Magnesium oxide
Also known as: EINECS 215-171-9, Ethanedioic acid,magnesium salt, MAGNESIUM PERMANGANATE HYDRATE, MFCD00011109, Magnesiumoxalat, Magnesiumoxalat-2-hydrat, Magnesiumoxalatedihydrate, Mg monoxide, MgO, Oxalic acid magnesium, Oxalic acid magnesium salt, magnesium monoxide, magnesium oxalate, magnesium oxalate dihydrate,puratronic
Magnesium oxide (CAS 1309-48-4) is a compound in the Inorganic Chemicals category listed in the Jingsj chemical database. It has the molecular formula MgO and a molecular weight of 40.304 g/mol. Key properties include a melting point of 2852ºC, a boiling point of 3600ºC, a density of 3.58 and a flash point of 3600ºC. It is listed by 2 suppliers, 1 of which publish reference prices, from 0.07 to 2,570.00 CNY. Record last updated Aug 21, 2026.
- CAS No.
- 1309-48-4
- Jingsj CID
- J-40091-4
- Molecular Formula
- MgO
- Molecular Weight
- 40.304 g/mol
- Category
- Inorganic Chemicals
- Last updated
- 8/21/2026
| Supplier | Purity / Pack | Base Price | Unit Price | Origin | |
|---|---|---|---|---|---|
In Stock | AR 500g | ¥36.00 | $0.01 /gBest ¥0.07/g CNY | CN China MOQ 500g | |
In Stock | 99%,50nm 500g | ¥185.00 | $0.06 /g ¥0.37/g CNY | CN China MOQ 500g | |
In Stock | 99.9% 1um 500g | ¥260.00 | $0.08 /g ¥0.52/g CNY | CN China MOQ 500g |
Physicochemical Properties
| Melting Point | 2852ºC |
|---|---|
| Boiling Point | 3600ºC |
| Density | 3.58 |
| Flash Point | 3600ºC |
| Exact Mass | 39.979958 |
| PSA | 17.07000 |
| Refractive Index | 1.736 |
| Additional Property | 5 M HCl: 0.1 M at 20 °C, clear, colorless | 6.2 mg/L (20 ºC), reacts |
Customs & Trade Information
| HS Code | 25199010 |
|---|
Frequently Asked Questions
What is the CAS number of Magnesium oxide?
The CAS number of Magnesium oxide is 1309-48-4.
What are the molecular formula and molecular weight of Magnesium oxide?
Magnesium oxide has molecular formula MgO and molecular weight 40.304 g/mol.
Which suppliers offer Magnesium oxide?
2 supplier(s) listed; reference unit price ¥0.07–2570.00 /g.
What are the upstream and downstream products of Magnesium oxide?
For Magnesium oxide, Upstream Products: nitrous oxide, ozone.
Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "Magnesium oxide (CAS 1309-48-4)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-40091-4 (accessed 2026-11-06).
Data for reference only; verify product details with suppliers before purchase.