Characteristic:
Physical appearance
Assay as NaHSO3
Assay as SO2%
Ph of 10% solution
Iron (Fe)
Chloride
Heavy metals (as Pb)
Specification:
Water insoluble
Off white crystalline Powder
91.5% min
60-62% min.
4 to 5.50
150 PPM.
600 PPM max
50 PPM max
0.05 % max
Application:
Leather treatment, photograph, specialty chemicals
Dye & intermediates, effluent treatment , metal cleaning chemical, food preservatives, pharmaceutical industry, laboratory chemicals, textile industry. Oil field chemicals, paper mills, photography, agro industry.