Boron oxide
Also known as: B-O, B2O3, BORIC OXIDE, BORON OXIDE, BORON TRIOXIDE, Boria, Boron Oxide, Boron oxide (B2O3), Boron trioxide, Dibortrioxid, EINECS 215-125-8, MFCD00011315, boricacid(hbo2),anhydride, boricoxide(b2o3), diboron trioxide, fusedboricacid, oxydedebore, wellno.109b
Boron oxide (CAS 1303-86-2) is a compound in the Inorganic Chemicals category listed in the Jingsj chemical database. It has the molecular formula B2O3 and a molecular weight of 69.62 g/mol. Key properties include a melting point of 450 °C(lit.), a boiling point of 1860 °C, a density of 2.46 g/mL at 25 °C(lit.) and a flash point of 1860°C. GHS signal word: Danger. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 1303-86-2
- Jingsj CID
- J-48489-3
- Molecular Formula
- B2O3
- Molecular Weight
- 69.62 g/mol
- Category
- Inorganic Chemicals
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | 450 °C(lit.) |
|---|---|
| Boiling Point | 1860 °C |
| Density | 2.46 g/mL at 25 °C(lit.) |
| Flash Point | 1860°C |
| PSA | 43.37000 |
| Additional Property | >1 (vs air) |
| Additional Property | 36 g/L (25 ºC) |
GHS Safety & Compliance
Customs & Trade Information
| HS Code | 2810001000 |
|---|
Frequently Asked Questions
What is the CAS number of Boron oxide?
The CAS number of Boron oxide is 1303-86-2.
What are the molecular formula and molecular weight of Boron oxide?
Boron oxide has molecular formula B2O3 and molecular weight 69.62 g/mol.
Is Boron oxide hazardous?
Boron oxide has GHS signal word Danger.
Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "Boron oxide (CAS 1303-86-2)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-48489-3 (accessed 2026-11-06).
Data for reference only; verify product details with suppliers before purchase.