Description

1,1,1,3,3-Pentamethyl-3-Allylpropanedisiloxane is a specialized organosilicon compound featuring a reactive allyl group, making it a valuable intermediate in advanced material synthesis. This chemical matters for its role as a key building block in creating custom silicone polymers and functionalized surfaces with tailored properties. Industries such as specialty polymers, advanced coatings, and electronics materials need it to develop products with enhanced performance characteristics like adhesion, flexibility, and thermal stability.

Application

• Silicone Polymer Modification: Acts as a reactive monomer or crosslinker to introduce allyl functionality into silicone elastomers and resins, improving their cure characteristics and final properties.
• Surface Functionalization Agent: Used to modify inorganic surfaces (e.g., silica, glass) by forming stable siloxane bonds, imparting hydrophobic or specific reactive sites.
• Adhesion Promoter Intermediate: Serves as a precursor in the synthesis of silane coupling agents for enhancing adhesion between organic polymers and inorganic substrates.
• Release Coating Formulations: Employed in the production of silicone-based release liners for labels, tapes, and industrial applications.
• Specialty Additive Synthesis: A key intermediate for creating custom silicone-based additives for personal care, coatings, and lubricants.
• Research & Development: Utilized in academic and industrial R&D for exploring new hybrid organic-inorganic materials and dendrimer structures.

Basic Information

Product Name	1,1,1,3,3-Pentamethyl-3-Allylpropanedisiloxane
CAS No.	7087-19-6
Molecular Formula	C11H26O2Si2
Molecular Weight	246.50 g/mol
Synonyms	Allylpentamethyldisiloxane; 3-Allyl-1,1,1,3,3-pentamethyldisiloxane; Allyl-PMDS; 1,3-Dihydro-1,1,3,3-tetramethyl-3-allyldisiloxane; Disiloxane, 1,1,1,3,3-pentamethyl-3-(2-propen-1-yl)-; 3-(Allyl)pentamethyldisiloxane; Allyloxypentamethyldisiloxane; (Allyldimethylsiloxy)trimethylsilane
EINECS	Contact for details

Quality Control

Our 1,1,1,3,3-Pentamethyl-3-Allylpropanedisiloxane undergoes rigorous quality testing to ensure compliance with industry standards and batch-to-batch consistency. We employ advanced analytical techniques including GC, NMR, and FTIR for precise identification and purity verification. Certificates of Analysis (COA) detailing all critical parameters are available upon request, supporting your quality assurance and regulatory needs.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at room temperature (15-25°C). Keep away from strong acids and incompatible organic solvents. For long-term storage, consider using an inert atmosphere to maintain product integrity.

Specification

Item	Specification
Appearance	Colorless to pale yellow clear liquid
Identification (IR)	Conforms to structure
Purity (GC)	≥ 97.0%
Refractive Index (n20/D)	1.410 - 1.415
Density (20°C)	0.85 - 0.87 g/mL

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