Potassium pyrosulfate
Also known as: dipotassium disulfate, potassium disulfate, dipotassium pyrosulfate, dipotassium (sulfonatooxy)sulfonate, disulfuric acid dipotassium salt
Potassium pyrosulfate (CAS 7790-62-7) is a compound in the Inorganic Chemicals category listed in the Jingsj chemical database. It has the molecular formula K2O7S2 and a molecular weight of 254.32200 g/mol. Key properties include a melting point of 325 °C and a density of 2.28 g/mL at 25 °C(lit.). It is classified under GHS with signal word Danger and hazard statements H314 — Causes severe skin burns and eye damage. It is listed by 1 supplier; request a quote for pricing. Record last updated Aug 21, 2026.
- CAS No.
- 7790-62-7
- Jingsj CID
- J-27335-8
- Molecular Formula
- K2O7S2
- Molecular Weight
- 254.32200 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 | 325 °C |
|---|---|
| Density | 2.28 g/mL at 25 °C(lit.) |
| Exact Mass | 253.83600 |
| PSA | 140.39000 |
| LogP | 0.08500 |
| Additional Property | MAY DECOMPOSE |
GHS Safety & Compliance
- H314 — Causes severe skin burns and eye damage
Customs & Trade Information
| HS Code | 3104300000 |
|---|
Frequently Asked Questions
What is the CAS number of Potassium pyrosulfate?
The CAS number of Potassium pyrosulfate is 7790-62-7.
What are the molecular formula and molecular weight of Potassium pyrosulfate?
Potassium pyrosulfate has molecular formula K2O7S2 and molecular weight 254.32200 g/mol.
Which suppliers offer Potassium pyrosulfate?
1 supplier(s) listed; request a quote for pricing.
Is Potassium pyrosulfate hazardous?
Potassium pyrosulfate has GHS signal word Danger and hazard statements H314 — Causes severe skin burns and 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. "Potassium pyrosulfate (CAS 7790-62-7)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-27335-8 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.