Description

Dibutyl Tin Bis(Isooctylmaleate) CAS NO 25168-21-2 is a high-performance organotin compound widely used as a heat stabilizer and catalyst. Its primary value lies in its exceptional ability to prevent thermal degradation in polymer processing, ensuring product longevity and performance. This chemical is essential for manufacturers in the PVC, polyurethane, and silicone industries who require reliable stabilization and controlled catalysis for high-quality end products.

Application

• Primary heat stabilizer for rigid and flexible PVC (polyvinyl chloride) formulations.
• Catalyst for the production of polyurethane foams and elastomers.
• Stabilizer and catalyst in silicone rubber (RTV) and sealant manufacturing.
• Used as a curing agent for condensation-cure silicone systems.
• Stabilizing additive for other halogen-containing polymers.
• Intermediate in the synthesis of other organotin compounds.

Basic Information

Product Name	Dibutyl Tin Bis(Isooctylmaleate)
CAS No.	25168-21-2
Molecular Formula	C36H64O8Sn
Molecular Weight	743.77 g/mol
Synonyms	Dibutyltin bis(isooctyl maleate); Dibutyltin diisooctyl maleate; DBTLM; Dibutyltin maleate ester; Stannane, dibutylbis[(1-oxo-2-buten-1,4-diyl)bis(oxy)]bis[2-(2-methylpropyl)-6-methylheptyl]-, (Z,Z)-; Dibutyltin bis(6-methylheptyl maleate); Thermolite 831; Stanclere T-2500
EINECS	246-699-5

Quality Control

Our Dibutyl Tin Bis(Isooctylmaleate) is manufactured under strict quality management systems. Every batch undergoes rigorous analytical testing to ensure it meets precise specifications for tin content, purity, and performance characteristics. A comprehensive Certificate of Analysis (COA) detailing assay, identity, and impurity profiles is provided with each shipment to guarantee consistency and compliance with your formulation 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). This product is hygroscopic (moisture-sensitive); containers must be kept tightly sealed to prevent absorption of atmospheric moisture, which can affect product performance.

Specification

Item	Specification
Appearance	Clear, pale yellow to yellow liquid
Identification (IR)	Conforms to standard
Assay (Tin Content)	15.5 - 16.5 %
Specific Gravity (25°C)	1.05 - 1.10
Refractive Index (20°C)	1.480 - 1.490
Color (Gardner)	≤ 5
Water Content	≤ 0.3 %

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