PRODUCTS
Sodium sulfite anhydrous
Molecular formula Na2S03
CAS NO. 7757-83-7
Molecular weight：126.04
Feature：
The appearance is a glossy white powder with a smell of sulfurous acid, which is gradually oxidized to sodium carbonate when exposed to the air. Soluble in water, the solution is alkaline and can dissolve sulfur. Slightly soluble in alcohol, no change in dry air
Application：
Used for artificial fiber stabilizer, fabric bleaching agent, photographic developer, dyeing and bleaching deoxidizing agent, fragrance and dye reducing agent, papermaking lignin removing agent, etc.
Package：
External polypropylene woven bag lined with polyethylene plastic bag. The inner bag is punctured and the outer bag is firmly seamed. Net weight per bag 25KG
Storage and transportation：
Store in a cool, dry and ventilated warehouse. Keep away from tinder heat sources. The packaging needs to be sealed and not in contact with air. Do not store and transport with oxidants, strong acids and harmful substances. This product is deliquescent and should not be stored for a long time. Protect from rain and sunlight during transportation.
Technical indicators: Industrial grade: National standard HG/T 2967-2000
|
Specification |
Hi-class |
First-class |
Qualified |
|
Na2SO3≥% |
97 |
96 |
93 |
|
Fe≤% |
0.003 |
0.005 |
0.02 |
|
Water insoluble matter ≤% |
0.02 |
0.03 |
0.05 |
|
Free alkali (Na2CO3)≤% |
0.1 |
0.4 |
0.8 |
|
Sodium sulphate(Na2SO3)≤% |
2.5 |
— |
— |
|
Sodium chloride(NaCl)≤% |
0.1 |
— |
— |
|
Heavy medal (based on Pb)≤% |
— |
— |
0.002 |
|
As≤% |
— |
— |
0.0002 |
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