Sodium Bisulfite

Sodium Bisulfite Powder，White crystalline powder. Sulfur dioxide odor, melting point decomposition. Soluble in water, slightly soluble in alcohol, ether. Exposed to the air easily oxidized. Its aqueous solution (1%) has a pH of 4.0 to 5.5. Strong reducibility.

Product Details

The role of sodium bisulfite：

1. For cotton fabrics and organic bleaching;

2. In the dye, paper, leather, chemical synthesis and other industries as a reducing agent;

3. The pharmaceutical industry is used to produce intermediates of amoutone and aminopyrine;

4. Food grade products used as bleach, preservatives, antioxidants;

5. For chromium-containing wastewater treatment, and as a plating additive.

Sodium bisulfite storage matters：

Operational Notes: Closed operation, local exhaust. Prevent the release of dust to the workshop air. Operators must undergo specialized training, strictly abide by the rules. It is recommended that operators wear self-priming filtered respirators, wear chemical safety goggles, wear rubber acid and alkali resistant suits and wear rubber acid-base gloves. Avoid producing dust. Avoid oxidants, acids, alkalis. Equipped with leak emergency treatment equipment. Empty containers may be harmful residues.

Storage Notes: Store in a cool, ventilated warehouse. Keep away from fire and heat. Prevent direct sunlight. Packing sealed. Should be separated with oxidants, acids, alkalis, avoid mixing reservoir. Should not be long-lived, so as not to deteriorate. Storage area should be equipped with suitable materials to contain spills.

Test Item	Standard Request.	Inspect Result	Inspect Conclusion
Appearance	White crystalline powder	Conformed	Pass
Content (NaHSO3) %	≥99%	99.1%	Pass
SO2%	64%-67%	65%	Pass
Cl%	0.05	0.03	Pass
Fe%	≤0.004%	0.002%	Pass
Water Insoluble Matter%	≤0.03%	0.01%	Pass
Heavy metal (Pb)%	≤0.001%	0.0005%	Pass
As%	≤0.0002%	<0.0001%	Pass
PH	4.0-5.0	4.3	Pass