Sodium sulfite
Also known as: Sodium sulfite anhydrous, Sodium sulphite, Anhydrous sodium sulfite, Disodium sulfite, Sulfurous acid disodium salt, Natrii sulphis, Natrium sulfurosum, Sodium sulfite solution, anhydrous sodium sulphite, sodium sulphite powder
Sodium sulfite (CAS 7757-83-7) is a compound in the Inorganic Chemicals category listed in the Jingsj chemical database. It has the molecular formula Na2SO3 and a molecular weight of 126.043 g/mol. Key properties include a melting point of 500 °C and a density of 2.63. It is listed by 1 supplier; request a quote for pricing. Record last updated Aug 21, 2026.
- CAS No.
- 7757-83-7
- Jingsj CID
- J-1498414-1
- Molecular Formula
- Na2SO3
- Molecular Weight
- 126.043 g/mol
- Category
- Inorganic Chemicals
- Last updated
- 8/21/2026
| Supplier | Purity / Pack | Base Price | Unit Price | Origin | |
|---|---|---|---|---|---|
Made to Order | - | - | CN China |
Physicochemical Properties
| Melting Point | 500 °C |
|---|---|
| Density | 2.63 |
| Exact Mass | 125.936356 |
| PSA | 82.40000 |
| Refractive Index | 1.484 |
| Additional Property | 23 g/100 mL (20 ºC) |
Customs & Trade Information
| HS Code | 2832100000 |
|---|
Frequently Asked Questions
What is the CAS number of Sodium sulfite?
The CAS number of Sodium sulfite is 7757-83-7.
What are the molecular formula and molecular weight of Sodium sulfite?
Sodium sulfite has molecular formula Na2SO3 and molecular weight 126.043 g/mol.
Which suppliers offer Sodium sulfite?
1 supplier(s) listed; request a quote for pricing.
What are the upstream and downstream products of Sodium sulfite?
For Sodium sulfite, Upstream Products: Sodium sulfate, SULFUR DIOXIDE, sodium carbonate; Downstream Products: Sodium 3-hydroxypropane-1-sulfonate, 2-Bromo-2,2-difluoroacetic acid, 4-Bromo-2,6-dichlorophenol.
Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "Sodium sulfite (CAS 7757-83-7)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1498414-1 (accessed 2026-11-06).
Data for reference only; verify product details with suppliers before purchase.