4-Amino-5-ethyl-4H-1,2,4-triazole-3-thiol
4-氨基-5-乙基-4H-1,2,4-三唑-3-硫醇
Also known as: 4-Amino-5-ethyl-3-mercapto-4H-1,2,4-triazole, 4-Amino-5-ethyl-4H-[1,2,4]triazole-3-thiol, 3H-1,2,4-Triazole-3-thione, 4-amino-5-ethyl-2,4-dihydro-, 4-Amino-5-ethyl-3-mercapto-1,2,4-triazole, 4-Amino-5-ethyl-1,2,4-triazole-3-thiol, 3-Mercapto-4-amino-5-ethyl-1,2,4-triazole
4-Amino-5-ethyl-4H-1,2,4-triazole-3-thiol (CAS 20939-16-6) is a compound in the Alcohols category listed in the Jingsj chemical database. It has the molecular formula C4H8N4S and a molecular weight of 144.19800 g/mol. It is also known as 4-Amino-5-ethyl-3-mercapto-4H-1,2,4-triazole, 4-Amino-5-ethyl-4H-[1,2,4]triazole-3-thiol and 3H-1,2,4-Triazole-3-thione, 4-amino-5-ethyl-2,4-dihydro-. Key properties include a melting point of 184ºC, a boiling point of 213.7ºC at 760 mmHg, a density of 1.55g/cm3 and a flash point of 83ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 20939-16-6
- Jingsj CID
- J-1161838-8
- Molecular Formula
- C4H8N4S
- Chinese Name
- 4-氨基-5-乙基-4H-1,2,4-三唑-3-硫醇
- Molecular Weight
- 144.19800 g/mol
- Category
- Alcohols
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | 184ºC |
|---|---|
| Boiling Point | 213.7ºC at 760 mmHg |
| Density | 1.55g/cm3 |
| Flash Point | 83ºC |
| Exact Mass | 144.04700 |
| PSA | 91.72000 |
| LogP | 0.79810 |
| Vapor Pressure | 0.162mmHg at 25°C |
| Refractive Index | 1.741 |
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-Amino-5-ethyl-4H-1,2,4-triazole-3-thiol?
The CAS number of 4-Amino-5-ethyl-4H-1,2,4-triazole-3-thiol is 20939-16-6.
What are the molecular formula and molecular weight of 4-Amino-5-ethyl-4H-1,2,4-triazole-3-thiol?
4-Amino-5-ethyl-4H-1,2,4-triazole-3-thiol has molecular formula C4H8N4S and molecular weight 144.19800 g/mol.
What are the upstream and downstream products of 4-Amino-5-ethyl-4H-1,2,4-triazole-3-thiol?
For 4-Amino-5-ethyl-4H-1,2,4-triazole-3-thiol, Upstream Products: Thiocarbohydrazide; Downstream Products: 5-Ethyl-1,2-dihydro-1,2,4-triazole-3-thione, 3-Ethyl[1,2,4]triazolo[3,4-b][1,3,4]thiadiazol-6-amine.
Data compiled from public chemical databases and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "4-Amino-5-ethyl-4H-1,2,4-triazole-3-thiol (CAS 20939-16-6)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1161838-8 (accessed 2026-10-28).
Data for reference only; verify specifications, grades and regulatory status with suppliers before purchase.