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ethion

Also known as: O,O,O',O'-tetraethyl S,S'-methylene bis(dithiophosphate), S,S'-methylene bis(O,O-diethyl phosphorodithioate), O,O,O',O'-tetraethyl S,S'-methanediyl bis(phosphorodithioate), bis-diethoxythiophosphorylsulfanyl-methane, Bis(dithiophosphate) de O,O,O',O'-tétraéthyle et de S,S'-méthylène, ETHIOL, Ethanox, Ethodan, Ethopaz, Etilon, Itopaz, Kwit, rp8167

ethion (CAS 563-12-2) is a compound in the Organic Compounds category listed in the Jingsj chemical database. It has the molecular formula C9H22O4P2S4 and a molecular weight of 384.476 g/mol. Key properties include a melting point of 3ºC, a boiling point of 401.2±55.0 °C at 760 mmHg, a density of 1.3±0.1 g/cm3 and a flash point of 196.5±31.5 °C. It is classified under GHS with signal word Danger and hazard statements H301 — Toxic if swallowed, H312 — Harmful 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.
563-12-2
Jingsj CID
J-1325002-7
Molecular Formula
C9H22O4P2S4
Molecular Weight
384.476 g/mol
Category
Organic Compounds
Last updated
8/21/2026

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Physicochemical Properties

Melting Point3ºC
Boiling Point401.2±55.0 °C at 760 mmHg
Density1.3±0.1 g/cm3
Flash Point196.5±31.5 °C
Exact Mass383.987610
PSA171.32000
LogP5.07
Vapor Pressure0.0±0.9 mmHg at 25°C
Refractive Index1.558

GHS Safety & Compliance

Acute Toxicity / Environmental HazardSignal word: Danger
  • H301 — Toxic if swallowed
  • H312 — Harmful in contact with skin
  • H410 — Very toxic to aquatic life with long lasting effects

Frequently Asked Questions

What is the CAS number of ethion?

The CAS number of ethion is 563-12-2.

What are the molecular formula and molecular weight of ethion?

ethion has molecular formula C9H22O4P2S4 and molecular weight 384.476 g/mol.

Is ethion hazardous?

ethion has GHS signal word Danger and hazard statements H301 — Toxic if swallowed; H312 — Harmful in contact with skin; H410 — Very toxic to aquatic life with long lasting effects.

What are the upstream and downstream products of ethion?

For ethion, Upstream Products: Diazomethane, Dichloromethane, Ammonium O,O-diethyldithiophosphate.

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

Last updated:

How to cite: Jingsj. "ethion (CAS 563-12-2)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1325002-7 (accessed 2026-11-09).

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