| Customization: | Available |
|---|---|
| CAS No.: | 7757-83-7 |
| Formula: | Na2so3 |
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Sodium Sulfite 98%, sodium sulphite is a soluble sodium salt of sulfurous acid (sulphite) with the chemical formula Na2SO3.It is a white crystal powder or granule that tastes salty with sulphur odor.
|
CAS RN.: |
7757-83-7 |
|
EINECS: |
231-821-4 |
|
H.S.CODE: |
2832.1000.00 |
1. Chemical Analysis
Sodium Sulphite 98% Crystalline
|
Component |
Range |
Typical |
|
Na2SO3 % |
≥ 98.0 % |
98.37% |
|
Fe % |
≤ 0.003% |
0.003% |
|
Water insoluble matter |
≤ 0.02% |
0.02% |
|
Na2CO3 |
≤ 0.60% |
0.23% |
|
As |
2ppm max. |
- |
|
Pb |
10ppm max. |
<10 ppm |
Sodium Sulphite 97% Powder / Crystaline
|
Component |
Range |
Typical |
|
Na2SO3 % |
≥ 97.0 % |
97.5% |
|
Fe % |
≤ 0.003% |
0.003% |
|
Water insoluble matter |
≤ 0.02% |
0.02% |
|
Na2CO3 |
≤ 0.60% |
0.23% |
Sodium Sulphite 96% Powder / Crystalline
|
Component |
Range |
Typical |
|
Na2SO3 % |
≥ 96.0 % |
96.5% |
|
Fe % |
≤ 0.003% |
0.003% |
|
Water insoluble matter |
≤ 0.02% |
0.02% |
|
Na2CO3 |
≤ 0.60% |
0.23% |
2. Application
|
Pulp and paper industry |
Lignin removal agent |
|
Water treatment |
Oxygen scavenger agent. |
|
Photographic industry |
To protect developer solutions from oxidation and (as hypo clear solution) to wash fixer (sodium thiosulfate) from film and photo-paper emulsions. |
|
Textile industry |
Bleaching, desulfurizing and dechlorinating agent |
|
Chemical manufacturing |
Sulfonation and sulfomethylation agent. It is used in the production of sodium thiosulfate. |
|
Leather trade |
The sulfitization of tanning extracts |
|
Other applications |
l froth flotation of ores l oil recovery l food preservatives l making dyes l It is used in the purification of TNT for military use. |
3. Transportation Information:
|
DOT Classification: |
Not a DOT controlled material |
|
U.N. |
Not applicable |
|
Packing Group: |
Not applicable |
4. Handing & Storage
(1).Precautions:Do not ingest. Do not breathe dust. Wear suitable protective clothing. If ingested, seek medical advice immediately and show the container or the label. Keep away from incompatibles such as oxidizing agents, combustible materials, organic materials, acids.
(2).Storage: Air sensitive. Moisture sensitive. Keep container tightly closed. Keep container in a cool, well-ventilated area.
l In 25kg bags
l 27MT/20'FCL.
l ChoiceChem brand package
l OEM package can be chosen
Who We Are
ChoiceChem is a specialty chemicals company that is in the business of producing and marketing sulphates, nitrates, additives, and pesticides. With 20 years of OEM production experience in China, we help to improve the quality of life for the world's population by supplying superior quality and environmentally friendly chemicals to satisfy global demand in agriculture and industry.
We operate worldwide and have offices in Australia and the United Kingdom offering full services and logistics. Our global reach and the range of our products are continuously developing in line with our customers' needs.
Our mission is to be the supplier of choice for our customers and to deliver meaningful benefits for our consumers, market partners, employees, and the world around us in a sustainable manner and to create brighter lives for people today and for generations to come.
Q: How we control Sodium Sulphite quality?
A:
(1)Choosing high purity raw material
The raw materials for Sodium Sulphite (SS) are Sulphur and Soda Ash.
ChoiceChem uses 99.8% pure imported Sulphur:
Using high purity Sulphur allows the generation of very high purity SO2 which is further used to making high purity SS than usually obtained. ChoiceChem SS's purity is commonly measured above 97%, which is substantially higher than the national standard of 96%.
In addition, using high purity Sulphur allows us to make very white SS. We however have special technology which can control the whiteness to suit different market preferences.
ChoiceChem uses high purity soda ash:
The soda ash which ChoiceChem use has an alkali content of more than 99.2%, and NaCl content of less than 0.97%. Our high purity soda ash help us produce higher purity Sodium Sulphite, and can avoid impurities (like Cl and Iron), which allows our products to better meet printing, dyeing and food industrial requirements.
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