3-Amino-5-mercapto-1,2,4-triazole
Also known as: 5-Amino-4H-1,2,4-triazole-3-thiol, 3-Amino-1,2,4-triazole-5-thiol, 5-Amino-1H-1,2,4-triazole-3-thiol, 5-Amino-1,2-dihydro-3H-1,2,4-triazole-3-thione, 3-Imino-5-thiourazole, iminothiourazole, 5-Mercapto-3-amino-1,2,4-triazole, 3-Amino-5-sulfanyl-1,2,4-triazole, MFCD00005231, EINECS 240-735-6
3-Amino-5-mercapto-1,2,4-triazole (CAS 16691-43-3) is a compound in the Organic Compounds category listed in the Jingsj chemical database. It has the molecular formula C2H4N4S and a molecular weight of 116.145 g/mol. Key properties include a melting point of >300 °C(lit.), a boiling point of 389.1±25.0 °C at 760 mmHg, a density of 1.7±0.1 g/cm3 and a flash point of 189.1±23.2 °C. No supplier offers are currently listed; request a quote. Record last updated Nov 3, 2026.
- CAS No.
- 16691-43-3
- Jingsj CID
- J-1990714-3
- Molecular Formula
- C2H4N4S
- Molecular Weight
- 116.145 g/mol
- Category
- Organic Compounds
- Last updated
- 11/3/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | >300 °C(lit.) |
|---|---|
| Boiling Point | 389.1±25.0 °C at 760 mmHg |
| Density | 1.7±0.1 g/cm3 |
| Flash Point | 189.1±23.2 °C |
| Exact Mass | 116.015663 |
| PSA | 106.39000 |
| LogP | -0.08 |
| Vapor Pressure | 0.0±0.9 mmHg at 25°C |
| Refractive Index | 1.791 |
| Additional Property | SOLUBLE IN HOT WATER |
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-Amino-5-mercapto-1,2,4-triazole?
The CAS number of 3-Amino-5-mercapto-1,2,4-triazole is 16691-43-3.
What are the molecular formula and molecular weight of 3-Amino-5-mercapto-1,2,4-triazole?
3-Amino-5-mercapto-1,2,4-triazole has molecular formula C2H4N4S and molecular weight 116.145 g/mol.
What are the upstream and downstream products of 3-Amino-5-mercapto-1,2,4-triazole?
For 3-Amino-5-mercapto-1,2,4-triazole, Upstream Products: Hydrazodicarbothioamide; Downstream Products: 5,7-Dimethyl-[1,2,4]triazolo[1,5-a]pyrimidine-2-thiol, 3-[(4-chlorobenzyl)sulfanyl]-1H-1,2,4-triazol-5-amine, 3-Amino-5-methylthio-1H-1,2,4-triazole.
Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "3-Amino-5-mercapto-1,2,4-triazole (CAS 16691-43-3)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1990714-3 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.