Description

C18-C22-Alkyl-4-Hydroxybenzoat CAS NO 201305-16-0 is a high-purity alkyl ester derivative of 4-hydroxybenzoic acid, specifically tailored with a long-chain C18 to C22 alkyl group. This molecular design provides a unique balance of lipophilicity and phenolic functionality, making it a valuable intermediate for synthesizing specialized additives and stabilizers. It is primarily sought by manufacturers in the polymer, personal care, and specialty chemical industries for its role in enhancing material properties and performance.

Application

• Polymer Additive: Acts as a light stabilizer and antioxidant in polyolefins (e.g., polyethylene, polypropylene) and engineering plastics to prevent degradation and extend product lifespan.
• Personal Care Ingredients: Serves as a key intermediate in the synthesis of oil-soluble UV filters and preservative agents for sunscreens and cosmetic formulations.
• Lubricant & Grease Additive: Used as a component in formulating high-performance lubricants and greases, contributing to oxidation resistance and thermal stability.
• Specialty Surfactant Synthesis: Functions as a hydrophobic building block for producing non-ionic surfactants and emulsifiers with specific solubility profiles.
• Coating & Resin Modifier: Incorporated into coatings, inks, and resin systems to improve weatherability, gloss retention, and compatibility.
• Chemical Intermediate: Employed in organic synthesis for pharmaceuticals and agrochemicals where a long-chain phenolic ester is required.

Basic Information

Product Name	C18-C22-Alkyl-4-Hydroxybenzoat
CAS No.	201305-16-0
Molecular Formula	C25-C29H52-H60O3 (Typical)
Molecular Weight	~400 - 450 g/mol (Typical)
Synonyms	4-Hydroxybenzoic Acid C18-C22 Alkyl Ester; Para-Hydroxybenzoic Acid Stearyl-Behenyl Ester; Octadecyl to Docosyl 4-Hydroxybenzoate; Long-Chain Alkyl Paraben; C18-22 Alkyl p-Hydroxybenzoate; Alkyl Gallate Derivative (Long Chain); Stearyl/Behenyl 4-Hydroxybenzoate
EINECS	Contact for details

Quality Control

Our C18-C22-Alkyl-4-Hydroxybenzoat is manufactured under a strict quality management system. Each batch undergoes rigorous analytical testing, including HPLC for assay and purity, GC for residual solvents, and identity confirmation by IR and NMR spectroscopy. We provide comprehensive Certificates of Analysis (COA) to ensure the product meets your specific technical requirements and supports regulatory compliance for your applications.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at a controlled room temperature (15-25°C). Keep away from heat sources and incompatible materials such as strong oxidizing agents. The product is light-sensitive and should be stored away from light to maintain stability.

Specification

Item	Specification
Appearance	White to off-white powder or flakes
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Melting Point	65 - 75 °C
Loss on Drying	≤ 0.5%
Heavy Metals (as Pb)	≤ 10 ppm
Residual Solvents (GC)	Meets ICH guidelines

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