Potassium metabisulfite
焦亚硫酸钾
Also known as: Potassium pyrosulfite, Dipotassium disulfite, Potassium metabisulphite, Dipotassium disulphite, Disulfurous acid, dipotassium salt
Potassium metabisulfite (CAS 16731-55-8) is a compound in the Inorganic Chemicals category listed in the Jingsj chemical database. It has the molecular formula K2O5S2 and a molecular weight of 222.32400 g/mol. It is also known as Potassium pyrosulfite, Dipotassium disulfite and Potassium metabisulphite. Key properties include a melting point of 190ºC and a density of 2.34 g/cm3. GHS signal word: Danger. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 16731-55-8
- Jingsj CID
- J-1361930-3
- Molecular Formula
- K2O5S2
- Chinese Name
- 焦亚硫酸钾
- Molecular Weight
- 222.32400 g/mol
- Category
- Inorganic Chemicals
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | 190ºC |
|---|---|
| Density | 2.34 g/cm3 |
GHS Safety & Compliance
Frequently Asked Questions
What is the CAS number of Potassium metabisulfite?
The CAS number of Potassium metabisulfite is 16731-55-8.
What are the molecular formula and molecular weight of Potassium metabisulfite?
Potassium metabisulfite has molecular formula K2O5S2 and molecular weight 222.32400 g/mol.
Is Potassium metabisulfite hazardous?
Potassium metabisulfite has GHS signal word Danger.
Data compiled from public chemical databases and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "Potassium metabisulfite (CAS 16731-55-8)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1361930-3 (accessed 2026-10-25).
Data for reference only; verify specifications, grades and regulatory status with suppliers before purchase.