Sodium hydroxide
Also known as: Caustic soda, NaOH, Lye, Soda lye, Sodium hydrate
Sodium hydroxide (CAS 1310-73-2) is a compound in the Inorganic Chemicals category listed in the Jingsj chemical database. It has the molecular formula HNaO and a molecular weight of 39.997 g/mol. Key properties include a melting point of 318 ºC, a boiling point of 1390 ºC, a density of 2.13 and a flash point of 176-178°C. It is classified under GHS with signal word Danger and hazard statements H290 and H314 — Causes severe skin burns and eye damage. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 1310-73-2
- Jingsj CID
- J-38500-6
- Molecular Formula
- HNaO
- Molecular Weight
- 39.997 g/mol
- Category
- Inorganic Chemicals
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | 318 ºC |
|---|---|
| Boiling Point | 1390 ºC |
| Density | 2.13 |
| Flash Point | 176-178°C |
| Exact Mass | 39.992512 |
| PSA | 23.06000 |
| Additional Property | <1 (vs air) |
| Vapor Pressure | 24.5mmHg at 25°C |
| Refractive Index | 1.473-1.475 |
| Additional Property | SOLUBLE |
GHS Safety & Compliance
- H290
- H314 — Causes severe skin burns and eye damage
Customs & Trade Information
| HS Code | 2815110000 |
|---|
Frequently Asked Questions
What is the CAS number of Sodium hydroxide?
The CAS number of Sodium hydroxide is 1310-73-2.
What are the molecular formula and molecular weight of Sodium hydroxide?
Sodium hydroxide has molecular formula HNaO and molecular weight 39.997 g/mol.
Is Sodium hydroxide hazardous?
Sodium hydroxide has GHS signal word Danger and hazard statements H290; 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. "Sodium hydroxide (CAS 1310-73-2)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-38500-6 (accessed 2026-11-06).
Data for reference only; verify product details with suppliers before purchase.