Description

Strontium Stearate is a white, fine powder classified as a metallic soap or stearate salt. This compound serves as a highly effective and versatile heat stabilizer and lubricant in polymer processing, particularly for applications requiring clarity and low toxicity. It is a critical additive for manufacturers in the plastics, rubber, and coatings industries seeking to enhance product performance and processing efficiency.

Application

• PVC Stabilizer: Primary application as a highly efficient and cost-effective heat stabilizer for rigid and flexible polyvinyl chloride (PVC) formulations, often used in combination with other metal soaps.
• Lubricant & Release Agent: Functions as an internal and external lubricant in plastics processing (e.g., PVC, ABS) to improve flow properties and act as a mold release agent.
• Waterproofing Agent: Used in the production of waterproof concrete, cements, and construction materials to reduce water absorption.
• Cosmetics & Personal Care: Employed as a opacifying agent, viscosity modifier, and stabilizer in creams, lotions, and makeup products.
• Grease & Lubricant Thickener: Acts as a gelling agent and thickener in the formulation of high-temperature greases and specialty lubricants.
• Powder Metallurgy: Serves as a lubricant in the compaction of metal powders to reduce friction and improve die release.
• Paper Coating: Utilized as a lubricant and water repellent in paper coating formulations to improve surface finish and processability.

Basic Information

Product Name	Strontium Stearate
CAS No.	10196-69-7
Molecular Formula	C36H70O4Sr
Molecular Weight	654.63 g/mol
Synonyms	Octadecanoic acid, strontium salt; Strontium distearate; Stearic acid, strontium salt; Strontium octadecanoate; Sr-St; Metallic soap of strontium; Dibasic strontium stearate
EINECS	233-472-1

Quality Control

Our Strontium Stearate is manufactured under strict quality management systems. Each batch undergoes rigorous analytical testing to ensure it meets precise specifications for purity, metal content, and physical properties. We provide comprehensive Certificates of Analysis (COA) with every shipment, detailing key parameters such as assay, moisture content, and particle size distribution. Our quality commitment supports compliance with relevant industry standards for polymer additives.

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 acids and oxidizing agents. The product is hygroscopic (moisture-sensitive); ensure containers are sealed after use to prevent caking.

Specification

Item	Specification
Appearance	White fine powder
Identification (IR)	Conforms
Assay (as SrO)	18.0 - 20.0 %
Moisture Content	≤ 2.0 %
Free Fatty Acid (as Stearic)	≤ 3.0 %
Melting Point	130 - 145 °C
Particle Size (through 200 mesh)	≥ 99.0 %
Heavy Metals (as Pb)	≤ 20 ppm

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