2-Phenylbenzimidazole-5-sulfonic acid
Also known as: Ensulizole, Phenylbenzimidazole sulfonic acid, PBSA, Eusolex 232, Parsol HS, Neo Heliopan Hydro, Novantisol, 2-Phenyl-5-benzimidazolesulfonic acid, 2-Phenyl-1H-benzimidazole-5-sulphonic acid, Ultraviolet absorbent UV-T
2-Phenylbenzimidazole-5-sulfonic acid (CAS 27503-81-7) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C13H10N2O3S and a molecular weight of 274.295 g/mol. Key properties include a melting point of 300 °C, a density of 1.5±0.1 g/cm3 and a flash point of >100ºC. No supplier offers are currently listed; request a quote. Record last updated Nov 3, 2026.
- CAS No.
- 27503-81-7
- Jingsj CID
- J-32865-4
- Molecular Formula
- C13H10N2O3S
- Molecular Weight
- 274.295 g/mol
- Category
- Pharma Intermediates
- Last updated
- 11/3/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | 300 °C |
|---|---|
| Density | 1.5±0.1 g/cm3 |
| Flash Point | >100ºC |
| Exact Mass | 274.041199 |
| PSA | 91.43000 |
| LogP | 1.50 |
| Refractive Index | 1.704 |
| Additional Property | soluble |
Activity & Biological Data
| Additional Information | [1]. Abdelraheem WH, et al. Degradation and mineralization of organic UV absorber compound 2-phenylbenzimidazole-5-sulfonic acid (PBSA) using UV-254nm/H2O2. J Hazard Mater. 2015 Jan 23;282:233-40. |
|---|
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 2-Phenylbenzimidazole-5-sulfonic acid?
The CAS number of 2-Phenylbenzimidazole-5-sulfonic acid is 27503-81-7.
What are the molecular formula and molecular weight of 2-Phenylbenzimidazole-5-sulfonic acid?
2-Phenylbenzimidazole-5-sulfonic acid has molecular formula C13H10N2O3S and molecular weight 274.295 g/mol.
What are the upstream and downstream products of 2-Phenylbenzimidazole-5-sulfonic acid?
For 2-Phenylbenzimidazole-5-sulfonic acid, Upstream Products: 3,4-Diaminobenzenesulfonic acid, benzoic acid, Methyl benzoate; Downstream Products: 2-phenyl-1H-benzimidazole-5-sulfonyl chloride.
Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "2-Phenylbenzimidazole-5-sulfonic acid (CAS 27503-81-7)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-32865-4 (accessed 2026-11-07).
Data for reference only; verify product details with suppliers before purchase.