4-Phenoxybenzoic acid
4-Phenoxybenzoic acid (CAS: 2215-77-2), a carboxylic acid derivative with the molecular formula C<sub>6</sub>H<sub>5</sub>OC<sub>6</sub>H<sub>4</sub>CO<sub>2</sub>H and a molecular weight of 214.22 g/mol, is a valuable organic building block. It is characterised by a phenoxy group attached to a benzoic acid moiety. This compound finds utility in various chemical synthesis pathways, particularly in the development of advanced materials and complex organic molecules.

Organic Synthesis Intermediate
4-Phenoxybenzoic acid serves as a key intermediate in the synthesis of diverse organic compounds. Its structure allows for further functionalisation, making it useful in the creation of pharmaceuticals and agrochemicals.
Polymer Science
This compound can be incorporated into polymer backbones or used as a monomer precursor. It contributes to the development of high-performance polymers with tailored thermal and mechanical properties.
Material Science Research
Researchers utilise 4-Phenoxybenzoic acid in the exploration of novel materials. Its unique structure can influence the properties of liquid crystals, dyes, and other functional materials.
| Molecular weight | 214.22 |
|---|---|
| Linear formula | C6H5OC6H4CO2H |
| Assay | 97% |
| Melting point | 163-165 °C(lit.) |

Hazard statements
- H315Causes skin irritation
- H319Causes serious eye irritation
- H335May cause respiratory irritation
Precautionary statements
- P261Avoid breathing dust, fume, gas or vapours
- P305IF IN EYES
| Protective equipment | dust mask type N95 (US), Eyeshields, Gloves |
|---|---|
| Water hazard class (WGK, DE) | 3 |
| Hazard codes (EU) | Xi |
| Risk statements (R) | 36/37/38 |
| Safety statements (S) | 26-37/39 |
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-Phenoxybenzoic acid used for?
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4-Phenoxybenzoic acid is primarily used as a building block in organic synthesis for pharmaceuticals, agrochemicals, and advanced materials. It also finds applications in polymer science and material science research.
What are the CAS number and formula for 4-Phenoxybenzoic acid?
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The CAS number for 4-Phenoxybenzoic acid is 2215-77-2, and its molecular formula is C<sub>6</sub>H<sub>5</sub>OC<sub>6</sub>H<sub>4</sub>CO<sub>2</sub>H.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies 4-Phenoxybenzoic acid with a minimum assay of 97%. This product is supplied for research and technical purposes and is not represented as USP, BP, EP, or other pharmacopoeia grades.
How should 4-Phenoxybenzoic acid be handled safely?
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4-Phenoxybenzoic acid is classified as an irritant. Handle with appropriate personal protective equipment, including a dust mask (type N95 US), eyeshields, and gloves. Avoid breathing dust and ensure adequate ventilation. It is recommended to consult the Safety Data Sheet (SDS) for detailed handling instructions.
How is 4-Phenoxybenzoic acid packed, shipped, and exported?
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Tech Serve Solutions professionally packs, ships, and exports 4-Phenoxybenzoic acid in compliance with all relevant regulations to ensure safe and timely delivery worldwide.
How can I request a sample or quote for 4-Phenoxybenzoic acid?
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To request a sample or a quote for 4-Phenoxybenzoic acid, please contact our sales department through the website or by email, providing your specific requirements.
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