Description

1,3-Bis(3-Methacryloxy-2-Hydroxypropoxypropyl)Tetramethyldisiloxane, Tech-95 is a high-purity, difunctional organosilicon monomer featuring both methacrylate and siloxane groups in its molecular structure. This unique hybrid chemistry is critical for developing advanced materials that require a combination of organic polymer flexibility and inorganic silicone stability. It is an essential raw material for formulators and manufacturers in the photopolymer, advanced coatings, and specialty adhesive industries, where it acts as a key crosslinking agent to enhance performance properties.

Application

• Photopolymer Resins & 3D Printing: A primary component in UV-curable resins for stereolithography (SLA) and digital light processing (DLP) 3D printing, providing excellent cure speed and mechanical properties.
• Advanced Coatings: Used in formulating high-performance, abrasion-resistant, and weather-stable UV-curable coatings for optical fibers, electronics, and automotive applications.
• Dental & Medical Materials: Serves as a crosslinker in light-curable dental composites, restorative materials, and biocompatible medical device coatings.
• Specialty Adhesives & Sealants: Imparts enhanced adhesion, flexibility, and environmental resistance to UV-curing industrial adhesives and sealants.
• Optical Materials: Employed in the synthesis of high-refractive-index and transparent polymers for lenses, waveguides, and optical encapsulants.
• Modifier for Silicone Polymers: Acts as a reactive intermediate to introduce polymerizable methacrylate groups into silicone chains, creating tailored hybrid materials.

Basic Information

Item	Details
Product Name	1,3-Bis(3-Methacryloxy-2-Hydroxypropoxypropyl)Tetramethyldisiloxane, Tech-95
CAS No.	71223-24-0
Molecular Formula	C26H48O10Si2
Molecular Weight	576.83 g/mol
Synonyms	Bis(3-methacryloxy-2-hydroxypropoxypropyl) tetramethyldisiloxane; 1,3-Bis(3-methacryloyloxy-2-hydroxypropoxypropyl)-1,1,3,3-tetramethyldisiloxane; Methacryloxy-functional siloxane; Silane methacrylate; UV-curable siloxane crosslinker; Disiloxane dimethacrylate; METH-PDMS-METH; A proprietary trade name may apply.
EINECS	Contact for details

Quality Control

Our Tech-95 grade of this siloxane monomer is produced under stringent process controls to ensure batch-to-batch consistency and high purity. Quality is verified through a comprehensive suite of analytical methods including HPLC, GC, and NMR to confirm identity, assay, and impurity profiles. A detailed Certificate of Analysis (COA) documenting all relevant specifications is provided with each shipment to support your quality assurance protocols.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated place at temperatures between 15-25°C (59-77°F). This product is easily oxidized; for long-term storage, consider keeping under an inert atmosphere such as nitrogen. Keep away from heat, sparks, and open flames.

Specification

Item	Specification
Appearance	Colorless to pale yellow clear liquid
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Water Content (KF)	≤ 0.5%
Refractive Index (n20D)	1.460 - 1.470
Specific Gravity (20°C)	1.05 - 1.10
Viscosity (25°C)	Contact for details

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