Product Details

Product Description

molecular formula: Na₂S₂O₃·5H₂O

CAS: 10102-17-7

Appearance:

White crystal powder

Properties:

Single crystal is inclined white crytallized powder, a proportion of 1.667, soluble in water, alcohol, insoluble in air heating oxidation is decomposed into sodium and sulfur dioxide. In pure oxygen in combustion is generating sodium, method and sulfur.

Use:

Mainly used for photographic industry as fuser agent. Tanning when potessium dichromate salt reductants and nitrogen exhaust neutralizers, salt, wheat stem and hair bleach and pulp bleaching agent of the emergence of chlorine when. Also used in tetraethyl lead, dye intermediates such as manufacturing and ore mention silver etc.

Details:

Test item	Specification
Test item	Reagent grade	Pharmaceutical grade
Appearance	Conform	Conform
Assay /%	≥99.0	≥98.5
Clarify degrees test	Conform	Conform
Water insoluble/%	≤0.005	≤0.01
Chloride (Cl)/%	≤0.02	-
Sulphate and sulphite (As SO₄)/%	≤0.05	≤0.1
Sulfide (S)/%	≤0.00025	≤0.0005
N/%	≤0.005	-
Magnesium (Mg) /%	≤0.001	-
Calcium (Ca) /%	≤0.003	≤0.05
Ferric (Fe)/%	≤0.0005	≤0.001
Heavy metal (Pb)/%	≤0.0005	≤0.001

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