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Sodium Formaldehyde Bisulfite
 
CAS No.870-72-4
Einecs No.212-800-9
HS Code2832 10 90
Molecular FormulaCH3NaO4S
Molecular Weight134.09 g/mol
Synonyms
Hydroxy methane sulfonic acid
STANDARD SPECIFICATIONS
TestSpecifications
AppearanceWhite free flowing crystals
Assay as NaHSO<sub>3</sub>.CHOH (on dry basis)Min 98 %
Thiosulphate as Pentahydrate Na<sub>2</sub>S<sub>2</sub>O<sub>3</sub>.5H2OMax 0.05%
MoistureMax 3.0%
pH (10% Soln)7.0 – 7.5
Iron (Fe)Max 100 ppm
Lead (Pb)Max 50 ppm
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