Back ProductSodium thiosulfate (baking soda)

  CAS NO.:10102-17-7 Molecular Formula:Na2S2O3ž5H2O Structural Formula: Molecular Weight:248.19 Product standard: Ndustrial grade: HG/T 2328-2006 Photographic grade: HG/T 3023-1989

Potassium sulfite solution

Potassium sulfite solution

CAS No: 10117-38-1

Molecular formula: K2SO3

Molecular weight: 158.26

Physical and chemical properties: colorless transparent, with reducing properties. The solution is weakly alkaline. It is unstable in the air.

Usage: It can be used as a developing agent for the photosensitive industry or as a protective agent for the fixing solution. It is also used as a reducing agent in the printing and dyeing industry, as a bleaching agent for wool and silk.

Packing: 270kg plastic drum

Specification Standard: Q/320681GAI07-2021

Structural Formula:

Product specifications:

Item Index
Appearance Colorless transparent liquid
Content (W/W)% 44.5-46.0
Color (black unit)≤ 40
Heavy metals(Pb)w/w: %≤ 0.002
Iron(Fe) w/w: %≤ 0.001
Sulphate ≤% 0.7
Thiosulfate ≤% 0.006
Insoluble matter (precipitation of calcium and magnesium) ≤% 0.2
Insoluble matter ≤% 0.005
Specific gravity (20℃) 1.436-1.460
Density (20℃) 1.437-1.457
pH(25℃ Stock solution) 9.0-9.5
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Next ProductAnhydrous Sodium Sulfite

 CAS NO.:7757-83-7 Molecular Formula:Na2SO3 Structural Formula: Molecular Weight:126.04 Appearance:White crystal or powder Use:Medicinal excipients, Antioxidants。 Packing:25kg/Drum ...