4-Bromobenzoic acid
4-Bromobenzoic acid (CAS: 586-76-5, Formula: BrC6H4CO2H, MW: 201.02) is a white to off-white crystalline solid. This versatile organic compound serves as a crucial building block in chemical synthesis, particularly in the pharmaceutical and agrochemical industries. It is widely utilised as an intermediate for the preparation of more complex organic molecules and speciality chemicals. Its structure, featuring both a carboxylic acid group and a bromine atom on a benzene ring, allows for diverse chemical transformations.

Pharmaceutical Intermediate
4-Bromobenzoic acid is employed in the synthesis of active pharmaceutical ingredients (APIs). Its reactive bromine atom and carboxylic acid functionality facilitate its incorporation into various drug molecules and complex organic structures.
Organic Synthesis Building Block
This compound is a valuable reagent in organic chemistry laboratories for constructing a wide array of carbon-based molecules. It is frequently used in cross-coupling reactions and as a precursor for functionalised aromatic compounds.
Agrochemical Development
It serves as an intermediate in the development of new pesticides and herbicides. The bromine substituent can be a key feature in the biological activity of certain agrochemical products.
Material Science Research
4-Bromobenzoic acid can be utilised in the synthesis of polymers and other advanced materials where its specific chemical properties are advantageous.
| Molecular weight | 201.02 |
|---|---|
| Linear formula | BrC6H4CO2H |
| Assay | 98% |
| Grade | Vetec™ reagent grade |
| Melting point | 252-254 °C(lit.) |

Hazard statements
- H302Harmful if swallowed
- H315Causes skin irritation
- H319Causes serious eye irritation
- H335May cause respiratory irritation
Precautionary statements
- P261Avoid breathing dust, fume, gas or vapours
- P305IF IN EYES
| Water hazard class (WGK, DE) | 3 |
|---|---|
| Hazard codes (EU) | Xn |
| Risk statements (R) | 22-36/37/38 |
| Safety statements (S) | 26-36 |
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 4-Bromobenzoic acid used for?
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4-Bromobenzoic acid is primarily used as a building block in organic synthesis, particularly as an intermediate in the development of pharmaceuticals, agrochemicals, and speciality chemicals.
What is the CAS number and chemical formula for 4-Bromobenzoic acid?
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The CAS number for 4-Bromobenzoic acid is 586-76-5, and its chemical formula is BrC6H4CO2H.
What grade and purity does Tech Serve Solutions supply for 4-Bromobenzoic acid?
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Tech Serve Solutions supplies 4-Bromobenzoic acid in Vetec™ reagent grade with an assay of 98%. We do not represent this product as USP, BP, or EP grade.
How should 4-Bromobenzoic acid be handled and stored?
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Handle 4-Bromobenzoic acid with appropriate personal protective equipment, avoiding contact with skin, eyes, and clothing, and preventing inhalation of dust. It is classified as harmful if swallowed and causes skin, eye, and respiratory irritation. Store in a well-ventilated area.
Is 4-Bromobenzoic acid a controlled substance?
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Based on the provided data, 4-Bromobenzoic acid is not listed as a controlled substance. However, users should always verify local regulations.
How is 4-Bromobenzoic acid packed, shipped, and exported by TSS?
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4-Bromobenzoic acid is available in various packaging sizes suitable for laboratory and industrial use. Tech Serve Solutions exports chemicals globally, adhering to international shipping regulations.
How can I request a quote or sample of 4-Bromobenzoic acid?
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To request a quote or sample, please contact our sales team through the website or by phone, providing the product name and CAS number.
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