barium
Also known as: EINECS 231-149-1, MFCD00134031, UNII-24GP945V5T, bario, barium powder, barium strontium-containing oxide, barium(0), baryum
barium (CAS 7440-39-3) is a compound in the Inorganic Chemicals category listed in the Jingsj chemical database. It has the molecular formula Ba and a molecular weight of 137.32700 g/mol. Key properties include a melting point of 725 °C(lit.), a boiling point of 1640 °C(lit.) and a density of 3.6 g/mL at 25 °C(lit.). It is classified under GHS with signal word Danger and hazard statements H261, H315 — Causes skin irritation and H319 — Causes serious eye irritation. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 7440-39-3
- Jingsj CID
- J-6665-3
- Molecular Formula
- Ba
- Molecular Weight
- 137.32700 g/mol
- Category
- Inorganic Chemicals
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | 725 °C(lit.) |
|---|---|
| Boiling Point | 1640 °C(lit.) |
| Density | 3.6 g/mL at 25 °C(lit.) |
| Exact Mass | 137.90500 |
| Appearance | rod |
GHS Safety & Compliance
- H261
- H315 — Causes skin irritation
- H319 — Causes serious eye irritation
- H335 — May cause respiratory irritation
Frequently Asked Questions
What is the CAS number of barium?
The CAS number of barium is 7440-39-3.
What are the molecular formula and molecular weight of barium?
barium has molecular formula Ba and molecular weight 137.32700 g/mol.
Is barium hazardous?
barium has GHS signal word Danger and hazard statements H261; H315 — Causes skin irritation; H319 — Causes serious eye irritation.
What are the upstream and downstream products of barium?
For barium, Upstream Products: titanium; Downstream Products: Barium hydroxide, Tetraphenylstannane, Triphenyltin chloride.
Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "barium (CAS 7440-39-3)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-6665-3 (accessed 2026-11-06).
Data for reference only; verify product details with suppliers before purchase.