2,2'-Biimidazole

Also known as: 1H,1'H-2,2'-Biimidazole, 2,2'-Bi-1H-imidazole, 2,2'-Biimidazolyl, 2,2'-Bisimidazole, 2,2'-Diimidazole, 2-(1H-imidazol-2-yl)-1H-imidazole, bisimidazole

2,2'-Biimidazole (CAS 492-98-8) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C6H6N4 and a molecular weight of 134.139 g/mol. Key properties include a melting point of >350ºC, a boiling point of 455.5±28.0 °C at 760 mmHg, a density of 1.4±0.1 g/cm3 and a flash point of 238.1±17.0 °C. No supplier offers are currently listed; request a quote. Record last updated Nov 3, 2026.

CAS No.: 492-98-8
Jingsj CID: J-1343042-7
Molecular Formula: C₆H₆N₄
Molecular Weight: 134.139 g/mol
Category: Pharma Intermediates
Last updated: 11/3/2026

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Physicochemical Properties

Melting Point	>350ºC
Boiling Point	455.5±28.0 °C at 760 mmHg
Density	1.4±0.1 g/cm3
Flash Point	238.1±17.0 °C
Exact Mass	134.059250
PSA	57.36000
LogP	0.45
Vapor Pressure	0.0±1.1 mmHg at 25°C
Refractive Index	1.655

Customs & Trade Information

HS Code	2933290090
Summary	2933290090. other compounds containing an unfused imidazole ring (whether or not hydrogenated) in the structure. 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 2,2'-Biimidazole?

The CAS number of 2,2'-Biimidazole is 492-98-8.

What are the molecular formula and molecular weight of 2,2'-Biimidazole?

2,2'-Biimidazole has molecular formula C6H6N4 and molecular weight 134.139 g/mol.

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

Last updated: 11/3/2026

How to cite: Jingsj. "2,2'-Biimidazole (CAS 492-98-8)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1343042-7 (accessed 2026-11-06).

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