Sodium thiosulfate anhydrous 7772-98-7


Product Deail


Sodium thiosulfate anhydrous

Another name】Sodium hyposulfite、sodium bicarbonate of soda、disodium thiosulfate、sea wave.

Description】Colorless crystal or white powder, deliquescent in moist air, insoluble in alcohol, soluble in water.

Test items

High purity

Other

Assay(Na2O3S2) /%

≥97.0

Custom

Mesh number

20-100

Insoluble matter /%

≥0.4

Heavy metals(as Pb) /%

≤0.002

Iron (as Fe) /%

≤0.005

Free base(as NaOH) /%

≤0.06

Acidity (as H2SO4) /%

≤0.01

Sulfide /%

≤0.000 6

pH

6.5-9.5

Appearance of solution

Transparent without soluble matter(except for trace floc)

Use】Photography as fixing agent;As a reducing agent of dichromate in tanning;The neutralizer containing nitrogen tail gas;Mordants;Bleaching agent for straw and wool;Dechlorination agent for pulp bleaching;Dye intermediates;Ore about silver.