sodium metabisulfite 97%,98%
Specifications
- Brand
- Tianjin Freetake chemicals Co.,Ltd
- Origin
- China
- Price Term
- FOB
sodium metabisulfite 97%,98% is a Industrial Power Supplies product. Key specs — Brand: Tianjin Freetake chemicals Co.,Ltd; Origin: China; Price Term: FOB.
Product Description
a strong smell of sulfur dioxide, relative density is 1.4, easy to dissolve in water and glycerin, water solution.
Other names
Sodium pyrosulfite
Sodium disulfite
Product Attributes
Classification: Sulphate
Type: Sodium Sulfite
CAS No.: 7681-57-4
ECnumber 231-673-0
HSCode2832100000
Place of Origin: China (Mainland)
Grade Standard: Food Grade, Industrial Grade, M...
Purity: 97%,98%
Appearance: white crystal or powder
Molecular formula Na2S2O5,
Molar mass 190.107 g/mol
Density 1.48 g/ cm3
Melting point >170 °C (begins at 150 °C)
Solubility in water 54 g/100 ml
Detailed Description
Industry grade:
Purity: 96.0%min
Sulfur dioxide: 65.0%min
Iron: 0.002%max
Water insoluble: 0.05%max
Ph value: 4.0-4.8
Food grade:
Purity: 98.0%min
Sulfur dioxide: 65.0%min
Arsenic: 0.0002%max
Heavy metals(as Pb): 0.0005%max
Selenium: 0.0005%max
Iron: 0.001%max
Water insoluble: 0.02%max
Ph value: 4.0-4.8
Specification:
item | Industry grade | Food grade |
Purity | 96.0%min | 98.0%min |
Sulfur dioxide | 65.0%min | 65.0%min |
Iron | 0.002%max | 0.001%max |
Water insoluble | 0.05%max | 0.02%max |
Ph value | 4.0-4.8 | 4.0-4.8 |
Arsenic | - | 0.0002%max |
Heavy metals(as Pb) | - | 0.0005%max |
Selenium | - | 0.0005%max |
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