2-Amino-5-methyl-1,3,4-thiadiazole

2-氨基-5-甲基-1,3,4-噻二唑

Also known as: 5-Methyl-1,3,4-thiadiazol-2-amine, 5-Methyl-2-amino-1,3,4-thiadiazole, 1,3,4-Thiadiazole, 2-amino-5-methyl-, EINECS 203-573-7, MFCD00003110

2-Amino-5-methyl-1,3,4-thiadiazole (CAS 108-33-8) is a compound in the Organic Compounds category listed in the Jingsj chemical database. It has the molecular formula C3H5N3S and a molecular weight of 115.15700 g/mol. It is also known as 5-Methyl-1,3,4-thiadiazol-2-amine, 5-Methyl-2-amino-1,3,4-thiadiazole and 1,3,4-Thiadiazole, 2-amino-5-methyl-. Key properties include a melting point of 224-225 °C, a boiling point of 261.2ºC at 760 mmHg, a density of 1.372 g/cm3 and a flash point of 111.8ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
108-33-8
Jingsj CID
J-31952-0
Molecular Formula
C3H5N3S
Chinese Name
2-氨基-5-甲基-1,3,4-噻二唑
Molecular Weight
115.15700 g/mol
Category
Organic Compounds
Last updated
8/21/2026

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Physicochemical Properties

Melting Point224-225 °C
Boiling Point261.2ºC at 760 mmHg
Density1.372 g/cm3
Flash Point111.8ºC

Frequently Asked Questions

What is the CAS number of 2-Amino-5-methyl-1,3,4-thiadiazole?

The CAS number of 2-Amino-5-methyl-1,3,4-thiadiazole is 108-33-8.

What are the molecular formula and molecular weight of 2-Amino-5-methyl-1,3,4-thiadiazole?

2-Amino-5-methyl-1,3,4-thiadiazole has molecular formula C3H5N3S and molecular weight 115.15700 g/mol.

Data compiled from public chemical databases and supplier catalogs; supplier offers are provided by suppliers.

Last updated:

How to cite: Jingsj. "2-Amino-5-methyl-1,3,4-thiadiazole (CAS 108-33-8)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-31952-0 (accessed 2026-10-22).

Data for reference only; verify specifications, grades and regulatory status with suppliers before purchase.