CAS 7772-98-7 Sodium Thiosulphate

Product Name:Sodium Thiosulphate
Other Name: Sodium hyposulfite
Appearance:colorless and transparent crystal
Granular Mesh Size:8-10mm,5-8mm,1-3mm,3-5mm
CAS No.: 7772-98-7
HS Code:2830909000
MOQ:1*20'FCL
Package: 25kg, 50kg plastic woven bag, or following your demand.

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Description of Sodium Thiosulphate:

Sodium thiosulfate, also known as sodium hyposulfite, big soda, and Haibo, is a common thiosulfate with the chemical formula Na2S2O3, which is colorless, transparent crystal or crystalline fine particles; odorless, salty.

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Specification of Sodium Thiosulphate :

Item	Photographic grade	Industrial grade	Anhydrous grade
Appearance	colorless transparent crystal	colorless transparent crystal	white powder
Assay	≥99.00%	≥98.5%	≥97.0%
Water Insoluble matter	≤0.01%	≤0.03%	≤0.03%
Sulfide	≤0.001%	≤0.003%	≤0.001%
Fe	≤0.001%	≤0.003%	≤0.005%
PH	6.5~9.5	6.5~9.5	6.5~9.5
Water solution reaction	in accordance with the test	in accordance with the test	----
Granularity(g/g)	12~16	---	----

Application of Sodium Thiosulphate:

1. Mainly used as fixer in photographic industry. Secondly, it is used as a reducing agent for dichromate when tanning leather, a neutralizing agent for nitrogen-containing tail gas, a mordant, a bleaching agent for wheat straw and wool, and a dechlorinating agent for pulp bleaching. It is also used in the manufacture of tetraethyl lead, dye intermediates, etc. and the extraction of silver from ore.

2. Detoxification, Sodium thiosulfate (sodium hyposulfite, soda, hypo) is an antidote for cyanide.

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