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Dimethylarsinic acid

Also known as: Cacodylic acid, Dimethylarsonic acid, DMAA, Hydroxydimethylarsine oxide, Ansar, Arsan, Chexmate, Phytar, Silvisar, Arsinic acid, dimethyl-

Dimethylarsinic acid (CAS 75-60-5) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C2H7AsO2 and a molecular weight of 137.997 g/mol. Key properties include a melting point of 195-198 °C, a boiling point of 253.1±23.0 °C at 760 mmHg, a density of >1.1(20ºC) and a flash point of 109.4±17.3 °C. It is classified under GHS with signal word Danger and hazard statements H301 — Toxic if swallowed, H331 — Toxic if inhaled and H315 — Causes skin irritation. No supplier offers are currently listed; request a quote. Record last updated Nov 3, 2026.

CAS No.
75-60-5
Jingsj CID
J-24313-0
Molecular Formula
C2H7AsO2
Molecular Weight
137.997 g/mol
Category
Organic Acids
Last updated
11/3/2026
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Physicochemical Properties

Melting Point195-198 °C
Boiling Point253.1±23.0 °C at 760 mmHg
Density>1.1(20ºC)
Flash Point109.4±17.3 °C
Exact Mass137.966202
PSA37.30000
LogP-1.62
Vapor Pressure0.0±1.1 mmHg at 25°C

GHS Safety & Compliance

Acute Toxicity / Health Hazard / Environmental HazardSignal word: Danger
  • H301 — Toxic if swallowed
  • H331 — Toxic if inhaled
  • H315 — Causes skin irritation
  • H319 — Causes serious eye irritation
  • H335 — May cause respiratory irritation
  • H351 — Suspected of causing cancer
  • H410 — Very toxic to aquatic life with long lasting effects

Frequently Asked Questions

What is the CAS number of Dimethylarsinic acid?

The CAS number of Dimethylarsinic acid is 75-60-5.

What are the molecular formula and molecular weight of Dimethylarsinic acid?

Dimethylarsinic acid has molecular formula C2H7AsO2 and molecular weight 137.997 g/mol.

Is Dimethylarsinic acid hazardous?

Dimethylarsinic acid has GHS signal word Danger and hazard statements H301 — Toxic if swallowed; H331 — Toxic if inhaled; H315 — Causes skin irritation.

What are the upstream and downstream products of Dimethylarsinic acid?

For Dimethylarsinic acid, Upstream Products: Methylarsonic acid, trimethylarsine, nitrogen dioxide; Downstream Products: Tetramethylarsonium iodide, 3,5-Dinitrosalicylic acid, Water.

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

Last updated:

How to cite: Jingsj. "Dimethylarsinic acid (CAS 75-60-5)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-24313-0 (accessed 2026-11-09).

Data for reference only; verify product details with suppliers before purchase.