4-Hexylbenzoic acid
4-Hexylbenzoic acid (CAS 21643-38-9), with the linear formula CH3(CH2)5C6H4CO2H and a molecular weight of 206.28 g/mol, is a key organic compound. It is primarily utilised as a building block in materials science and organic electronics. Its properties also lend themselves to applications within the field of liquid crystals, making it a versatile intermediate for advanced material synthesis.

Liquid Crystal Synthesis
4-Hexylbenzoic acid serves as a precursor or intermediate in the synthesis of liquid crystalline materials. These materials are crucial for display technologies and optical devices.
Organic Electronics
This compound is employed as a building block in the development of organic electronic materials. It can be incorporated into polymers or small molecules for applications such as organic light-emitting diodes (OLEDs) and organic photovoltaics (OPVs).
Materials Science Research
As a versatile organic molecule, 4-Hexylbenzoic acid is utilised in materials science research for the creation of novel functional materials and advanced composites.
| Molecular weight | 206.28 |
|---|---|
| Linear formula | CH3(CH2)5C6H4CO2H |
| Assay | 99% |
| Form | liquid crystal |
| Protective equipment | Eyeshields, Gloves, type N95 (US), type P1 (EN143) respirator filter |
|---|---|
| Water hazard class (WGK, DE) | 3 |
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-Hexylbenzoic acid used for?
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4-Hexylbenzoic acid is used as a building block in materials science, particularly for the synthesis of liquid crystals and organic electronic materials.
What are the CAS number and formula for 4-Hexylbenzoic acid?
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The CAS number for 4-Hexylbenzoic acid is 21643-38-9, and its linear formula is CH3(CH2)5C6H4CO2H.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies 4-Hexylbenzoic acid with an assay of 99%. We do not represent this product as USP, BP, or EP grade.
What are the safety considerations when handling 4-Hexylbenzoic acid?
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Handling 4-Hexylbenzoic acid requires appropriate personal protective equipment, including eyeshields and gloves. A type N95 (US) or type P1 (EN143) respirator filter is recommended. Refer to the safety data sheet for comprehensive handling information.
How is 4-Hexylbenzoic acid packed and shipped?
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4-Hexylbenzoic acid is carefully packed to ensure safe transit and is exported globally by Tech Serve Solutions.
How can I request a quote or sample of 4-Hexylbenzoic acid?
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To request a quote or sample, please contact our sales department through the website or by phone.
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