2,5-Diphenyl-1,3,4-thiadiazole

2,5-二苯基-1,3,4-噻二唑

Also known as: 1,3,4-Thiadiazole, 2,5-diphenyl-, 2,5-Diphenylthiadiazole, 2,5-Difenil-1,3,4-tiadiazolo, Diphenyl-[1,3,4]thiadiazole, L 1540

2,5-Diphenyl-1,3,4-thiadiazole (CAS 1456-21-9) is a compound in the Aromatic Hydrocarbons category listed in the Jingsj chemical database. It has the molecular formula C14H10N2S and a molecular weight of 238.30800 g/mol. It is also known as 1,3,4-Thiadiazole, 2,5-diphenyl-, 2,5-Diphenylthiadiazole and 2,5-Difenil-1,3,4-tiadiazolo. Key properties include a boiling point of 403.1ºC at 760 mmHg, a density of 1.216g/cm3 and a flash point of 189.2ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 1456-21-9
Jingsj CID: J-1035099-7
Molecular Formula: C₁₄H₁₀N₂S
Chinese Name: 2,5-二苯基-1,3,4-噻二唑
Molecular Weight: 238.30800 g/mol
Category: Aromatic Hydrocarbons
Last updated: 8/21/2026

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Physicochemical Properties

Boiling Point	403.1ºC at 760 mmHg
Density	1.216g/cm3
Flash Point	189.2ºC
Exact Mass	238.05600
PSA	54.02000
LogP	3.87210
Vapor Pressure	2.44E-06mmHg at 25°C
Refractive Index	1.633

Customs & Trade Information

HS Code	2934999090
Summary	2934999090. 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 2,5-Diphenyl-1,3,4-thiadiazole?

The CAS number of 2,5-Diphenyl-1,3,4-thiadiazole is 1456-21-9.

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

2,5-Diphenyl-1,3,4-thiadiazole has molecular formula C14H10N2S and molecular weight 238.30800 g/mol.

What are the upstream and downstream products of 2,5-Diphenyl-1,3,4-thiadiazole?

For 2,5-Diphenyl-1,3,4-thiadiazole, Upstream Products: Benzaldehyde, 2,5-Diphenyl-1,3,4-oxadiazole, Iodobenzene.

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

Last updated: 8/21/2026

How to cite: Jingsj. "2,5-Diphenyl-1,3,4-thiadiazole (CAS 1456-21-9)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1035099-7 (accessed 2026-10-28).

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