Sodium metabisulfite
Also known as: Sodium pyrosulfite, Disodium disulfite, Sodium disulfite, Disodium pyrosulfite, E223, Campden Tablets, Fertisilo, Sodium metabisulphite
Sodium metabisulfite (CAS 7681-57-4) is a compound in the Inorganic Chemicals category listed in the Jingsj chemical database. It has the molecular formula Na2O5S2 and a molecular weight of 190.11 g/mol. Key properties include a melting point of 150 °C and a density of 1.48. It is classified under GHS with signal word Danger and hazard statements H302 — Harmful if swallowed and H318 — Causes serious eye damage. It is listed by 1 supplier; request a quote for pricing. Record last updated Aug 21, 2026.
- CAS No.
- 7681-57-4
- Jingsj CID
- J-926467-4
- Molecular Formula
- Na2O5S2
- Molecular Weight
- 190.11 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 | 150 °C |
|---|---|
| Density | 1.48 |
| Exact Mass | 189.898254 |
| PSA | 124.92000 |
| LogP | 0.27220 |
| Additional Property | 540 g/L (20 ºC) |
GHS Safety & Compliance
- H302 — Harmful if swallowed
- H318 — Causes serious eye damage
Activity & Biological Data
| Additional Information | [1]. Elder DP, et al. Pharmaceutical excipients - quality, regulatory and biopharmaceutical considerations. Eur J Pharm Sci. 2016 May 25;87:88-99. |
|---|
Customs & Trade Information
| HS Code | 2832100000 |
|---|
Frequently Asked Questions
What is the CAS number of Sodium metabisulfite?
The CAS number of Sodium metabisulfite is 7681-57-4.
What are the molecular formula and molecular weight of Sodium metabisulfite?
Sodium metabisulfite has molecular formula Na2O5S2 and molecular weight 190.11 g/mol.
Which suppliers offer Sodium metabisulfite?
1 supplier(s) listed; request a quote for pricing.
Is Sodium metabisulfite hazardous?
Sodium metabisulfite has GHS signal word Danger and hazard statements H302 — Harmful if swallowed; H318 — Causes serious eye damage.
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 metabisulfite (CAS 7681-57-4)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-926467-4 (accessed 2026-11-07).
Data for reference only; verify product details with suppliers before purchase.