Diammonium hydrogen phosphite

亚磷酸氢二铵

Also known as: Diammonium hydrogen phosphite monohydrate, Ammonium hydrogenphosphite, Diammonium phosphite, Ammonium phosphite, dibasic

Diammonium hydrogen phosphite (CAS 51503-61-8) is a compound in the Inorganic Chemicals category listed in the Jingsj chemical database. It has the molecular formula H9N2O3P and a molecular weight of 116.057 g/mol. It is also known as Diammonium hydrogen phosphite monohydrate, Ammonium hydrogenphosphite and Diammonium phosphite. Key properties include a melting point of decomposes at 155 (anhydrous) [CRC10] and a density of 1.619 (anhydrous) [CRC10]. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
51503-61-8
Jingsj CID
J-1360739-9
Molecular Formula
H9N2O3P
Chinese Name
亚磷酸氢二铵
Molecular Weight
116.057 g/mol
Category
Inorganic Chemicals
Last updated
8/21/2026

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Physicochemical Properties

Melting Pointdecomposes at 155 (anhydrous) [CRC10]
Density1.619 (anhydrous) [CRC10]

Frequently Asked Questions

What is the CAS number of Diammonium hydrogen phosphite?

The CAS number of Diammonium hydrogen phosphite is 51503-61-8.

What are the molecular formula and molecular weight of Diammonium hydrogen phosphite?

Diammonium hydrogen phosphite has molecular formula H9N2O3P and molecular weight 116.057 g/mol.

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

Last updated:

How to cite: Jingsj. "Diammonium hydrogen phosphite (CAS 51503-61-8)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1360739-9 (accessed 2026-10-25).

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