Description

Yttrium Stearate is a rare earth metal soap compound, specifically the yttrium salt of stearic acid. This material is valued for its role as a highly effective thermal stabilizer and lubricant in polymer processing, particularly for PVC and other halogenated polymers. It is essential for manufacturers in the plastics, specialty chemicals, and advanced materials sectors seeking to enhance product durability and processing efficiency.

Application

• Primary Thermal Stabilizer for rigid and flexible Polyvinyl Chloride (PVC) formulations, providing excellent long-term heat stability.
• Synergistic Co-stabilizer in complex PVC stabilizer systems, often used alongside calcium/zinc or organotin-based compounds.
• Functional Lubricant & Processing Aid in plastics compounding, reducing melt viscosity and improving mold release.
• Water Repellent & Hydrophobic Agent in surface treatments for textiles, paper, and construction materials.
• Gelling Agent & Thickener in the production of greases, lubricants, and specialty gels.
• Catalyst Component & Precursor in organic synthesis and the manufacture of advanced ceramic materials.

Basic Information

Product Name	Yttrium Stearate
CAS No.	81518-51-6
Molecular Formula	C54H105O6Y
Molecular Weight	939.33 g/mol (approx.)
Synonyms	Yttrium(III) stearate; Octadecanoic acid, yttrium(3+) salt; Stearic acid, yttrium salt; Yttrium tris(stearate); Yttrium octadecanoate; Y-St; Yttrium soap
EINECS	Contact for details

Quality Control

Our Yttrium Stearate is manufactured under a strict quality management system. Each batch undergoes rigorous analytical testing to ensure consistent purity, metal content, and physical properties. We provide comprehensive Certificates of Analysis (COA) with key parameters including assay (Yttrium content), moisture level, melting point, and acid value. Our production adheres to ISO 9001 standards, and we can support compliance with REACH and other global regulatory frameworks upon request.

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). This product is hygroscopic (moisture-sensitive) and must be kept in a low-humidity environment to prevent caking and degradation. Keep away from strong acids and oxidizing agents.

Specification

Item	Specification
Appearance	White to off-white fine powder
Identification (IR)	Complies
Assay (Yttrium Content)	≥ 9.5 %
Moisture (Loss on Drying)	≤ 2.0 %
Melting Point	100 - 110 °C
Acid Value	≤ 10 mg KOH/g
Ash Content	10 - 12 %
Particle Size (D50)	≤ 45 μm

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