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Azinphos-ethyl

Also known as: Azinphos ethyl, Azinos, Bionex, Crysthion, Gusathion, Gusathion H & K, Gutex, O,O-Diethyl S-[(4-oxo-1,2,3-benzotriazin-3(4H)-yl)methyl] phosphorodithioate, triazothion, 3-(diethoxyphosphinothioylsulfanylmethyl)-1,2,3-benzotriazin-4-one

Azinphos-ethyl (CAS 2642-71-9) is a compound in the Organic Compounds category listed in the Jingsj chemical database. It has the molecular formula C12H16N3O3PS2 and a molecular weight of 345.378 g/mol. Key properties include a melting point of 53ºC, a boiling point of 444.7±55.0 °C at 760 mmHg, a density of 1.4±0.1 g/cm3 and a flash point of 222.7±31.5 °C. It is classified under GHS with signal word Danger and hazard statements H300, H311 — Toxic in contact with skin and H410 — Very toxic to aquatic life with long lasting effects. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
2642-71-9
Jingsj CID
J-1331285-1
Molecular Formula
C12H16N3O3PS2
Molecular Weight
345.378 g/mol
Category
Organic Compounds
Last updated
8/21/2026

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Physicochemical Properties

Melting Point53ºC
Boiling Point444.7±55.0 °C at 760 mmHg
Density1.4±0.1 g/cm3
Flash Point222.7±31.5 °C
Exact Mass345.037079
PSA133.44000
LogP3.61
Vapor Pressure0.0±1.1 mmHg at 25°C
Refractive Index1.651

GHS Safety & Compliance

Acute Toxicity / Environmental HazardSignal word: Danger
  • H300
  • H311 — Toxic in contact with skin
  • H410 — Very toxic to aquatic life with long lasting effects

Frequently Asked Questions

What is the CAS number of Azinphos-ethyl?

The CAS number of Azinphos-ethyl is 2642-71-9.

What are the molecular formula and molecular weight of Azinphos-ethyl?

Azinphos-ethyl has molecular formula C12H16N3O3PS2 and molecular weight 345.378 g/mol.

Is Azinphos-ethyl hazardous?

Azinphos-ethyl has GHS signal word Danger and hazard statements H300; H311 — Toxic in contact with skin; H410 — Very toxic to aquatic life with long lasting effects.

What are the upstream and downstream products of Azinphos-ethyl?

For Azinphos-ethyl, Upstream Products: 3-(hydroxymethyl)-1,2,3-benzotriazin-4(3H)-one, 1,2,3-Benzotriazin-4(3H)-one, 3-(Chloromethyl)-1,2,3-benzotriazin-4(3H)-one.

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

Last updated:

How to cite: Jingsj. "Azinphos-ethyl (CAS 2642-71-9)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1331285-1 (accessed 2026-11-09).

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