Sodium ethyl xanthate

Also known as: Sodium ethylxanthogenate, Sodium O-ethyl dithiocarbonate, Ethylxanthic acid sodium salt, Sodium O-ethyl carbonodithioate, Carbonodithioic acid, O-ethyl ester, sodium salt

Sodium ethyl xanthate (CAS 140-90-9) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C3H5NaOS2 and a molecular weight of 144.191 g/mol. Key properties include a boiling point of 120.5ºC at 760 mmHg, a density of 1.558 and a flash point of 26.7ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 140-90-9
Jingsj CID: J-1504036-5
Molecular Formula: C₃H₅NaOS₂
Molecular Weight: 144.191 g/mol
Category: Organic Acids
Last updated: 8/21/2026

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Physicochemical Properties

Boiling Point	120.5ºC at 760 mmHg
Density	1.558
Flash Point	26.7ºC
Exact Mass	143.967957
PSA	66.62000
LogP	1.50530
Vapor Pressure	18.2mmHg at 25°C

Customs & Trade Information

HS Code	2930902000
Summary	2930902000. other dithiocarbonates (xanthates). VAT:17.0%. Tax rebate rate:13.0%. . MFN tariff:6.5%. General tariff:30.0%

Frequently Asked Questions

What is the CAS number of Sodium ethyl xanthate?

The CAS number of Sodium ethyl xanthate is 140-90-9.

What are the molecular formula and molecular weight of Sodium ethyl xanthate?

Sodium ethyl xanthate has molecular formula C3H5NaOS2 and molecular weight 144.191 g/mol.

What are the upstream and downstream products of Sodium ethyl xanthate?

For Sodium ethyl xanthate, Upstream Products: Carbon disulphide, Ethanol, Sodium ethoxide; Downstream Products: Dixanthogen, Sodium diethyldithiocarbamate, Diethyl disulfide.

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

Last updated: 8/21/2026

How to cite: Jingsj. "Sodium ethyl xanthate (CAS 140-90-9)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1504036-5 (accessed 2026-11-09).

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