4-Pentylbenzoic acid
4-Pentylbenzoic acid (CAS 26311-45-5) is an organic compound with the molecular formula CH3(CH2)4C6H4CO2H and a molecular weight of 192.25 g/mol. This aromatic carboxylic acid serves as a valuable building block in organic synthesis. It finds application in materials science, particularly in the development of liquid crystals and organic electronic materials due to its specific molecular structure.

Liquid Crystal Synthesis
4-Pentylbenzoic acid is utilized as a precursor or component in the synthesis of novel liquid crystal materials. Its chemical structure can be modified to impart specific mesophase properties required for display technologies.
Organic Electronics Development
The compound serves as a building block in the research and development of organic and printed electronics. Its aromatic core and alkyl chain can influence charge transport and film-forming properties in organic semiconductor devices.
Materials Science Research
As a versatile organic intermediate, 4-Pentylbenzoic acid is employed in broader materials science research for creating new polymers or functionalised materials with tailored characteristics.
| Molecular weight | 192.25 |
|---|---|
| Linear formula | CH3(CH2)4C6H4CO2H |
| Assay | 99% |

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) | 26-36 |
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-Pentylbenzoic acid used for?
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4-Pentylbenzoic acid is primarily used as a building block in organic synthesis, particularly in the development of liquid crystals, organic electronics, and other advanced materials in materials science research.
What are the CAS number and molecular formula for 4-Pentylbenzoic acid?
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The CAS number for 4-Pentylbenzoic acid is 26311-45-5, and its molecular formula is CH3(CH2)4C6H4CO2H.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies 4-Pentylbenzoic acid with an assay of 99%. This product is supplied for research and development purposes and is not represented as USP, BP, EP, or any other pharmacopoeia grade.
How should 4-Pentylbenzoic acid be handled safely?
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Handle 4-Pentylbenzoic acid with appropriate personal protective equipment, including a dust mask (type N95 US recommended), eyeshields, and gloves. Ensure adequate ventilation and avoid breathing dust. Refer to the safety data sheet for comprehensive handling information.
Is 4-Pentylbenzoic acid subject to any special controls?
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Based on the provided data, 4-Pentylbenzoic acid is classified with GHS07 symbol and carries hazard statements H315, H319, and H335, indicating it is a skin, eye, and respiratory irritant. It is not indicated as a controlled or scheduled substance.
How is 4-Pentylbenzoic acid shipped and exported?
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Tech Serve Solutions, a global supplier and exporter, can arrange for the packing, shipping, and export of 4-Pentylbenzoic acid in compliance with international regulations for chemical transport.
How can I request a quote or sample of 4-Pentylbenzoic acid?
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To request a quote or a sample of 4-Pentylbenzoic acid, please contact the Tech Serve Solutions sales team through our official website or by telephone. Our team will assist you with your inquiry.
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