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Гидросульфит Натрия

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Molecular Formula:Na2S2O4

Molecular Weight:174.09

CAS No:144-62-7

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
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