Sodium cacodylate trihydrate

二甲砷酸钠三水合物

Also known as: Sodium dimethylarsinate trihydrate, Dimethylarsinic acid sodium salt trihydrate, Cacodylic acid sodium salt trihydrate, Arsinic acid, dimethyl-, sodium salt, hydrate (1:1:3)

Sodium cacodylate trihydrate (CAS 6131-99-3) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C2H12AsNaO5 and a molecular weight of 214.025 g/mol. It is also known as Sodium dimethylarsinate trihydrate, Dimethylarsinic acid sodium salt trihydrate and Cacodylic acid sodium salt trihydrate. Key properties include a melting point of 77-80 °C, a boiling point of 253.1ºC at 760 mmHg and a flash point of 109.4ºC. GHS signal word: Danger. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
6131-99-3
Jingsj CID
J-1063912-2
Molecular Formula
C2H12AsNaO5
Chinese Name
二甲砷酸钠三水合物
Molecular Weight
214.025 g/mol
Category
Organic Acids
Last updated
8/21/2026

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Physicochemical Properties

Melting Point77-80 °C
Boiling Point253.1ºC at 760 mmHg
Flash Point109.4ºC

GHS Safety & Compliance

Acute Toxicity / Health Hazard / Environmental HazardSignal word: Danger

Frequently Asked Questions

What is the CAS number of Sodium cacodylate trihydrate?

The CAS number of Sodium cacodylate trihydrate is 6131-99-3.

What are the molecular formula and molecular weight of Sodium cacodylate trihydrate?

Sodium cacodylate trihydrate has molecular formula C2H12AsNaO5 and molecular weight 214.025 g/mol.

Is Sodium cacodylate trihydrate hazardous?

Sodium cacodylate trihydrate 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 cacodylate trihydrate (CAS 6131-99-3)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1063912-2 (accessed 2026-10-25).

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