High-Purity Platinum(0)-1,3-divinyl-1,1,3,3-tetramethyldisiloxane complex from Aure Chemical – Your Trusted Source
Platinum(0)-1,3-divinyl-1,1,3,3-tetramethyldisiloxane complex (commonly known as Karstedt's catalyst or Pt(dvs)), CAS No. 68478-92-2, is the most widely used homogeneous platinum(0) precatalyst in silicone chemistry and hydrosilylation reactions. Supplied by Aure Chemical as a clear to pale yellow xylene solution (typically 2–3% Pt w/w) or concentrated neat form with precise platinum content (verified Pt assay), this air-sensitive complex features platinum(0) stabilized by the divinyltetramethyldisiloxane (dvs) ligand. It delivers exceptional activity and selectivity in platinum-catalyzed hydrosilylation of alkenes/alkynes with Si–H bonds, enabling rapid, room-temperature curing of addition-cure silicones, vinyl-functionalized polymers, and cross-linking systems. Its broad functional group tolerance, high catalytic efficiency, and long-term stability in formulations make it indispensable in silicone elastomer production, adhesives, coatings, release agents, and specialty silicone materials. Aure Chemical provides consistent Pt concentration, low residual impurities, and secure platinum sourcing to ensure batch-to-batch reproducibility and optimal curing performance in industrial-scale silicone manufacturing worldwide.
Basic Information of Platinum(0)-1,3-divinyl-1,1,3,3-tetramethyldisiloxane complex
Aure Chemical supplies Karstedt's catalyst as a premium Pt(0) precatalyst in xylene solution or neat form with verified platinum content and exceptional purity for hydrosilylation applications.
| CAS No. | 68478-92-2 |
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| EC No. | 270-705-7 |
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| Chemical Formula | C₈H₂₄O₂Si₃Pt (complex); typically supplied in xylene solution |
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| Molecular Weight | 381.64 g/mol (complex); Pt content 2–3% w/w in solution |
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| Appearance | Clear to pale yellow liquid (xylene solution) |
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| Odor | Xylene-like (solvent) |
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| Melting point | Not applicable (solution) |
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| Boiling point | ~138–140 °C (xylene solvent) |
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| Density | approx. 0.88–0.92 g/mL (2–3% Pt solution at 20 °C) |
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| Solubility | Miscible with hydrocarbons, silicone oils, toluene; insoluble in water |
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| Nature (hazards) | Flammable liquid (xylene solvent), harmful if swallowed or inhaled, may cause long lasting harmful effects to aquatic life |
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| RIDADR | UN 1307, Xylenes, Class 3, Packing Group III (solution) |
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| Chemical Structure |  |
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Aure Chemical offers customizable Pt concentrations (1–5% Pt w/w typical), solvent options (xylene, toluene, silicone fluid), and inert-atmosphere packaging to match your hydrosilylation, curing, or formulation requirements.
Primary Applications of Platinum(0)-1,3-divinyl-1,1,3,3-tetramethyldisiloxane complex
Karstedt's catalyst remains the industry gold standard for platinum-catalyzed hydrosilylation and silicone curing due to its unmatched activity and selectivity.
Addition-Cure Silicone Elastomers & Rubbers
Catalyzes rapid cross-linking of vinyl-functional silicones with Si–H containing cross-linkers at room temperature, essential for LSR (liquid silicone rubber), RTV silicones, and high-performance elastomers.
Hydrosilylation of Alkenes & Alkynes
Enables efficient Si–H addition to unsaturated bonds under mild conditions, providing selective routes to organosilicon compounds in fine chemicals and specialty silicones.
Silicone Release Coatings & Adhesives
Used in paper release liners, pressure-sensitive adhesives, and conformal coatings where fast, tack-free curing is required.
Functional Silicone Fluids & Resins
Facilitates grafting of Si–H functional fluids onto vinyl-containing molecules for modified silicone oils, resins, and copolymers.
Industrial & Medical-Grade Silicones
Widely applied in medical tubing, implants, seals, and prosthetics due to its high catalytic efficiency and low platinum loading requirements.
Catalyst Development & Mechanistic Studies
Serves as the benchmark Pt(0) source for ligand modification, inhibitor studies, and development of next-generation platinum catalysts in silicone R&D.
Why Choose Aure Chemical for Your Platinum(0)-1,3-divinyl-1,1,3,3-tetramethyldisiloxane complex Supply?
Partner with Aure Chemical for Karstedt's catalyst to benefit from superior catalytic activity, customization flexibility, and secure platinum supply for your silicone and hydrosilylation applications.
Precise Platinum Content Control
Accurate Pt assay and low residual impurities guarantee uniform concentration and reproducible curing performance across batches.
Secure Precious Metal Sourcing
Transparent, responsible platinum procurement with inventory buffering to provide supply stability and competitive pricing.
Technical Silicone Support
Dedicated specialists offer guidance on formulation, inhibitor selection, inhibitor delay, curing optimization, and scale-up for maximum efficiency.
Full Regulatory Compliance
Comprehensive COA, REACH, RoHS, and detailed SDS documentation to facilitate seamless integration into silicone manufacturing and audits.
Sustainability & Recycling Programs
Ethical sourcing practices and platinum recovery/recycling programs aligned with ESG objectives and sustainable silicone production.
Hazards Classification
GHS Classification: Flammable Liquids (Category 3); Acute Toxicity, Oral (Category 4); Acute Toxicity, Inhalation (Category 4); Aquatic Chronic (Category 3)
Hazard Statements: H226: Flammable liquid and vapor; H302 + H332: Harmful if swallowed or if inhaled; H413: May cause long lasting harmful effects to aquatic life
UN Number: UN 1307 (xylene solution)
Hazard Class: 3 (Flammable liquids)
Packing Group: III
GHS02: Flame (flammable)
GHS07: Exclamation mark (acute toxicity)
GHS09: Environment (aquatic hazard)
