Description

1,3-Bis(3-Methacryloxypropyl)Tetramethyldisiloxane is a high-purity, difunctional organosilicon monomer featuring reactive methacrylate groups. This compound is a critical building block in advanced material science, enabling the synthesis of polymers with enhanced flexibility, thermal stability, and surface properties. It is essential for R&D and production in industries such as specialty adhesives, advanced coatings, and high-performance elastomers where silicone-organic hybrid materials are required.

Application

• Crosslinking Agent for UV-curable and thermally cured silicone-acrylate hybrid resins and coatings.
• Key Monomer in the synthesis of silicone-modified polyacrylates for pressure-sensitive adhesives (PSAs) and sealants.
• Surface Modifier for improving the compatibility, release, and wetting properties of inorganic fillers in composite materials.
• Dental & Biomedical Materials precursor for creating biocompatible, flexible silicone-based polymers.
• Optical Materials component in the production of clear, impact-resistant silicone lenses and encapsulants.
• Additive for Lubricants & Greases to enhance thermal-oxidative stability and surface adhesion.

Basic Information

Product Name	1,3-Bis(3-Methacryloxypropyl)Tetramethyldisiloxane
CAS No.	18547-93-8
Molecular Formula	C20H36O6Si2
Molecular Weight	428.68 g/mol
Synonyms	Bis(3-methacryloxypropyl)tetramethyldisiloxane; 1,3-Bis(3-methacryloyloxypropyl)-1,1,3,3-tetramethyldisiloxane; Methacryloxypropyl-Terminated Polydimethylsiloxane (short chain); Silane, 1,1,3,3-tetramethyl-1,3-bis[3-(2-methyl-1-oxo-2-propenyl)oxy]propyl]disiloxane; Disiloxane, 1,1,3,3-tetramethyl-1,3-bis[3-(methacryloyloxy)propyl]-; MPTDS; Methacryloxypropyl-PDMS; Silmer ACR Di-10 (trade name variant)
EINECS	Contact for details

Quality Control

Our 1,3-Bis(3-Methacryloxypropyl)Tetramethyldisiloxane is manufactured under strict quality management systems. Each batch undergoes rigorous analytical testing, including chromatography and spectroscopy, to ensure high purity and consistent performance. Certificates of Analysis (COA) detailing purity, identity, and key physical properties are 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 15-25°C under an inert atmosphere (e.g., nitrogen) to prevent oxidation and polymerization. Keep away from heat, sparks, and open flame. For long-term storage, refrigeration may be recommended; please contact us for specific guidance.

Specification

Item	Specification
Appearance	Clear, colorless to pale yellow liquid
Identification (IR)	Conforms to structure
Assay (GC/HPLC)	≥ 97.0%
Refractive Index (n20D)	1.440 - 1.450
Density (20°C)	0.98 - 1.02 g/cm³
Inhibitor Content (MEHQ)	50 - 200 ppm

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