Potassium hydroxide
Also known as: Caustic potash, Potash lye, Potassium hydrate
Potassium hydroxide (CAS 1310-58-3) is a compound in the Inorganic Chemicals category listed in the Jingsj chemical database. It has the molecular formula HKO and a molecular weight of 56.106 g/mol. Key properties include a melting point of 361 °C(lit.), a boiling point of 1320°C, a density of 1.450 g/mL at 20 °C and a flash point of 11.1 °C. It is classified under GHS with signal word Danger and hazard statements H290, H302 — Harmful if swallowed and H314 — Causes severe skin burns and eye damage. No supplier offers are currently listed; request a quote. Record last updated Nov 2, 2026.
- CAS No.
- 1310-58-3
- Jingsj CID
- J-38457-7
- Molecular Formula
- HKO
- Molecular Weight
- 56.106 g/mol
- Category
- Inorganic Chemicals
- Last updated
- 11/2/2026
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Request a quotePhysicochemical Properties
| Melting Point | 361 °C(lit.) |
|---|---|
| Boiling Point | 1320°C |
| Density | 1.450 g/mL at 20 °C |
| Flash Point | 11.1 °C |
| Exact Mass | 55.966446 |
| PSA | 23.06000 |
| Vapor Pressure | 1 mm Hg ( 719 °C) |
| Refractive Index | n20/D 1.421 |
| Additional Property | soluble |
GHS Safety & Compliance
- H290
- H302 — Harmful if swallowed
- H314 — Causes severe skin burns and eye damage
Customs & Trade Information
| HS Code | 2815200000 |
|---|
Frequently Asked Questions
What is the CAS number of Potassium hydroxide?
The CAS number of Potassium hydroxide is 1310-58-3.
What are the molecular formula and molecular weight of Potassium hydroxide?
Potassium hydroxide has molecular formula HKO and molecular weight 56.106 g/mol.
Is Potassium hydroxide hazardous?
Potassium hydroxide has GHS signal word Danger and hazard statements H290; H302 — Harmful if swallowed; H314 — Causes severe skin burns and eye damage.
What are the upstream and downstream products of Potassium hydroxide?
For Potassium hydroxide, Downstream Products: 3-Hydroxy-2-naphthoic acid, Hydroxylamine, 7-Chloro-1-cyclopropyl-6-fluoro-1,4-dihydro-4-oxoquinoline-3-carboxylic acid.
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 hydroxide (CAS 1310-58-3)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-38457-7 (accessed 2026-11-06).
Data for reference only; verify product details with suppliers before purchase.