CAS 7772-98-7 Sodium Thiosulphate

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

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

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Granularity(g/g)

12~16

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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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Package of Sodium Thiosulphate:

25 KG bag ,  25 MT/20'FCL . 1000kg bag, 20MT/20’FCL

also be packed according to customer's needs.

Store closed containers in a cool, dry, well-ventilated area. Avoid exposure to direct sunlight.

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