Assay (iodometric) 96.5 - 100 %
Assay (as SO2; iodometric) 65 - 67.4 %
pH (5% solution in water) 3.5 - 5.0
Insoluble in water Max 0.025 %
Chloride (Cl) Max 0.02 %
Thiosulphate (S2O3) Max 0.05 %
Heavy metal (as Pb) Max 0.002 %
Arsenic (As) Max 0.0004 %
Iron (Fe) Max 0.002 %
Appearance White crystalline powder

CAS No.

7681-57-4

Molecular Formula

Na2S2O5

Molecular Weight

190.10

HS Code

2832.1000

Symbol

GHS05, GHS07

Signal Word

Danger

Hazardous Statement

H302-H318

Precaution Statement

P264-P270-P280-P301+P312-P305+P351+P338-P310-P330-P501

Packing

1 KG

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SKU: 319831000 Category: Brand:

Sodium pyrosulfite, Sodium disulfite

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SODIUM METABISULFITE (DISULFITE) LR