4-Ethoxybenzoic acid
4-Ethoxybenzoic acid (CAS: 619-86-3; Formula: C2H5OC6H4CO2H; Molar Mass: 166.17 g/mol) is a valuable organic building block supplied by Tech Serve Solutions. This white crystalline solid is primarily utilised in chemical synthesis, with specific applications noted in materials science, including the preparation of carbon nanotube thin films. It is also relevant to fields such as organic and printed electronics and liquid crystals.

Advanced Materials Synthesis
4-Ethoxybenzoic acid serves as a key intermediate in the synthesis of advanced materials. It has been employed in the preparation of highly conducting and flexible few-walled carbon nanotube thin films, demonstrating its utility in creating novel electronic materials.
Organic and Printed Electronics
As an organic building block, this compound finds relevance in the development of organic and printed electronics. Its chemical structure lends itself to incorporation into materials designed for next-generation electronic devices.
Liquid Crystal Research
The molecular structure of 4-Ethoxybenzoic acid makes it a compound of interest in liquid crystal research. It may be utilised in the design and synthesis of new liquid crystalline materials for display technologies and other applications.
| Molecular weight | 166.17 |
|---|---|
| Linear formula | C2H5OC6H4CO2H |
| Assay | 99% |
| Application | 4-Ethoxybenzoic acid was used to prepare highly conducting and flexible few-walled carbon nanotube thin films1. |
| Melting point | 197-199 °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-Ethoxybenzoic acid used for?
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4-Ethoxybenzoic acid is used as a building block in chemical synthesis, particularly in materials science for applications such as preparing carbon nanotube thin films. It is also relevant in organic electronics and liquid crystal research.
What are the CAS number and formula for 4-Ethoxybenzoic acid?
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The CAS number for 4-Ethoxybenzoic acid is 619-86-3, and its linear formula is C2H5OC6H4CO2H.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies 4-Ethoxybenzoic acid with an assay of 99%. We do not represent this product as USP, BP, or EP grade.
How should 4-Ethoxybenzoic acid be handled safely?
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4-Ethoxybenzoic acid is classified as an irritant. Handle with appropriate personal protective equipment, including a dust mask type N95 (US), eyeshields, and gloves. Ensure good ventilation and avoid inhaling dust. Store in a cool, dry place.
Is 4-Ethoxybenzoic acid a controlled substance?
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Based on the provided data, 4-Ethoxybenzoic acid is not classified as a controlled substance.
How is 4-Ethoxybenzoic acid packed and shipped?
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Tech Serve Solutions packs and exports fine chemicals worldwide, adhering to all relevant shipping regulations for chemical products.
How can I request a sample or quote for 4-Ethoxybenzoic acid?
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To request a sample or quote for 4-Ethoxybenzoic acid, please contact our sales department via the website or provide your details through our online enquiry form.
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