Sodium arsenite

亚砷酸钠

Also known as: Sodium metaarsenite, Arsenenous acid, sodium salt (1:1), Kill-All, Penite, Prodalumnol, Rat Death Liquid, Sodanit, Sodium dioxoarsenate, sodium,oxoarsinite

Sodium arsenite (CAS 7784-46-5) is a compound in the Inorganic Chemicals category listed in the Jingsj chemical database. It has the molecular formula AsHNaO2 and a molecular weight of 130.91800 g/mol. It is also known as Sodium metaarsenite, Arsenenous acid, sodium salt (1:1) and Kill-All. Key properties include a melting point of 817 °C(lit.), a boiling point of 613 °C(lit.) and a density of 5.727 g/mL at 25 °C(lit.). GHS signal word: Danger. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
7784-46-5
Jingsj CID
J-1506124-9
Molecular Formula
AsHNaO2
Chinese Name
亚砷酸钠
Molecular Weight
130.91800 g/mol
Category
Inorganic Chemicals
Last updated
8/21/2026

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Physicochemical Properties

Melting Point817 °C(lit.)
Boiling Point613 °C(lit.)
Density5.727 g/mL at 25 °C(lit.)

GHS Safety & Compliance

Acute Toxicity / Health Hazard / Environmental HazardSignal word: Danger

Frequently Asked Questions

What is the CAS number of Sodium arsenite?

The CAS number of Sodium arsenite is 7784-46-5.

What are the molecular formula and molecular weight of Sodium arsenite?

Sodium arsenite has molecular formula AsHNaO2 and molecular weight 130.91800 g/mol.

Is Sodium arsenite hazardous?

Sodium arsenite has GHS signal word Danger.

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

Last updated:

How to cite: Jingsj. "Sodium arsenite (CAS 7784-46-5)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1506124-9 (accessed 2026-10-23).

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