Qidong A&P Pharmaceutical Co., Ltd.--Ammonium thiosulfate solution|7783-18-8

启东亚太药业有限公司

Qidong A&P Pharmaceutical Co., Ltd.

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Ammonium thiosulfate solution

CAS No ：7783-18-8
Molecular formula: (NH₄)₂S₂O₃
Molecular weight: 148.20
Physicochemical properties: colorless transparent liquid, insoluble in alcohol and ether, slightly soluble in acetone. When heated to 150 ℃, it will decompose to form ammonium sulfite, sulfur, ammonia, hydrogen sulfide and water. The air is very unstable and stable in ammonia gas.
Usage: As fixing agent in photographic industry,Medical fungicides and analytical reagents
Packing: Ammonium thiosulfate solution can be packed in plastic drums, with a net weight of 250kg per drum.
Specification Standard: Q/320681GAI10-2021

Structural Formula：

Specifications:

Item	Index
Appearance	Colorless transparent liquid
content %	58.0-60.0
Ammonium sulfite ≤%	1.0
Alkalinity %	0.3-1.5
Insoluble matter (precipitation of calcium and magnesium) ≤%	0.2
Heavy metals (in terms of lead) ≤%	0.001
Iron (Fe)≤%	0.00025
Sulfide(S2-)≤%	0.0002
Burning residue ≤%	0.1
Specific gravity（20℃）	1.310-1.335

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