Sodium hydrogen sulfite

Cas No.: 7631-90-5

Detailed Introduction

1. Molecular formula:NaHS0₃

2. Molecular weight:104.06

3. Nature:CAS Number: 7631-90-5

Sodium bisulfite appears as a white crystalline powder with a sulfur dioxide odor. Exposure to air results in partial loss of sulfur dioxide and oxidation to sulfate

4. Purpose:

1. Used for bleaching cotton and organic fabrics; As a deoxidizer and bleaching agent, the printing and dyeing industry is used for the cooking of various cotton fabrics, which can prevent the localization of cotton fibers and affect fiber strength, and improve the whiteness of the cooked fabrics

2. Used as a reducing agent in industries such as dyeing, papermaking, leather making, and chemical synthesis, it can prevent the oxidation of semi-finished products during the reaction process

3. Intermediate used in the pharmaceutical industry for the production of metamizole and aminopyrine

4. Edible grade products are used as bleaching agents, preservatives, and antioxidants

5. Used for the treatment of chromium containing wastewater and as an electroplating additive

5. Product Quality:

national standard：HG/T3814-2006
Project Name	Standard value	Actual measurement results
sodium sulphite(SO)w/% ≥	64	65.4
sodium hydrogen sulfite(NoHso3)w/% ≥	99	99.4
Insolublew/% ≤	0.03	0.006
ironw/% ≤	0.004	0.002
Heavy metal(Pb)w/% ≤	0.001	0.0005
Experience	White to slightly yellow crystalline powder

6. Packaging and Storage:

Storage and protection: Closed operation, local ventilation. Prevent dust from being released into the workshop air. Operators must undergo specialized training and strictly adhere to operating procedures. It is recommended that operators wear self-priming filter dust masks, chemical safety goggles, rubber acid and alkali resistant clothing, and rubber acid and alkali resistant gloves. Avoid generating dust. Avoid contact with oxidants, acids, and bases. Equip with emergency response equipment for leaks. Empty containers may contain residual harmful substances

Packaging: Outer polypropylene woven bag, paper plastic composite bag, kraft paper bag, inner polyethylene plastic bag Net weight: 25, 50, 1000 kg/bag or customized according to customer requirements