4-Bromocatechol

Also known as: 4-bromopyrocatechol, 4-bromobenzene-1,2-diol, 4-Bromo-1,2-benzenediol, 4-Bromo-1,2-dihydroxybenzene, 3,4-Dihydroxybromobenzene, 1,2-Benzenediol, 4-bromo-, p-Bromocatechol

4-Bromocatechol (CAS 17345-77-6) is a compound in the Alcohols category listed in the Jingsj chemical database. It has the molecular formula C6H5BrO2 and a molecular weight of 189.007 g/mol. Key properties include a melting point of 87ºC, a boiling point of 280.5±20.0 °C at 760 mmHg, a density of 1.8±0.1 g/cm3 and a flash point of 123.5±21.8 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 17345-77-6
Jingsj CID: J-20050-0
Molecular Formula: C₆H₅BrO₂
Molecular Weight: 189.007 g/mol
Category: Alcohols
Last updated: 8/21/2026

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Physicochemical Properties

Melting Point	87ºC
Boiling Point	280.5±20.0 °C at 760 mmHg
Density	1.8±0.1 g/cm3
Flash Point	123.5±21.8 °C
Exact Mass	187.947281
PSA	40.46000
LogP	2.26
Vapor Pressure	0.0±0.6 mmHg at 25°C
Refractive Index	1.657

Customs & Trade Information

HS Code	2908199090
Summary	HS: 2908199090. derivatives of polyphenols or phenol-alcohols containing only halogen substituents and their salts. VAT:17.0%. tax rebate rate:9.0%. supervision conditions:None. MFN tariff:5.5%. general tariff:30.0%

Frequently Asked Questions

What is the CAS number of 4-Bromocatechol?

The CAS number of 4-Bromocatechol is 17345-77-6.

What are the molecular formula and molecular weight of 4-Bromocatechol?

4-Bromocatechol has molecular formula C6H5BrO2 and molecular weight 189.007 g/mol.

What are the upstream and downstream products of 4-Bromocatechol?

For 4-Bromocatechol, Upstream Products: Catechol, 4-Bromoveratrole, 5-Bromosalicylaldehyde; Downstream Products: 5-Bromo-2,2-dimethyl-1,3-benzodioxole, 1,2-Bis(benzyloxy)-4-bromobenzene.

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

Last updated: 8/21/2026

How to cite: Jingsj. "4-Bromocatechol (CAS 17345-77-6)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-20050-0 (accessed 2026-11-09).

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