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SODIUM METABISULPHITE IP
Sodium pyrosulphite; Sodium Disulphite
NEW
MSDS
COAs
Packings
1000 g
(01000)
5000 g
(05000)
25 Kg
(0025K)
Print friendly version
Article No.
IS007
Grade
Purity
CAS No.
7681-57-4
Molecular Formula
Na
2
S
2
O
5
Molecular Weight
190.10
H.S. Code
2832.1090
Shelf Life
Specifications
Description
Colourless, prismatic crystals or a white or creamy white powder.
Identification
-
Identification 'A'
A 5% solution in carbon dioxide free water gives reaction of sodium salts
Identification 'B'
The solution is colourless and gives reaction of sulphates
pH
3.5 to 5.0
Arsenic
NMT 4 ppm
Heavy metals
NMT 20 ppm
Iron
NMT 40 ppm
Thiosulphate
Not more than a faint opalescence should produced
Assay
NLT 95.0% and NMT 100.5% of Na2S2O5
Safety Information and Hazard Symbols
Symbol: GHS05, GHS07
Signal Word: Danger
Hazardous Statement: H302-H318
Precaution Statement: P280-P305 + P351 + P338
Revision Date:
10-May-2025
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SODIUM METABISULPHITE IP