Description

2,2-Dioctyl-1,3-Dioxa-6,9-Dithia-2-Stannacycloundecane-4,11-Dione is a specialized organotin compound featuring a unique cyclic structure that integrates both dioxa and dithia moieties. This molecular architecture is critical for its function as a highly effective stabilizer and catalyst in advanced polymer formulations. It is primarily sought by manufacturers in the plastics, rubber, and specialty chemical industries who require precise control over material properties and processing stability.

Application

• Polyvinyl Chloride (PVC) Stabilizer: Acts as a highly efficient heat and light stabilizer for rigid and flexible PVC products, preventing degradation during processing and extending service life.
• Polyurethane (PU) Catalyst: Serves as a selective catalyst in the production of polyurethane foams and elastomers, influencing reaction kinetics and final polymer structure.
• Silicone Rubber Cross-linking Agent: Used as an additive to promote and control the cross-linking (curing) process in high-performance silicone rubber formulations.
• Lubricant and Grease Additive: Functions as an extreme pressure (EP) additive and anti-wear agent in advanced synthetic lubricants and industrial greases.
• Antifouling Paint Component: Employed as a bioactive agent in marine antifouling coatings to inhibit the growth of barnacles and algae on ship hulls.
• Polymer Modification Agent: Utilized to modify the surface properties and compatibility of various engineering plastics and polymer blends.

Basic Information

Product Name	2,2-Dioctyl-1,3-Dioxa-6,9-Dithia-2-Stannacycloundecane-4,11-Dione
CAS No.	56875-68-4
Molecular Formula	C23H42O4S2Sn
Molecular Weight	565.4 g/mol
Synonyms	Dioctyltin Mercaptoacetate Ester Cyclic Derivative; 2,2-Dioctyl-1,3,6,9-tetraoxa-2-stanna-5,8-dithiacycloundecane-4,11-dione; Dioctyltin Bis(2-mercaptoacetate) Cyclic Ester; Stannane, 1,3-dioxa-6,9-dithia-2-stannacycloundecane-4,11-dione, 2,2-dioctyl-; Organotin Stabilizer 56875-68-4; Tinuvin analogue (stabilizer class); Dioctyltin β-mercaptopropionate cyclic derivative (related compound); Thermoplastic stabilizer CAS 56875-68-4
EINECS	Contact for details

Quality Control

Our production of 2,2-Dioctyl-1,3-Dioxa-6,9-Dithia-2-Stannacycloundecane-4,11-Dione adheres to a stringent quality management system. Every batch undergoes rigorous analytical testing, including assay, identification, and impurity profiling, to ensure consistent purity and performance. Certificates of Analysis (COA) detailing all specifications and test results are provided to guarantee traceability and compliance with your technical requirements.

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). Keep away from heat sources, strong oxidizing agents, and incompatible materials. Due to its light-sensitive nature, containers should be kept in opaque packaging or dark storage conditions.

Specification

Item	Specification
Appearance	Colorless to pale yellow viscous liquid
Identification (IR)	Conforms to structure
Assay (Tin content)	Min. 20.5%
Purity (HPLC)	Min. 95.0%
Specific Gravity (20°C)	1.15 - 1.25
Refractive Index (n20D)	1.510 - 1.530
Water Content (KF)	Max. 0.5%

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