Quick Detail
Place of Origin
Brand Name
Kemsky
Model Number
sodium sulfite
HS-CODE
29-
Package & Delivery Lead Time
Package
25 kgs bag,1000 kgs big bag
Delivery Lead Time
5-8 days
Detailed Description
SODIUM SULFITE ANHYDROUS
- - - -
1. Grade | Tech grade |
2.Purity | 97% |
3.Molecular formula | Na2SO3 |
4. CAS No | 7757-83-7 |
5. HS CODE | 28321000 |
6. EINECS No | 231-821-4 |
- - - -
Applications
Sodium sulfite is primarily used in the pulp and paper industry. It is used in water treatment as an oxygen scavenger agent, to treat water being fed to steam boilers to avoid corrosion problems,[2] in the photographic industry to protect developer solutions from oxidation and (as hypo clear solution) to wash fixer (sodium thiosulfate) from film and photo-paper emulsions, in the textile industry as a bleaching, desulfurizing and dechlorinating agent and in the leather trade for the sulfitization of tanning extracts. It is used in the purification of TNT for military use. It is used in chemical manufacturing as a sulfonation and sulfomethylation agent. It is used in the production of sodium thiosulfate. It is used in other applications, including froth flotation of ores, oil recovery, food preservatives, and making dyes.
7.Nature:
White crystal or powder; no foul. Soluble in water, very slightly soluble in ethanol, almost insoluble in ether. White hexagonal prismatic crystals, soluble in water (0 12.54g/100ml water; 80 when the 283g/100ml water), in 33.4 The maximum solubility of about 28% when the aqueous solution is alkaline, PH value is about 9 ~ 9.5 . Slightly soluble in alcohol, insoluble in liquid chlorine, ammonia. Easily oxidized in air sodium, when the temperature is decomposed into sodium sulfide. To strengthen the reducing agent, reacts with sulfur dioxide, sodium bisulfite, reacted with the acid salt.
8.Usage:
The role of anhydrous sodium sulfite is extensive, it is in the pharmaceutical industry, paper making, leather tanning and dyeing industries and plant fiber bleaching, food, etc have a very important role. Addition of anhydrous sodium sulfite is also used to film developing, bleaching agents, printing and dyeing industry as a deoxygenation agent.
9.Specification:
- - - -
Anhydyous sodium sulphite |
English name | Anhydyous sodium sulphite |
Molecular formula | Na2SO3 |
Technical specifications | High purity grade | Refined grade | Photographic grade | Industrial grade | Industrial grade | Industrial grade |
Sodium sulfite | Sodium sulfite | Sodium sulfite | High-class product | High-class product | First grade product |
Na2SO3 % | 98 | 98 | 97 | 98 | 97 | 96 |
Fe % | 0.0005 | 0.002 | 0.005 | 0.003 | 0.003 | 0.005 |
Water insoluble % | 0.005 | 0.01 | 0.05 | 0.02 | 0.02 | 0.03 |
Free alkali % | 0.1 | 0.3 | 0.15 | 0.1 | 0.1 | 0.4 |
Sodium sulfate % | 1.5 | 1.5 | | 1.5 | 2.5 | |
Sodium chloride % | 0.005 | 0.02 | | 0.01 | 0.1 | |
Heavy metal on Pb % | 0.001 | 0.002 | 0.002 | | | |
As % | 0.0001 | 0.0005 | | | | |
Sodium thiosulfate % | 0.01 | 0.02 | 0.03 | | | |
Aqueous solution appearance | Qualified | Qualified | Qualified | | | |
Reaction of silver nitrate ammonia solution | | | Qualified | | | |
- - - -
10. Packing : External packing is PP woven bag, Internal packing is PE bag,25 kgs, 50 kgs, 1000 kgs, and 1250 kgs bag packing.
11. Storage & defence: Stored in cool and dry place, avoid moisture and heat. No breakage, No mixed with oxidant and toxic matter. The storage period is 6 month since the production date. It should be transported by clean car, with covering matter, avoid rain.
0 likes
China [CN] 
Click enlarge Image