Manganese(III) oxide
Also known as: Dimanganese trioxide, EINECS 215-264-4, MFCD00016217, Manganese manganate, Manganese sesquioxide, Manganese sisquioxide, Manganese trioxide, Manganic oxide, oxo(oxomanganiooxy)manganese
Manganese(III) oxide (CAS 1317-34-6) is a compound in the Inorganic Chemicals category listed in the Jingsj chemical database. It has the molecular formula Mn2O3 and a molecular weight of 157.874 g/mol. Key properties include a melting point of 1080ºC (dec.) and a density of 4.5 g/mL at 25ºC(lit.). It is classified under GHS with signal word Warning and hazard statements H315 — Causes skin irritation, H319 — Causes serious eye irritation and H335 — May cause respiratory irritation. It is listed by 1 supplier; request a quote for pricing. Record last updated Aug 21, 2026.
- CAS No.
- 1317-34-6
- Jingsj CID
- J-43667-9
- Molecular Formula
- Mn2O3
- Molecular Weight
- 157.874 g/mol
- Category
- Inorganic Chemicals
- Last updated
- 8/21/2026
| Supplier | Purity / Pack | Base Price | Unit Price | Origin | |
|---|---|---|---|---|---|
Made to Order | - | - | CN China |
Physicochemical Properties
| Melting Point | 1080ºC (dec.) |
|---|---|
| Density | 4.5 g/mL at 25ºC(lit.) |
| Exact Mass | 157.860840 |
| PSA | 43.37000 |
GHS Safety & Compliance
- H315 — Causes skin irritation
- H319 — Causes serious eye irritation
- H335 — May cause respiratory irritation
Customs & Trade Information
| HS Code | 2820900000 |
|---|
Frequently Asked Questions
What is the CAS number of Manganese(III) oxide?
The CAS number of Manganese(III) oxide is 1317-34-6.
What are the molecular formula and molecular weight of Manganese(III) oxide?
Manganese(III) oxide has molecular formula Mn2O3 and molecular weight 157.874 g/mol.
Which suppliers offer Manganese(III) oxide?
1 supplier(s) listed; request a quote for pricing.
Is Manganese(III) oxide hazardous?
Manganese(III) oxide has GHS signal word Warning and hazard statements H315 — Causes skin irritation; H319 — Causes serious eye irritation; H335 — May cause respiratory irritation.
Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "Manganese(III) oxide (CAS 1317-34-6)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-43667-9 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.