3,4-Dimethyl-1H-1,2,4-triazole-5(4H)-thione

Also known as: 4,5-Dimethyl-4H-1,2,4-triazole-3-thiol, 2,4-Dihydro-4,5-dimethyl-3H-1,2,4-triazole-3-thione, 3,4-Dimethyl-1,2,4-triazole-5-thiol, 3H-1,2,4-Triazole-3-thione,2,4-dihydro-4,5-dimethyl-, 4,5-Dimethyl-1,2,4-triazole-3-thiol, EINECS 254-202-0

3,4-Dimethyl-1H-1,2,4-triazole-5(4H)-thione (CAS 38942-50-6) is a compound in the Ketones 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 150.5ºC at 760 mmHg, a density of 1.35 g/cm3 and a flash point of 44.8ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 38942-50-6
Jingsj CID: J-1519877-3
Molecular Formula: C₄H₇N₃S
Molecular Weight: 129.18300 g/mol
Category: Ketones
Last updated: 8/21/2026

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Physicochemical Properties

Boiling Point	150.5ºC at 760 mmHg
Density	1.35 g/cm3
Flash Point	44.8ºC
Exact Mass	129.03600
PSA	65.70000
LogP	0.78610
Refractive Index	1.667

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 3,4-Dimethyl-1H-1,2,4-triazole-5(4H)-thione?

The CAS number of 3,4-Dimethyl-1H-1,2,4-triazole-5(4H)-thione is 38942-50-6.

What are the molecular formula and molecular weight of 3,4-Dimethyl-1H-1,2,4-triazole-5(4H)-thione?

3,4-Dimethyl-1H-1,2,4-triazole-5(4H)-thione has molecular formula C4H7N3S and molecular weight 129.18300 g/mol.

What are the upstream and downstream products of 3,4-Dimethyl-1H-1,2,4-triazole-5(4H)-thione?

For 3,4-Dimethyl-1H-1,2,4-triazole-5(4H)-thione, Upstream Products: acetic acid, 4-Methylthiosemicarbazide, Acethydrazide.

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. "3,4-Dimethyl-1H-1,2,4-triazole-5(4H)-thione (CAS 38942-50-6)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1519877-3 (accessed 2026-11-09).

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