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Guangzhou Zoron Chemicals Technology Co., Ltd 3yr.
Contacts:Mr Su Chat
Mobile:86-13480239358
E-mail:xinglong3698@sina.com
Sodium sulfite
Molecular formula: Na2S2O2·5H2O
Synonym: Hai Bo, Sodium Pentasulfate, Sodium Metabisulfite.
Appearance:Colorless transparent monoclinic crystal system.
English Name: Sodium thiosulfate
Nature: Easy to dissolve in water, water solution is weakly basic. Has hygroscopic properties.
Quality Standards:
|
Indicator Name |
Standard Value |
Measured Value |
|
Na2S2O3·5H2O % |
≥99 |
99.2 |
|
Water Insoluble Matter % |
≤0.01 |
0.0089 |
|
Sulfides (as Na2S)2S-based ppm |
≤10 |
9.6 |
|
Iron ppm |
≤20 |
19.5 |
|
pH value (200 g/L solution) |
6.5--9.5 |
7 |
Usage:
1. Used as a fixative in the photography industry.
2. Used for electroplating, purifying water and tanning leather.
3. It is also used as a reducing agent in the chemical industry, a dechlorinating agent after cotton fabric bleaching, a sulfur dye for woolen fabrics, a whitening inhibitor for indigo dyes, a dechlorinating agent for pulp, a detergent, disinfectant, and bleaching agent in the pharmaceutical industry, etc.
Packing:
Lined with plastic bags or plastic woven bags, net weight 25kgs per package.
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