3-(Ethylthio)-1H-1,2,4-triazol-5-amine

Also known as: 5-(Ethylthio)-1H-1,2,4-triazol-3-amine, 3-ethylsulfanyl-1H-1,2,4-triazol-5-amine, 5-amino-3-ethylthio-1H-1,2,4-triazole, 5-(ethylthio)-2H-1,2,4-triazol-3-amine, 3-(Ethylthio)-1,2,4-triazol-5-amine, AKOS A1231-1382, ASISCHEM C39063

3-(Ethylthio)-1H-1,2,4-triazol-5-amine (CAS 51420-35-0) is a compound in the Organic Bases category listed in the Jingsj chemical database. It has the molecular formula C4H8N4S and a molecular weight of 144.19800 g/mol. Key properties include a boiling point of 383.5ºC at 760 mmHg, a density of 1.36g/cm3 and a flash point of 185.7ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 51420-35-0
Jingsj CID: J-858996-6
Molecular Formula: C₄H₈N₄S
Molecular Weight: 144.19800 g/mol
Category: Organic Bases
Last updated: 8/21/2026

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Physicochemical Properties

Boiling Point	383.5ºC at 760 mmHg
Density	1.36g/cm3
Flash Point	185.7ºC
Exact Mass	144.04700
PSA	92.89000
LogP	1.08010
Refractive Index	1.622

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-(Ethylthio)-1H-1,2,4-triazol-5-amine?

The CAS number of 3-(Ethylthio)-1H-1,2,4-triazol-5-amine is 51420-35-0.

What are the molecular formula and molecular weight of 3-(Ethylthio)-1H-1,2,4-triazol-5-amine?

3-(Ethylthio)-1H-1,2,4-triazol-5-amine has molecular formula C4H8N4S and molecular weight 144.19800 g/mol.

What are the upstream and downstream products of 3-(Ethylthio)-1H-1,2,4-triazol-5-amine?

For 3-(Ethylthio)-1H-1,2,4-triazol-5-amine, Upstream Products: 3-Amino-5-mercapto-1,2,4-triazole; Downstream Products: Methyl N,N-dimethyldithiocarbamate.

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-(Ethylthio)-1H-1,2,4-triazol-5-amine (CAS 51420-35-0)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-858996-6 (accessed 2026-11-09).

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