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Sodium Hydrosulfite

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Molecular Formula:Na2S2O4

Molecular Weight:174.09

CAS No:144-62-7

Property:White crystalline powder, easily soluble in water, very slightly soluble in alcohol.

Specification:

Index
I------------------- II------------------- III
Sodium Hydrosulphite
90% min. --------- 88% min. --------- 85% min.
Water insoluble
0.1% max. ---------0.1% max. --------- 0.1% max.
Sodium thiosulfate: Na2S2O3
1.2 % max. --------- 0.8% max. --------- 1.2% max.
Sodium metabisulfite: Na2S2O5
5-7 %--------------- 5-7%-------------- 5-7%
Sodium bisulfite: NaHSO3
0.5 max. ----------- 0.5% max.----------- 0.5% max.
Sodium carbonate: Na2CO3
1.5% max. ---------- 1.5% max.---------- 1.5% max.
Sodium formate: HCOONa
0.5 % max.--------- 0.05% max. --------- 0.05% max.
Zn
0.0001 % max. ------ 0.0001% max. ------ 0.0001% max.
Fe
0.005 % max.-------- 0.005% max.-------- 0.002% max.
Physical appearance
White crystalline powder

Packing:

Usage:

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