Description

Di-n-Butylbis(Methylmaleate)Tin is an organotin compound with the CAS number 15546-11-9, primarily utilized as a catalyst and stabilizer in polymer chemistry. This compound is valued for its ability to facilitate specific organic transformations and enhance the thermal stability of various polymeric materials. It is a critical component for manufacturers in the plastics, coatings, and specialty chemical synthesis industries seeking efficient and reliable performance additives.

Application

• Polymerization Catalyst: Acts as a catalyst in the production of polyesters, polyurethanes, and other condensation polymers.
• PVC Stabilizer: Used as a heat stabilizer in polyvinyl chloride (PVC) formulations to prevent degradation during processing.
• Cross-linking Agent: Facilitates cross-linking reactions in silicone and other elastomer systems to improve mechanical properties.
• Esterification & Transesterification Catalyst: Promotes esterification and transesterification reactions in organic synthesis and biodiesel production.
• Specialty Additive for Coatings: Incorporated into industrial coatings and adhesives to modify curing profiles and enhance final film properties.
• Intermediate for Organometallic Synthesis: Serves as a key precursor for synthesizing more complex organotin compounds with tailored functionalities.

Basic Information

Item	Detail
Product Name	Di-n-Butylbis(Methylmaleate)Tin
CAS No.	15546-11-9
Molecular Formula	C18H28O8Sn
Molecular Weight	491.11 g/mol
Synonyms	Dibutyltin bis(methyl maleate); Dibutyltin methylmaleate; Stannane, dibutylbis[(2-methyl-1,3-dioxo-2-propen-1-yl)oxy]-; Tin, dibutylbis(methyl maleato)-; Methyl maleate dibutyltin derivative; DBTL-MM; Organotin catalyst 15546-11-9; Dibutyltin dimethymaleate
EINECS	Contact for details

Quality Control

Our Di-n-Butylbis(Methylmaleate)Tin is manufactured under strict quality management protocols to ensure batch-to-batch consistency and high purity. Each lot is analyzed against stringent internal specifications, which typically include assay, tin content, and identification tests. A Certificate of Analysis (COA) documenting these results is provided with every shipment to guarantee 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 room temperature (15-25°C). Keep away from heat sources and incompatible materials. Due to its light-sensitive nature, prolonged exposure to direct light should be avoided.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms to structure
Assay (GC or Titration)	≥ 95.0%
Tin (Sn) Content	23.0 - 25.0 %
Specific Gravity (20°C)	1.20 - 1.30
Refractive Index (20°C)	1.480 - 1.510

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