Oxygen
Also known as: AUTOMOTIVE STANDARD R99-5, AUTOMOTIVE STANDARD R99-6, Dioxygen, EINECS 231-956-9, HYDROGEN AND OXYGEN, Liquid-oxygen-, MFCD00011434, OXYGEN, PRESSURE TIN WITH 1 L, dioxygen, hydroperoxide radical, hydroperoxo radical, hydroperoxy radical, hydroperoxyl radical, hyperoxia, liquidoxygen, lox, oxigeno, oxygen-16, oxygene, oxygengas
Oxygen (CAS 7782-44-7) is a compound in the Inorganic Chemicals category listed in the Jingsj chemical database. It has the molecular formula O2 and a molecular weight of 31.99880 g/mol. Key properties include a melting point of −218 °C(lit.), a boiling point of −183 °C(lit.), a density of 1.429（0℃） and a flash point of none. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 7782-44-7
- Jingsj CID
- J-23949-7
- Molecular Formula
- O2
- Molecular Weight
- 31.99880 g/mol
- Category
- Inorganic Chemicals
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | −218 °C(lit.) |
|---|---|
| Boiling Point | −183 °C(lit.) |
| Density | 1.429（0℃） |
| Flash Point | none |
| Exact Mass | 31.98980 |
| PSA | 34.14000 |
| LogP | 0.06700 |
| Additional Property | 1.11 (vs air) |
| Vapor Pressure | 3.27E-25mmHg at 25°C |
| Refractive Index | 1.776 |
Customs & Trade Information
| HS Code | 2804400000 |
|---|
Frequently Asked Questions
What is the CAS number of Oxygen?
The CAS number of Oxygen is 7782-44-7.
What are the molecular formula and molecular weight of Oxygen?
Oxygen has molecular formula O2 and molecular weight 31.99880 g/mol.
What are the upstream and downstream products of Oxygen?
For Oxygen, Upstream Products: Water, Methanol, ozone; Downstream Products: Oxygen, Ethylene oxide, nitrogen dioxide.
Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "Oxygen (CAS 7782-44-7)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-23949-7 (accessed 2026-11-06).
Data for reference only; verify product details with suppliers before purchase.