Ammonium thiosulfate is a chemical substance with molecular formula (NHfour)twoStwoOthreeIt is white crystal at normal temperature and very soluble in water.
Chinese name
Ammonium thiosulfate[3]
Foreign name
Ammonium thiosulfate[3]
chemical formula
(NH4)2S2O3
molecular weight
one hundred and forty-eight point two zero five[3]
CAS login number
7783-18-8[3]
EINECS login number
231-982-0[3]
Water solubility
Extremely soluble in water
Density
1.679 g/cm³[3]
Appearance
White crystal
Application
As fixing agent, reducing agent, electroplating solution, etc
11. Determine the number of atomic structure centers: 0[3]
12. Number of uncertain atomic structure centers: 0[3]
13. Determine the number of chemical bond structural centers: 0[3]
14. Number of indeterminate chemical bond structure centers: 0[3]
15. Number of covalent bond units: 3[2]
Properties and stability
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It decomposes and forms when heated to 150 ℃Ammonium sulfite, sulfur, ammoniahydrogen sulfideAnd water.It is very unstable in air and stable in ammonia.It is almost completely decomposed at 150 ℃, very soluble in water, slightly soluble in acetone, and insoluble in alcohol and ether.If the aqueous solution is stored for a long time, there will be sulfur precipitation, and the concentrated aqueous solution will gradually decompose when the temperature is above 50 ℃.[2]
Storage method
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It shall be stored in a cool and dry warehouse.Protect from moisture.It shall be stored in closed equipment filled with ammonia.[2]
