Description

4-Hydroxybenzoic Acid Octadecyl Ester is a long-chain alkyl ester derivative of p-hydroxybenzoic acid, valued for its lipophilic character and stability. This compound serves as a versatile intermediate and functional additive, offering excellent compatibility with hydrophobic matrices. It is primarily sought by manufacturers in the polymer, cosmetic, and specialty chemical industries for applications requiring controlled release, plasticization, or UV stabilization.

Application

• Polymer Additive: Acts as a plasticizer, lubricant, or processing aid in various polymer systems, including PVC and polyolefins.
• Cosmetic & Personal Care: Used as a lipophilic emollient, texture enhancer, or carrier for active ingredients in creams, lotions, and sunscreens.
• Specialty Coatings: Functions as a modifier to improve flexibility, adhesion, and water resistance in coating formulations.
• Chemical Intermediate: Serves as a key building block for the synthesis of more complex surfactants, stabilizers, or liquid crystal compounds.
• Release Agent: Employed in molding and casting processes to facilitate the release of finished products from molds.
• UV Stabilizer Precursor: Can be utilized in the development of light-stabilizing additives for materials prone to photodegradation.

Basic Information

Product Name	4-Hydroxybenzoic Acid Octadecyl Ester
CAS No.	71067-10-2
Molecular Formula	C25H42O3
Molecular Weight	390.60 g/mol
Synonyms	Octadecyl 4-hydroxybenzoate; Stearyl 4-hydroxybenzoate; p-Hydroxybenzoic acid stearyl ester; 4-Hydroxybenzoic acid, octadecyl ester; Octadecyl p-hydroxybenzoate; Stearyl p-hydroxybenzoate; n-Octadecyl 4-hydroxybenzoate; Benzoic acid, 4-hydroxy-, octadecyl ester
EINECS	Contact for details

Quality Control

Our 4-Hydroxybenzoic Acid Octadecyl Ester is manufactured under a strict quality management system. Each batch undergoes rigorous analytical testing to ensure consistent purity, identity, and performance. We provide comprehensive Certificates of Analysis (COA) with key parameters such as assay, melting point, and impurity profiles. Our quality commitment ensures the material meets the specifications required for industrial and specialty chemical applications.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at room temperature (15-25°C). Keep away from strong oxidizing agents and heat sources. Under these conditions, the product remains stable for extended periods.

Specification

Item	Specification
Appearance	White to off-white crystalline powder or flakes
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Melting Point	95 - 100 °C
Loss on Drying	≤ 0.5%
Heavy Metals	≤ 20 ppm

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.