Phosphotungstic acid hydrate
Also known as: Tungstophosphoric acid hydrate, Dodecatungstophosphoric acid hydrate, 12-Tungstophosphoric acid hydrate, Trioxotungsten - phosphoric acid hydrate (12:1:1), Hydrogen phosphotungstate hydrate (H3PW12O40.xH2O)
Phosphotungstic acid hydrate (CAS 12501-23-4) is a compound in the Inorganic Chemicals category listed in the Jingsj chemical database. It has the molecular formula H5O41PW12 and a molecular weight of 2898.069 g/mol. Key property: a melting point of ~95 °C(lit.). It is classified under GHS with signal word Danger and hazard statements H314 — Causes severe skin burns and eye damage. It is listed by 2 suppliers, 1 of which publish reference prices, from 1.98 to 3,220.00 CNY. Record last updated Aug 21, 2026.
- CAS No.
- 12501-23-4
- Jingsj CID
- J-4811-4
- Molecular Formula
- H5O41PW12
- Molecular Weight
- 2898.069 g/mol
- Category
- Inorganic Chemicals
- Last updated
- 8/21/2026
| Supplier | Purity / Pack | Base Price | Unit Price | Origin | |
|---|---|---|---|---|---|
In Stock | AR 500g | ¥990.00 | $0.3 /gBest ¥1.98/g CNY | CN China MOQ 500g | |
In Stock | 试剂级 500g | ¥1,628.00 | $0.49 /g ¥3.26/g CNY | CN China MOQ 500g | |
In Stock | AR 100g | ¥336.00 | $0.5 /g ¥3.36/g CNY | CN China MOQ 100g |
Physicochemical Properties
| Melting Point | ~95 °C(lit.) |
|---|---|
| Exact Mass | 2899.215088 |
| PSA | 711.32000 |
| Additional Property | soluble |
GHS Safety & Compliance
- H314 — Causes severe skin burns and eye damage
Customs & Trade Information
| HS Code | 2811199090 |
|---|
Frequently Asked Questions
What is the CAS number of Phosphotungstic acid hydrate?
The CAS number of Phosphotungstic acid hydrate is 12501-23-4.
What are the molecular formula and molecular weight of Phosphotungstic acid hydrate?
Phosphotungstic acid hydrate has molecular formula H5O41PW12 and molecular weight 2898.069 g/mol.
Which suppliers offer Phosphotungstic acid hydrate?
2 supplier(s) listed; reference unit price ¥1.98–3220.00 /g.
Is Phosphotungstic acid hydrate hazardous?
Phosphotungstic acid hydrate has GHS signal word Danger and hazard statements H314 — Causes severe skin burns and eye damage.
Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "Phosphotungstic acid hydrate (CAS 12501-23-4)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-4811-4 (accessed 2026-11-06).
Data for reference only; verify product details with suppliers before purchase.