Description

n-Stearoyl-p-Aminophenol is a synthetic organic compound belonging to the class of phenolic amides, specifically an N-acyl derivative of p-aminophenol. This chemical is valued for its role as a versatile intermediate and functional additive, offering properties such as antioxidant activity and compatibility with polymer systems. It is primarily utilized in the production of specialty polymers, as a stabilizer in industrial formulations, and in the synthesis of advanced materials for the plastics, coatings, and chemical manufacturing sectors.

Application

• Polymer Additive & Stabilizer: Acts as an antioxidant and processing stabilizer in polyolefins (e.g., polyethylene, polypropylene) and other polymers to prevent thermal and oxidative degradation during manufacturing and service life.
• Chemical Intermediate: Serves as a key building block in organic synthesis for producing more complex amides, esters, and specialty chemicals used in pharmaceuticals and agrochemicals.
• Lubricant & Grease Formulation: Used as an additive in synthetic lubricants and industrial greases to enhance oxidation resistance and improve performance under high-temperature conditions.
• Coating & Resin Modifier: Incorporated into coating systems, inks, and resin formulations to improve durability, adhesion, and resistance to environmental factors.
• Rubber Industry: Functions as an anti-aging agent and non-staining antioxidant in synthetic rubber and elastomer compounds.
• Research & Development: Employed in academic and industrial R&D for studying antioxidant mechanisms and developing new material science applications.

Basic Information

Product Name	n-Stearoyl-p-Aminophenol
CAS No.	103-99-1
Molecular Formula	C24H41NO2
Molecular Weight	375.59 g/mol
Synonyms	4-Stearoylaminophenol; N-(4-Hydroxyphenyl)octadecanamide; p-Stearoylaminophenol; Octadecanoyl-p-aminophenol; Stearic acid p-aminophenyl ester (common misnomer); N-Octadecanoyl-4-aminophenol; 4-Hydroxy-N-octadecanoylaniline; Antioxidant SAP
EINECS	203-161-6

Quality Control

Our n-Stearoyl-p-Aminophenol is manufactured under a strict quality management system. Each batch undergoes comprehensive analytical testing to ensure it meets precise specifications for identity, purity, and performance. A detailed Certificate of Analysis (COA) is provided with every shipment, documenting key parameters such as assay, melting point, and impurity profiles. We are committed to supplying material that is consistent and reliable for your critical industrial applications.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at ambient temperature (15-25°C). Keep away from strong oxidizing agents, strong acids, and strong bases. Under these conditions, the product has excellent shelf stability.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Melting Point	92 - 96 °C
Loss on Drying	≤ 0.5%
Heavy Metals (as Pb)	≤ 20 ppm

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