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O,S-Diethyl methylphosphonothioate

Also known as: O,S-Diethyl methylthiophosphonate, Methylphosphonothioic acid O,S-diethyl ester, O-Ethyl S-ethylmethylphosphonothioate, Phosphonothioic acid, P-methyl-, O,S-diethyl ester, 1-[ethylsulfanyl(methyl)phosphoryl]oxyethane, OSDMP, methyl-thiophosphonic acid O,S-diethyl ester, O,S-Diethyl methylphosphonothionate, O,S-Diethyl methyl phosphonothioate, lg61, MFCD01705977

O,S-Diethyl methylphosphonothioate (CAS 2511-10-6) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C5H13O2PS and a molecular weight of 168.19400 g/mol. Key properties include a boiling point of 208ºC at 760mmHg, a density of 1.081g/cm3 and a flash point of 79.6ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
2511-10-6
Jingsj CID
J-19851-6
Molecular Formula
C5H13O2PS
Molecular Weight
168.19400 g/mol
Category
Organic Acids
Last updated
8/21/2026
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Physicochemical Properties

Boiling Point208ºC at 760mmHg
Density1.081g/cm3
Flash Point79.6ºC
Exact Mass168.03700
PSA61.41000
LogP2.59890
Vapor Pressure0.315mmHg at 25°C
Refractive Index1.45

Frequently Asked Questions

What is the CAS number of O,S-Diethyl methylphosphonothioate?

The CAS number of O,S-Diethyl methylphosphonothioate is 2511-10-6.

What are the molecular formula and molecular weight of O,S-Diethyl methylphosphonothioate?

O,S-Diethyl methylphosphonothioate has molecular formula C5H13O2PS and molecular weight 168.19400 g/mol.

What are the upstream and downstream products of O,S-Diethyl methylphosphonothioate?

For O,S-Diethyl methylphosphonothioate, Upstream Products: Iodoethane, Ethanethiol, O,O-Diethyl methylphosphonothioate; Downstream Products: Ethanethiol, Diethyl disulfide, Ethyl dichlorophosphate.

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

Last updated:

How to cite: Jingsj. "O,S-Diethyl methylphosphonothioate (CAS 2511-10-6)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-19851-6 (accessed 2026-11-09).

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