Product Description
Product name:Sodium Sulfite Anhydrous
Chemical Formula:Na2SO3
Cas:7757-83-7
Description:Industrial - grade sodium sulfite (Na2SO3) is an important inorganic chemical product. It appears as white crystals or powder and is easily soluble in water, with its aqueous solution being alkaline.
In terms of chemical properties, sodium sulfite has a relatively strong reducing ability. The valence of sulfur element in sodium sulfite is + 4, which enables it to react with many oxidizing agents.
Product Parameters
TEST ITEMS
|
TEST STANDARD
|
TEST RESULT
|
Na2SO3
|
≥97.0% |
98.10% |
IRON(Fe)
|
≤0.003% |
0.0015% |
WATER INSOLUBLE
|
≤0.02% |
0.01% |
Na2CO3
|
≤0.10% |
0.10% |
SULPHATES(SO4)
|
≤2.5% |
1.0% |
CHLORIDE(NaCl)
|
≤0.10% |
0.10% |
CLEARNESS
|
THROUGH EXPERIMENTS
|
APPEARANCE
|
WHITE CRYSTALLINE POWDER
|
Application
In tap water treatment or industrial circulating water systems, there may be residual in the water. Residual can cause damage to aquatic organisms and some water-using equipment. Sodium sulfite can effectively remove residual.
In the pulping process of the paper industry, sodium sulfite is a commonly used cooking additive. In chemical pulping methods, especially in the sulfate process and sulfite process, sodium sulfite participates in the reaction. It can chemically react with lignin to separate lignin from plant fibers, thereby obtaining cellulose pulp with a relatively high purity.
Sodium sulfite can also prevent printed and dyed fabrics from oxidizing and changing color during subsequent processing or storage. Fabrics are easily exposed to oxygen in the air and undergo oxidation reactions, leading to color fading or discoloration. As an antioxidant, sodium sulfite can react with oxygen and consume oxygen, thereby protecting the color of fabrics.
Packaging & Shipping
Packing: Package in 25/1000 bag, also accpet customer OEM packing.
Storage: Keep in a cool, dry, dark location in a tightly sealed container or cylinder.
Certifications and Reviews


Company Profile
Shandong Jiuchong Chemical Company Limited was founded in 2016, which is located in Weifang City, Shandong Province, China. We have 228 square meters of office space. Now Jiuchong chemical is a large modern international chemical enterprise with more than 28 series. Since our establishment, the company has gradually established and improved a sound supply chain system, quality monitoring system and service system, ensuring products quality and service.
At the same time, relying on our own geographical location and resource advantages, our company is committed to the optimization of a variety of chemical supply chain, including magnesium chloride, sodium metabisulfite, sodium bicarbonate, calcium chloride, magnesium sulfate, polyaluminium chloride, aluminium sulfate, industrial salt, soda ash etc.
Our products are sold well in 288 domestic cities and more than 36 foreign countries. Now the company has won the praise and trust of domestic and foreign customers. Based on stable quality and output, good team service and staff efforts, we will continue to develop domestic and foreign markets.
Jiuchong chemical takes "integrity, innovation and development" as the concept, puts integrity in the priority position in serving customers, and guarantees high quality products and satisfactory cooperation for customers experience. Your satisfaction is our driving force. Quality is the soul of enterprise and that is what we have always done. In the future, Shandong Jiuchong Chemical Company Limited hopes to build a brilliant tomorrow with you!
Customer Visiting

FAQ
Q: How long is your delivery time?
A: It usually takes 7-10 days if the goods are in stock, or 10-15 days if the goods are not, depending on the quantity ordered.
Q: Can you support OEM ?
A: Yes, we can make products as your request.
Q: Do you provide samples?
A: Yes, we could offer the sample for free by requests but are not responsible for the freight cost.
Q: What payment terms do you accept?
A: We accept T/T, L/C at sight;