Cuprous oxide
Also known as: Curpous oxide, EINECS 215-270-7, MFCD00010974, copper oxide (Cu2O), copper(1+) oxide, copper,hydrate, cuprous oxide
Cuprous oxide (CAS 1317-39-1) is a compound in the Inorganic Chemicals category listed in the Jingsj chemical database. It has the molecular formula Cu2O and a molecular weight of 143.091 g/mol. Key properties include a melting point of 1232 °C, a boiling point of 1800 °C, a density of 6 g/mL at 25 °C(lit.) and a flash point of 1800°C. It is classified under GHS with signal word Warning and hazard statements H302 — Harmful if swallowed, H332 — Harmful if inhaled and H319 — Causes serious eye irritation. It is listed by 2 suppliers, 1 of which publish reference prices, from 0.32 to 3,000.00 CNY. Record last updated Aug 21, 2026.
- CAS No.
- 1317-39-1
- Jingsj CID
- J-892518-3
- Molecular Formula
- Cu2O
- Molecular Weight
- 143.091 g/mol
- Category
- Inorganic Chemicals
- Last updated
- 8/21/2026
| Supplier | Purity / Pack | Base Price | Unit Price | Origin | |
|---|---|---|---|---|---|
In Stock | AR 500g | ¥160.00 | $0.05 /gBest ¥0.32/g CNY | CN China MOQ 500g | |
In Stock | 99% 500g | ¥360.00 | $0.11 /g ¥0.72/g CNY | CN China MOQ 500g | |
In Stock | 99% 100g | ¥125.00 | $0.19 /g ¥1.25/g CNY | CN China MOQ 100g |
Physicochemical Properties
| Melting Point | 1232 °C |
|---|---|
| Boiling Point | 1800 °C |
| Density | 6 g/mL at 25 °C(lit.) |
| Flash Point | 1800°C |
| Exact Mass | 141.854111 |
| Refractive Index | 2.705 |
| Additional Property | practically insoluble |
GHS Safety & Compliance
- H302 — Harmful if swallowed
- H332 — Harmful if inhaled
- H319 — Causes serious eye irritation
- H410 — Very toxic to aquatic life with long lasting effects
Frequently Asked Questions
What is the CAS number of Cuprous oxide?
The CAS number of Cuprous oxide is 1317-39-1.
What are the molecular formula and molecular weight of Cuprous oxide?
Cuprous oxide has molecular formula Cu2O and molecular weight 143.091 g/mol.
Which suppliers offer Cuprous oxide?
2 supplier(s) listed; reference unit price ¥0.32–3000.00 /g.
Is Cuprous oxide hazardous?
Cuprous oxide has GHS signal word Warning and hazard statements H302 — Harmful if swallowed; H332 — Harmful if inhaled; H319 — Causes serious eye irritation.
What are the upstream and downstream products of Cuprous oxide?
For Cuprous oxide, Downstream Products: 4-Phenylphenol, 4,4'-Dihydroxybiphenyl, 1-Bromo-3,5-difluorobenzene.
Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "Cuprous oxide (CAS 1317-39-1)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-892518-3 (accessed 2026-11-06).
Data for reference only; verify product details with suppliers before purchase.