Disodium hydrogen arsenate

砷酸氢二钠

Also known as: SODIUM ARSENATE, disodium arsenate, disodium arsenic acid, disodium hydrogen orthoarsenate, arsenic acid, disodium salt, Arsenic acid (H3AsO4), disodium salt, Sodium acid arsenate, Dibasic sodium arsenate, Sodium secondary arsenate, Sodium arsenate, dibasic

Disodium hydrogen arsenate (CAS 7778-43-0) is a compound in the Inorganic Chemicals category listed in the Jingsj chemical database. It has the molecular formula Na₂HAsO₄ and a molecular weight of 185.91 g/mol. It is also known as SODIUM ARSENATE, disodium arsenate and disodium arsenic acid. Key properties include a melting point of 86.3ºC and a density of 1.752. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
7778-43-0
Jingsj CID
J-1952302-2
Molecular Formula
NaHAsO
Chinese Name
砷酸氢二钠
Molecular Weight
185.91 g/mol
Category
Inorganic Chemicals
Last updated
8/21/2026

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Physicochemical Properties

Melting Point86.3ºC
Density1.752

Frequently Asked Questions

What is the CAS number of Disodium hydrogen arsenate?

The CAS number of Disodium hydrogen arsenate is 7778-43-0.

What are the molecular formula and molecular weight of Disodium hydrogen arsenate?

Disodium hydrogen arsenate has molecular formula Na₂HAsO₄ and molecular weight 185.91 g/mol.

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

Last updated:

How to cite: Jingsj. "Disodium hydrogen arsenate (CAS 7778-43-0)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1952302-2 (accessed 2026-10-24).

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