Sodium Bisulfite
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1)M. F.: NaHSO3
2)M. W.: 104.06
3)Grade: Industrial
4)Properties: Clear monoclinic crystal or white crystalline powder; Sulfa dioxide odor; Specific density: 1.48; Dissociate upon heating; Water soluble; Acidic aqueous solution; Slightly soluble in alcohol; Readily oxidized into sodium sulfate in air; Strongly reductive; Form adduct with formaldehyde; Storage: Tightly sealed and avoid light.
5)Standard: IS: 248-1971
6)Applications: In photographic developer, preservative for food, electrobath for electroplating of copper; For bleaching of organic products, chemical synthesis etc.; As reductant; In pesticide etc.
7)Packing: 25/50kg N. W. In knitted bag lined with PVC bag.
purity (in So2 ), %w |
≥65% |
|
pH (5% aqueous solution) |
4.0-4.5 |
|
water insoluble substance, %w |
≤0.02 |
|
iron (in Fe), %w |
≤0.01 |
|
heavy metal (in Pb), %w |
≤0.02 |