Description

Calcium Stearate is a fine, white powder widely recognized as a versatile metallic soap and lubricant. Its primary value lies in its excellent water-repellent, lubricating, and release properties, making it a critical processing aid and functional additive across numerous industries. This compound is essential for manufacturers in the plastics, rubber, construction, and pharmaceutical sectors seeking to improve product flow, prevent sticking, and enhance material stability. The product is supplied as Calcium Stearate CAS NO 66071-81-6.

Application

• Plastics & Polymers: Acts as an acid scavenger, lubricant, and release agent in PVC processing, polyolefins, and engineering plastics to prevent equipment corrosion and improve mold flow.
• Rubber Industry: Used as a dusting agent, processing aid, and mold release agent to prevent uncured rubber sheets from sticking together.
• Construction Materials: Functions as a hydrophobic agent and waterproofing additive in concrete, cement, and gypsum products.
• Pharmaceuticals & Cosmetics: Serves as a tablet and powder lubricant, glidant, and anti-caking agent in solid dosage forms and cosmetic powders.
• Paints & Coatings: Employed as a flatting agent and suspending aid to control gloss and prevent pigment settling.
• Paper Production: Utilized as a lubricant and coating agent to improve surface smoothness and processing.
• Food Industry (Food Grade): Approved for use as an anti-caking agent, binder, and emulsifier in food products (subject to specific grade and regulatory compliance).
• Personal Care & Toiletries: Found in powders and pressed products as a texture enhancer and binder.

Basic Information

Product Name	Calcium Stearate
CAS No.	66071-81-6
Molecular Formula	Ca(C18H35O2)2
Molecular Weight	607.03 g/mol
Synonyms	Calcium Distearate; Octadecanoic Acid, Calcium Salt; Stearic Acid, Calcium Salt; Calcium Octadecanoate; Calcium Dioctadecanoate; Lubricant 18; Metasap 102; Synpro Calcium Stearate 151
EINECS	266-104-6

Quality Control

Our Calcium Stearate is manufactured under a strict quality management system. Production batches undergo rigorous analytical testing to ensure they meet precise specifications for purity, physical properties, and performance. Certificates of Analysis (COA) are provided with each shipment. We can supply grades compliant with various industry standards, including Food Chemical Codex (FCC) and USP-NF, upon request.

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). This material is hygroscopic (moisture-sensitive); the container must be kept tightly sealed to prevent caking and degradation due to moisture absorption. Keep away from strong acids and oxidizing agents.

Specification

Item	Specification
Appearance	Fine, white powder
Identification (IR)	Conforms
Assay (as CaO)	9.0 - 10.5 %
Loss on Drying	≤ 3.0 %
Free Fatty Acid	≤ 3.0 %
Heavy Metals (as Pb)	≤ 10 ppm
Arsenic (As)	≤ 3 ppm
Melting Point	145 - 160 °C
Mesh Size (200 mesh)	≥ 99.0 % pass

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