2-Bromo-5-chlorobenzoic acid
2-Bromo-5-chlorobenzoic acid (CAS: 21739-93-5), with the molecular formula BrC6H3(Cl)CO2H and a molecular weight of 235.46 g/mol, is a halogenated aromatic carboxylic acid. It serves as a valuable building block and intermediate in organic synthesis. This compound is typically utilised in the development of new chemical entities and materials, finding applications in research and chemical manufacturing laboratories.

Organic Synthesis Intermediate
Utilised as a key intermediate in the synthesis of more complex organic molecules. Its structure allows for various functionalisation reactions.
Pharmaceutical Research
Serves as a building block in the exploration and development of novel pharmaceutical compounds. Its halogenated aromatic structure is a common motif in drug discovery.
Materials Science
Can be employed in the synthesis of specialised materials where its specific chemical properties are advantageous. This includes polymers and functional organic materials.
Chemical Research and Development
A versatile reagent for academic and industrial research laboratories engaged in developing new synthetic methodologies or target molecules.
| Molecular weight | 235.46 |
|---|---|
| Linear formula | BrC6H3(Cl)CO2H |
| Assay | 96% |
| Melting point | 153-157 °C |


Hazard statements
- H301Toxic if swallowed
- H400Very toxic to aquatic life
Precautionary statements
- P273Avoid release to the environment
- P301IF SWALLOWED
| Protective equipment | dust mask type N95 (US), Eyeshields, Faceshields, Gloves |
|---|---|
| Transport (UN / ADR) | UN 2811 6.1/PG 3 |
| Water hazard class (WGK, DE) | 3 |
| Hazard codes (EU) | Xn,N |
| Risk statements (R) | 22-50/53 |
| Safety statements (S) | 60-61 |
Hazard information is provided for guidance. Always consult the product Safety Data Sheet (SDS), available on request, before handling.
Documentation
Every batch ships with a Certificate of Analysis covering assay, identity and purity; the grade is confirmed against your enquiry. Safety Data Sheets and technical data sheets are available on request.
Supply & logistics
Samples for technical evaluation; bulk MOQ by grade and packaging. In-stock material ships in 7–10 working days, worldwide, with full export documentation.
What is 2-Bromo-5-chlorobenzoic acid used for?
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2-Bromo-5-chlorobenzoic acid is primarily used as a building block and intermediate in organic synthesis, particularly in pharmaceutical research and materials science.
What is the CAS number and molecular formula for 2-Bromo-5-chlorobenzoic acid?
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The CAS number is 21739-93-5, and the molecular formula is BrC6H3(Cl)CO2H.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies 2-Bromo-5-chlorobenzoic acid with a minimum purity of 96%. This product is intended for research and chemical synthesis purposes and is not supplied as USP, BP, EP, or pharmaceutical grade.
How should 2-Bromo-5-chlorobenzoic acid be handled safely?
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2-Bromo-5-chlorobenzoic acid is classified as toxic if swallowed and very toxic to aquatic life. Handle with appropriate personal protective equipment, including a dust mask (type N95 US), eyeshields, face shields, and gloves. Avoid release into the environment. Ensure adequate ventilation.
Is 2-Bromo-5-chlorobenzoic acid a controlled substance?
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The provided data does not indicate that 2-Bromo-5-chlorobenzoic acid is a controlled substance.
How is 2-Bromo-5-chlorobenzoic acid typically packed and shipped?
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Tech Serve Solutions exports chemicals globally. Specific packaging details for 2-Bromo-5-chlorobenzoic acid will be provided upon request, adhering to all relevant shipping regulations for its hazard classification (UN 2811, 6.1/PG 3).
How can I request a sample or quote for 2-Bromo-5-chlorobenzoic acid?
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To request a sample or quote for 2-Bromo-5-chlorobenzoic acid, please contact our sales team through the website or by phone, providing your specific requirements and shipping details.
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