Sodium dihydrogen phosphate

磷酸二氢钠

Also known as: Monosodium phosphate, Sodium phosphate monobasic, Acid sodium phosphate, Sodium biphosphate, Primary sodium phosphate, Sodium dihydrogen phosphate anhydrous, sodium dihydroxy-oxido-oxo-phosphorane, MSP

Sodium dihydrogen phosphate (CAS 89140-32-9) is a compound in the Inorganic Chemicals category listed in the Jingsj chemical database. It has the molecular formula H2NaO4P and a molecular weight of 119.97700 g/mol. It is also known as Monosodium phosphate, Sodium phosphate monobasic and Acid sodium phosphate. Key property: a melting point of 200ºC (decomposes). No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
89140-32-9
Jingsj CID
J-1362107-0
Molecular Formula
H2NaO4P
Chinese Name
磷酸二氢钠
Molecular Weight
119.97700 g/mol
Category
Inorganic Chemicals
Last updated
8/21/2026

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Physicochemical Properties

Melting Point200ºC (decomposes)

Frequently Asked Questions

What is the CAS number of Sodium dihydrogen phosphate?

The CAS number of Sodium dihydrogen phosphate is 89140-32-9.

What are the molecular formula and molecular weight of Sodium dihydrogen phosphate?

Sodium dihydrogen phosphate has molecular formula H2NaO4P and molecular weight 119.97700 g/mol.

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

Last updated:

How to cite: Jingsj. "Sodium dihydrogen phosphate (CAS 89140-32-9)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1362107-0 (accessed 2026-10-25).

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