other names Ammonium thiosulphate, ATS
Identifiers
CAS Number	7783-18-8 ;
3D model (JSmol)	Interactive image;
ChEBI	CHEBI:147402;
ChemSpider	4807475 ;
ECHA InfoCard	100.029.074
PubChem CID	6096946;
UNII	BKH1729645 ;
CompTox Dashboard (EPA)	DTXSID6029703 ;
	InChI InChI=1S/2H3N.H2O3S2/c;;1-5(2,3)4/h21H3;(H2,1,2,3,4) Key: XYXNTHIYBIDHGM-UHFFFAOYSA-N ; InChI=1S/2H3N.H2O3S2/c;;1-5(2,3)4/h21H3;(H2,1,2,3,4);
	SMILES [O-]S([O-])(=O)=S.[NH4+].[NH4+];
Properties
Chemical formula	[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
Solubility in water	173 g/100 mL (20 °C)
Solubility	slightly soluble in acetone ; insoluble in alcohol
Structure
Crystal structure	monoclinic
Hazards
	Lethal dose or concentration (LD, LC):
LD50 (median dose)	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). verify (what is ?) Infobox references

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.