Sodium trimetaphosphate
三偏磷酸钠
Also known as: STMP, Trisodium trimetaphosphate, Trimetaphosphate trisodium salt, Sodium cyclotriphosphate, trisodium 2,4,6-trioxido-1,3,5,2λ5,4λ5,6λ5-trioxatriphosphinane 2,4,6-trioxide
Sodium trimetaphosphate (CAS 7785-84-4) is a compound in the Inorganic Chemicals category listed in the Jingsj chemical database. It has the molecular formula Na3O9P3 and a molecular weight of 305.88500 g/mol. It is also known as STMP, Trisodium trimetaphosphate and Trimetaphosphate trisodium salt. Key properties include a melting point of 588ºC and a density of 2.49. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 7785-84-4
- Jingsj CID
- J-1354661-6
- Molecular Formula
- Na3O9P3
- Chinese Name
- 三偏磷酸钠
- Molecular Weight
- 305.88500 g/mol
- Category
- Inorganic Chemicals
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | 588ºC |
|---|---|
| Density | 2.49 |
Frequently Asked Questions
What is the CAS number of Sodium trimetaphosphate?
The CAS number of Sodium trimetaphosphate is 7785-84-4.
What are the molecular formula and molecular weight of Sodium trimetaphosphate?
Sodium trimetaphosphate has molecular formula Na3O9P3 and molecular weight 305.88500 g/mol.
Data compiled from public chemical databases and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "Sodium trimetaphosphate (CAS 7785-84-4)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1354661-6 (accessed 2026-10-25).
Data for reference only; verify specifications, grades and regulatory status with suppliers before purchase.