Description

(Dimethylstannylene)Bis(Thioethane-1,2-Diyl) Distearate CAS NO 59138-44-2 is a specialized organotin compound with a unique structure combining stannylene and thioether linkages. This chemical is valued for its role as a high-performance stabilizer and catalyst in advanced polymer synthesis and modification processes. It is primarily required by manufacturers in the plastics, specialty coatings, and adhesives industries seeking to enhance material properties such as thermal stability and weatherability.

Application

• Polymer Stabilizer: Acts as a highly effective heat and light stabilizer for PVC and other halogenated polymers, preventing degradation during processing and extending product lifespan.
• Catalyst for Polycondensation: Used as a catalyst or co-catalyst in the production of polyesters, polyurethanes, and other condensation polymers, improving reaction efficiency and control.
• Crosslinking Agent: Facilitates crosslinking in silicone rubbers and certain specialty elastomers, enhancing their mechanical strength and thermal resistance.
• Lubricant & Processing Aid: Serves as an internal lubricant and mold release agent in complex plastic formulations, improving flow properties and surface finish.
• Antifouling Coatings: A key intermediate or additive in the formulation of marine antifouling paints, leveraging the biocidal properties of organotin derivatives.
• Adhesive Formulations: Imparts improved adhesion and durability in high-performance structural and hot-melt adhesives.

Basic Information

Item	Details
Product Name	(Dimethylstannylene)Bis(Thioethane-1,2-Diyl) Distearate
CAS No.	59138-44-2
Molecular Formula	C40H80O4S2Sn
Molecular Weight	791.9 g/mol (approx.)
Synonyms	Dimethyltin Bis(2-thioethyl) Distearate; Distearyl (Dimethylstannylene)bis(thioethane-1,2-diyl) Ester; Tin, (Dimethylstannylene)bis(2-thioethyl) Distearate; Organotin Stabilizer 59138-44-2; Methyltin Thioether Stearate; (Dimethyltin)bis(2-thioethyl) Distearate; CAS 59138-44-2
EINECS	Contact for details

Quality Control

Our production of (Dimethylstannylene)Bis(Thioethane-1,2-Diyl) Distearate adheres to stringent quality protocols to ensure batch-to-batch consistency and performance reliability. Each lot is analyzed against comprehensive specifications, including identity, purity, and critical impurity profiles. A Certificate of Analysis (COA) detailing all test results is provided with every shipment to support your quality assurance and regulatory compliance needs.

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). Due to its hygroscopic (moisture-sensitive) nature, the container must be kept sealed when not in use to prevent degradation from atmospheric moisture. Keep away from incompatible materials such as strong oxidizing agents.

Specification

Item	Specification
Appearance	White to off-white powder or flakes
Identification (IR)	Conforms to reference spectrum
Assay (Tin content)	≥ 95.0%
Melting Point	Contact for details
Loss on Drying	≤ 2.0%
Heavy Metals (as Pb)	≤ 20 ppm

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