beryllium oxide
Also known as: EINECS 215-133-1, MFCD00003457
beryllium oxide (CAS 1304-56-9) is a compound in the Inorganic Chemicals category listed in the Jingsj chemical database. It has the molecular formula BeO and a molecular weight of 25.01160 g/mol. Key properties include a melting point of 2575ºC, a boiling point of 4300ºC, a density of 3.0100g/cm3 and a flash point of 4300°C. It is classified under GHS with signal word Danger and hazard statements H301 — Toxic if swallowed, H315 — Causes skin irritation and H317 — May cause an allergic skin reaction. It is listed by 1 supplier, from 4.00 to 2,500.00 CNY. Record last updated Aug 21, 2026.
- CAS No.
- 1304-56-9
- Jingsj CID
- J-40065-5
- Molecular Formula
- BeO
- Molecular Weight
- 25.01160 g/mol
- Category
- Inorganic Chemicals
- Last updated
- 8/21/2026
| Supplier | Purity / Pack | Base Price | Unit Price | Origin | |
|---|---|---|---|---|---|
In Stock | 99% 500g | ¥2,000.00 | $0.6 /gBest ¥4.00/g CNY | CN China MOQ 500g | |
In Stock | 99% 100g | ¥480.00 | $0.72 /g ¥4.80/g CNY | CN China MOQ 100g | |
In Stock | ≥99% 25g | ¥150.00 | $0.9 /g ¥6.00/g CNY | CN China MOQ 25g |
Physicochemical Properties
| Melting Point | 2575ºC |
|---|---|
| Boiling Point | 4300ºC |
| Density | 3.0100g/cm3 |
| Flash Point | 4300°C |
| Exact Mass | 25.00710 |
| PSA | 17.07000 |
| Refractive Index | 1.733 |
GHS Safety & Compliance
- H301 — Toxic if swallowed
- H315 — Causes skin irritation
- H317 — May cause an allergic skin reaction
- H319 — Causes serious eye irritation
- H330 — Fatal if inhaled
- H335 — May cause respiratory irritation
- H372 — Causes damage to organs through prolonged exposure
Frequently Asked Questions
What is the CAS number of beryllium oxide?
The CAS number of beryllium oxide is 1304-56-9.
What are the molecular formula and molecular weight of beryllium oxide?
beryllium oxide has molecular formula BeO and molecular weight 25.01160 g/mol.
Which suppliers offer beryllium oxide?
1 supplier(s) listed; reference unit price ¥4.00–2500.00 /g.
Is beryllium oxide hazardous?
beryllium oxide has GHS signal word Danger and hazard statements H301 — Toxic if swallowed; H315 — Causes skin irritation; H317 — May cause an allergic skin reaction.
Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "beryllium oxide (CAS 1304-56-9)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-40065-5 (accessed 2026-11-06).
Data for reference only; verify product details with suppliers before purchase.