4-Ethyl-4H-1,2,4-triazole-3-thiol

Also known as: 3H-1,2,4-Triazole-3-thione, 4-ethyl-2,4-dihydro-, 4-Ethyl-2,4-dihydro-3H-1,2,4-triazole-3-thione, 4-Aethyl-2,4-dihydro-[1,2,4]triazol-3-thion, 4-Ethyl-1,2,4-triazolin-5-thion, 4-ethyl-1H-1,2,4-triazole-5-thione

4-Ethyl-4H-1,2,4-triazole-3-thiol (CAS 27105-98-2) is a compound in the Alcohols category listed in the Jingsj chemical database. It has the molecular formula C4H7N3S and a molecular weight of 129.18300 g/mol. Key properties include a boiling point of 158ºC at 760mmHg, a density of 1.34g/cm3 and a flash point of 49.3ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 27105-98-2
Jingsj CID: J-1373249-5
Molecular Formula: C₄H₇N₃S
Molecular Weight: 129.18300 g/mol
Category: Alcohols
Last updated: 8/21/2026

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Physicochemical Properties

Boiling Point	158ºC at 760mmHg
Density	1.34g/cm3
Flash Point	49.3ºC
Exact Mass	129.03600
PSA	65.70000
LogP	0.96060
Vapor Pressure	2.69mmHg at 25°C
Refractive Index	1.663
Storage Conditions	2-8°C

Customs & Trade Information

HS Code	2933990090
Summary	2933990090. heterocyclic compounds with nitrogen hetero-atom(s) only. VAT:17.0%. Tax rebate rate:13.0%. . MFN tariff:6.5%. General tariff:20.0%

Frequently Asked Questions

What is the CAS number of 4-Ethyl-4H-1,2,4-triazole-3-thiol?

The CAS number of 4-Ethyl-4H-1,2,4-triazole-3-thiol is 27105-98-2.

What are the molecular formula and molecular weight of 4-Ethyl-4H-1,2,4-triazole-3-thiol?

4-Ethyl-4H-1,2,4-triazole-3-thiol has molecular formula C4H7N3S and molecular weight 129.18300 g/mol.

What are the upstream and downstream products of 4-Ethyl-4H-1,2,4-triazole-3-thiol?

For 4-Ethyl-4H-1,2,4-triazole-3-thiol, Upstream Products: Formylhydrazine.

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. "4-Ethyl-4H-1,2,4-triazole-3-thiol (CAS 27105-98-2)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1373249-5 (accessed 2026-11-09).

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