Customization: | Available |
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CAS No.: | 7757-83-7 |
Certification: | SDS |
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Sodium sulfite is an inorganic substance with the chemical formula Na2SO3. It is a sulfite of sodium and is mainly used as a stabilizer for artificial fibers, fabric bleach, photographic developer, dyeing and bleaching deoxidizer, spice and dye reducing agent, and lignin remover for papermaking.
ITEM | SPECIFICATION | TEST RESULT |
Na2SO3 content | 98.0 %min | 98.30% |
Sodium sulphate | 1.5%max | 1.0% |
Sodium chloride (NaCL) | 0.1%max | 0.08% |
Iron (Fe) | 0.003%max | 0.0015% |
Water insoluble | 0.05%max | 0.02% |
Heavy metal as Pb | 10PPM MAX | 5PPM |
Free alkali (as Na2CO3) | 0.30%max | 0.24% |
Q2. Can I get samples for testing?
A: Yes, we provide samples. Customers cover the initial shipping costs, which are reimbursed in our first cooperation.
Q3. How does your factory ensure quality control?
A: Our factory is ISO9001:2008, REACH, and FAMIQS certified, ensuring rigorous quality control. Each Batch of goods do an SGS inspection before leaving our factory.
Q4. What's your Delivery Time?
A: Delivery typically takes 5 to 10 days after payment receipt. Larger orders are confirmed with our production department for prompt, quality-assured delivery.
Q5. What are your payment terms?
A: We accept L/C, T/T, Western Union, and Paypal. Alternative methods can be discussed.
Q6. Which documents do you provide?
A: Standard documents include Commercial Invoice, Price List, Packing List, COA, Origin Certificate, Quality/Quantity Certificate, Beneficiary's Certificate, MSDS, B/L, and others upon request.