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5-(Methylamino)-1,3,4-thiadiazole-2-thiol

Also known as: 5-Methylamino-[1,3,4]thiadiazole-2-thiol, 2-Mercapto-5-methylamino-1,3,4-thiadiazole, 2-Methylamino-5-mercapto-1,3,4-thiadiazole, 5-(Methylamino)-1,3,4-thiadiazole-2(3H)-thione, 5-Methylamino-3H-1,3,4-thiadiazole-2-thione, 1,3,4-Thiadiazole-2(3H)-thione, 5-(methylamino)-, 5-Mercapto-2-methylamino-1,3,4-thiadiazole

5-(Methylamino)-1,3,4-thiadiazole-2-thiol (CAS 27386-01-2) is a compound in the Alcohols category listed in the Jingsj chemical database. It has the molecular formula C3H5N3S2 and a molecular weight of 147.22400 g/mol. Key properties include a melting point of 190ºC, a boiling point of 483.6±45.0 °C at 760 mmHg, a density of 1.2±0.1 g/cm3 and a flash point of 246.2±28.7 °C. No supplier offers are currently listed; request a quote. Record last updated Nov 2, 2026.

CAS No.
27386-01-2
Jingsj CID
J-1750298-6
Molecular Formula
C3H5N3S2
Molecular Weight
147.22400 g/mol
Category
Alcohols
Last updated
11/2/2026

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Physicochemical Properties

Melting Point190ºC
Boiling Point483.6±45.0 °C at 760 mmHg
Density1.2±0.1 g/cm3
Flash Point246.2±28.7 °C
Exact Mass258.173218
PSA104.85000
LogP3.45
Vapor Pressure0.0±1.3 mmHg at 25°C
Refractive Index1.622

Customs & Trade Information

HS Code2934999090
Summary2934999090. other heterocyclic compounds. 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 5-(Methylamino)-1,3,4-thiadiazole-2-thiol?

The CAS number of 5-(Methylamino)-1,3,4-thiadiazole-2-thiol is 27386-01-2.

What are the molecular formula and molecular weight of 5-(Methylamino)-1,3,4-thiadiazole-2-thiol?

5-(Methylamino)-1,3,4-thiadiazole-2-thiol has molecular formula C3H5N3S2 and molecular weight 147.22400 g/mol.

What are the upstream and downstream products of 5-(Methylamino)-1,3,4-thiadiazole-2-thiol?

For 5-(Methylamino)-1,3,4-thiadiazole-2-thiol, Upstream Products: Potassium ethylxanthate, 4-Methylthiosemicarbazide, Carbon disulphide.

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

Last updated:

How to cite: Jingsj. "5-(Methylamino)-1,3,4-thiadiazole-2-thiol (CAS 27386-01-2)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1750298-6 (accessed 2026-11-09).

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