Thiosulfuric acid
- CAS No.
- 13686-28-7
- Chemical Name:
- Thiosulfuric acid
- Synonyms
- Thiosulfuric acid;sulfurothioic O-acid;Thiosulfuric acid (H2S2O3) (9CI)
- CBNumber:
- CB12297177
- Molecular Formula:
- H2O3S2
- Molecular Weight:
- 114.13
- MOL File:
- 13686-28-7.mol
- Modify Date:
- 2023/5/4 17:34:33
Thiosulfuric acid Chemical Properties,Uses,Production
Physical properties
Thiosulfuric acid is a sulfur oxoacid. The free acid
cannot be prepared by acidifying thiosulfate salts
as the acid readily decomposes in water. Anhydrous methods of producing
the acid are:
H2S＋ SO3→H2S2O3·nEt2O (in diethyl ether at 78°C)
Na2S2O3＋2HCl/2NaCl＋H2S2O3·2Et2O
(in diethyl ether at 78°C)
HSO3Cl＋H2S→HCl＋H2S2O3 (low temperature)
The anhydrous acid also decomposes below 0°C:
H2S2O3→H2S＋ SO3
There is another isomeric form, a white crystalline
adduct of hydrogen sulfide and sulfur trioxide, H2S·SO3, which can also be prepared at low temperature.
Thiosulfuric acid Preparation Products And Raw materials
Raw materials
Preparation Products
13686-28-7(Thiosulfuric acid)Related Search:
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Thiosulfuric acid
sulfurothioic O-acid
Thiosulfuric acid (H2S2O3) (9CI)
13686-28-7