Description

Platinum(0)-1,3-Divinyl-1,1,3,3-Tetramethyldisiloxane is a highly reactive, platinum(0)-based organosilicon complex, widely recognized as a premier Karstedt's catalyst precursor for hydrosilylation reactions. Its primary value lies in its ability to provide a highly active and selective platinum source, which is critical for initiating and controlling the cross-linking of silicone polymers. This compound is essential for manufacturers in the silicone elastomer, adhesive, sealant, and coating industries who require consistent catalytic performance for producing high-performance, durable materials.

Application

• Primary Catalyst for Addition-Cure Silicones: The key initiating component in platinum-catalyzed hydrosilylation reactions for producing high-strength silicone rubbers (HTV, LSR) and gels (RTV-2).
• Silicone Release Coatings: Used in the production of pressure-sensitive adhesive (PSA) release liners for labels and tapes.
• Silicone Encapsulants & Potting Compounds: Facilitates the curing of silicones used for protecting electronic components and LED devices.
• Silicone Adhesives & Sealants: Enables the room-temperature or heat-activated curing of high-performance sealants and adhesives in construction and automotive applications.
• Silicone Masterbatches: Serves as the active ingredient in concentrated catalyst pastes or liquids for precise and safe handling in manufacturing.
• Crosslinking Agent for Specialty Polymers: Employed in the synthesis and modification of other polymers via hydrosilylation chemistry.

Basic Information

Product Name	Platinum(0)-1,3-Divinyl-1,1,3,3-Tetramethyldisiloxane
CAS No.	68478-92-2
Molecular Formula	C10H22OSi2Pt
Molecular Weight	401.53 g/mol
Synonyms	Karstedt's Catalyst; Platinum(0)-1,3-divinyltetramethyldisiloxane complex; Platinum-divinyltetramethyldisiloxane; Platinum(0)-divinyltetramethyldisiloxane complex; Pt(dvs); Pt(0)-DVTMS; 1,3-Divinyl-1,1,3,3-tetramethyldisiloxane platinum(0) complex; Platinum(0)-1,3-diethenyl-1,1,3,3-tetramethyldisiloxane
EINECS	Contact for details

Quality Control

Our Platinum(0)-1,3-Divinyl-1,1,3,3-Tetramethyldisiloxane is manufactured under stringent conditions to ensure batch-to-batch consistency and high catalytic activity. Quality is verified through a series of analytical tests including Platinum content assay, identity confirmation (IR, NMR), and purity assessment. We provide comprehensive Certificates of Analysis (COA) with each shipment, detailing all critical specifications to support your quality assurance protocols.

Storage

Preserve in a tightly closed container, protected from light. Store under an inert atmosphere (e.g., nitrogen or argon) at 2-8°C to maximize shelf-life and prevent deactivation. This material is light-sensitive and easily oxidized; prolonged exposure to air, moisture, or elevated temperatures should be avoided.

Specification

Item	Specification
Appearance	Clear, colorless to pale yellow liquid
Identification (IR)	Conforms to reference spectrum
Platinum Content (Assay)	Typically 2.0 - 3.0% (w/w)
Purity (GC)	≥ 95.0%

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