Potassium metabisulfite
焦亚硫酸钾
Also known as: Potassium pyrosulfite, Dipotassium pyrosulfite, Dipotassium disulfite, Potassium disulfite, Potassium metabisulphite, di-potassium disulphite
Potassium metabisulfite (CAS 4429-42-9) is a compound in the Inorganic Chemicals category listed in the Jingsj chemical database. It has the molecular formula HKO3S and a molecular weight of 120.16900 g/mol. It is also known as Potassium pyrosulfite, Dipotassium pyrosulfite and Dipotassium disulfite. Key property: a melting point of 190ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 4429-42-9
- Jingsj CID
- J-1526017-2
- Molecular Formula
- HKO3S
- Chinese Name
- 焦亚硫酸钾
- Molecular Weight
- 120.16900 g/mol
- Category
- Inorganic Chemicals
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | 190ºC |
|---|
Frequently Asked Questions
What is the CAS number of Potassium metabisulfite?
The CAS number of Potassium metabisulfite is 4429-42-9.
What are the molecular formula and molecular weight of Potassium metabisulfite?
Potassium metabisulfite has molecular formula HKO3S and molecular weight 120.16900 g/mol.
Data compiled from public chemical databases and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "Potassium metabisulfite (CAS 4429-42-9)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1526017-2 (accessed 2026-10-24).
Data for reference only; verify specifications, grades and regulatory status with suppliers before purchase.