Stearamide

Updated: 2026-09-16

Overview

Stearamide is a fatty acid amide derived from stearic acid, widely utilized in industrial applications due to its lubricating and anti-blocking properties. It is synthesized through the reaction of stearic acid with ammonia or amines. The compound is favored for its ability to reduce friction and improve processing efficiency in polymer production. As a non-toxic and thermally stable material, stearamide is commonly integrated into plastics, rubber, and coatings. Its role as a slip agent ensures smooth surface finishes in films and molded products, making it indispensable in packaging and automotive industries.

Physical and Chemical Properties

Stearamide appears as a white or off-white powder or flakes with a melting point range of 98-102°C. It is insoluble in water but dissolves readily in organic solvents like ethanol and acetone. The compound exhibits low volatility and high thermal stability, making it suitable for high-temperature processing. With a density of approximately 0.96 g/cm³, stearamide is lightweight yet effective in reducing surface friction. Its molecular structure (C18H37NO) contributes to its hydrophobic nature, which enhances its performance as a lubricant and release agent in polymer applications.

Main Applications

Stearamide serves as a slip and anti-blocking agent in polyethylene and polypropylene films, preventing adhesion between layers during production and storage. In rubber manufacturing, it acts as an internal lubricant, improving mold release and reducing processing time. The compound is also used in coatings and inks to enhance surface smoothness and scratch resistance. Additionally, stearamide finds niche applications in cosmetics and personal care products, where it functions as a thickening agent and emulsion stabilizer.

Safety and Storage

Stearamide is classified as low-toxicity and poses minimal health risks when handled properly. Avoid inhalation of dust and prolonged skin contact to prevent irritation. Use personal protective equipment (PPE) such as gloves and masks during handling. Store stearamide in a cool, dry place away from moisture and direct sunlight to maintain its stability. Ensure containers are tightly sealed to prevent contamination. Shelf life typically exceeds two years under optimal storage conditions.

B2B Procurement Guide

When procuring stearamide, prioritize suppliers with certifications like ISO or REACH compliance to ensure quality and regulatory adherence. Verify the product's purity (≥98%) and packaging (typically 25kg bags) to meet your production needs. Request samples for testing compatibility with your specific applications. Compare prices from multiple vendors, with the reference range being $2.5-$4.5/kg. Bulk purchases may qualify for discounts. Ensure reliable logistics to avoid delays in supply chain operations.