tantalum
Also known as: EINECS 231-135-5, MFCD00011252, TANTALUM, TANTALUM ICP STANDARD, TANTALUM PLASMA EMISSION SPECTROSCOPY STANDARD, TANTALUM PLASMA EMISSION STANDARD, TANTALUM SINGLE ELEMENT PLASMA STANDARD, TANTALUM SINGLE ELEMENT STANDARD, TANTALUM STANDARD, TANTALUM TUBING, Tantalum, tantalum atom
tantalum (CAS 7440-25-7) is a compound in the Inorganic Chemicals category listed in the Jingsj chemical database. It has the molecular formula Ta and a molecular weight of 180.94800 g/mol. Key properties include a melting point of 2996 °C(lit.), a boiling point of 5425 °C(lit.) and a density of 16,6 g/cm3. It is classified under GHS with signal word Warning and hazard statements H228, H315 — Causes skin irritation and H319 — Causes serious eye irritation. It is listed by 1 supplier; request a quote for pricing. Record last updated Aug 21, 2026.
- CAS No.
- 7440-25-7
- Jingsj CID
- J-20040-6
- Molecular Formula
- Ta
- Molecular Weight
- 180.94800 g/mol
- Category
- Inorganic Chemicals
- Last updated
- 8/21/2026
| Supplier | Purity / Pack | Base Price | Unit Price | Origin | |
|---|---|---|---|---|---|
Made to Order | 99.9% 500g | - | - | CN China MOQ 500g | |
Made to Order | 99.9% 1kg | - | - | CN China MOQ 1kg | |
Made to Order | 99.9% 25kg | - | - | CN China MOQ 25kg |
Physicochemical Properties
| Melting Point | 2996 °C(lit.) |
|---|---|
| Boiling Point | 5425 °C(lit.) |
| Density | 16,6 g/cm3 |
| Exact Mass | 180.94800 |
| Vapor Pressure | <0.01 mm Hg ( 537.2 °C) |
GHS Safety & Compliance
- H228
- H315 — Causes skin irritation
- H319 — Causes serious eye irritation
- H335 — May cause respiratory irritation
Frequently Asked Questions
What is the CAS number of tantalum?
The CAS number of tantalum is 7440-25-7.
What are the molecular formula and molecular weight of tantalum?
tantalum has molecular formula Ta and molecular weight 180.94800 g/mol.
Which suppliers offer tantalum?
1 supplier(s) listed; request a quote for pricing.
Is tantalum hazardous?
tantalum has GHS signal word Warning and hazard statements H228; H315 — Causes skin irritation; H319 — Causes serious eye 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. "tantalum (CAS 7440-25-7)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-20040-6 (accessed 2026-11-06).
Data for reference only; verify product details with suppliers before purchase.