Trisodium hydrogen diphosphate

焦磷酸一氢三钠

Also known as: Diphosphoric acid, sodium salt (1:3), Diphosphoric acid, trisodium salt, EINECS 238-735-6, Trisodium hydrogen diphosphate, trisodium [hydroxy(oxido)phosphoryl] phosphate

Trisodium hydrogen diphosphate (CAS 14691-80-6) is a compound in the Inorganic Chemicals category listed in the Jingsj chemical database. It has the molecular formula Na3O8P2 and a molecular weight of 258.91200 g/mol. It is also known as Diphosphoric acid, sodium salt (1:3), Diphosphoric acid, trisodium salt and EINECS 238-735-6. Key property: a melting point of 988ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
14691-80-6
Jingsj CID
J-1333323-8
Molecular Formula
Na3O8P2
Chinese Name
焦磷酸一氢三钠
Molecular Weight
258.91200 g/mol
Category
Inorganic Chemicals
Last updated
8/21/2026

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Physicochemical Properties

Melting Point988ºC

Frequently Asked Questions

What is the CAS number of Trisodium hydrogen diphosphate?

The CAS number of Trisodium hydrogen diphosphate is 14691-80-6.

What are the molecular formula and molecular weight of Trisodium hydrogen diphosphate?

Trisodium hydrogen diphosphate has molecular formula Na3O8P2 and molecular weight 258.91200 g/mol.

Data compiled from public chemical databases and supplier catalogs; supplier offers are provided by suppliers.

Last updated:

How to cite: Jingsj. "Trisodium hydrogen diphosphate (CAS 14691-80-6)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1333323-8 (accessed 2026-10-25).

Data for reference only; verify specifications, grades and regulatory status with suppliers before purchase.