Benzimidazole
Also known as: 1,3-benzodiazole, 1H-benzimidazole, 1H-benzo[d]imidazole, 1H-benzoimidazole, 3-azaindole, azindole, benziminazole, benzoimidazole, BZI, N,N'-methenyl-o-phenylenediamine, NSC 759
Benzimidazole (CAS 51-17-2) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C7H6N2 and a molecular weight of 118.136 g/mol. Key properties include a melting point of 169-171 °C(lit.), a boiling point of 360.0±11.0 °C at 760 mmHg, a density of 1.2±0.1 g/cm3 and a flash point of 208.4±5.7 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 51-17-2
- Jingsj CID
- J-1012095-8
- Molecular Formula
- C7H6N2
- Molecular Weight
- 118.136 g/mol
- Category
- Pharma Intermediates
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | 169-171 °C(lit.) |
|---|---|
| Boiling Point | 360.0±11.0 °C at 760 mmHg |
| Density | 1.2±0.1 g/cm3 |
| Flash Point | 208.4±5.7 °C |
| Exact Mass | 118.053101 |
| PSA | 28.68000 |
| LogP | 1.38 |
| Vapor Pressure | 0.0±0.8 mmHg at 25°C |
| Refractive Index | 1.697 |
| Stability | Stable. Combustible. Incompatible with strong oxidising agents. |
| Additional Property | sparingly soluble |
Activity & Biological Data
| Additional Information | [1]. V Yerragunta, et al. Benzimidazole Derivatives and Its Biological Importance: A Review, PharmaTutor, 2014, 2(3), 109-113. [2]. Fei F, et al. New substituted benzimidazole derivatives: a patent review (2010 - 2012). Expert Opin Ther Pat. 2013 Sep;23(9):1157-79. [3]. Wang M, et al. New substituted benzimidazole derivatives: a patent review (2013 - 2014). Expert Opin Ther Pat. 2015 May;25(5):595-612. |
|---|
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 Benzimidazole?
The CAS number of Benzimidazole is 51-17-2.
What are the molecular formula and molecular weight of Benzimidazole?
Benzimidazole has molecular formula C7H6N2 and molecular weight 118.136 g/mol.
What are the upstream and downstream products of Benzimidazole?
For Benzimidazole, Upstream Products: o-Phenylenediamine, Trimethyl orthoformate, Triethyl orthoformate; Downstream Products: 2-Benzoxazolinone, 6-Hydroxy-2-benzoxazolinone, 4,5,6,7-Tetrahydro-1H-benzimidazole.
Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "Benzimidazole (CAS 51-17-2)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1012095-8 (accessed 2026-11-06).
Data for reference only; verify product details with suppliers before purchase.