Karstedt Catalyst Solution - in xylene,Pt:~2% , CAS No.68478-92-2

CAS: 68478-92-2 Cat. No.: K110178 Formula: O[Si(CH3)2CH=CH2]2Pt Molecular Weight: 381.48 EC Number: 270-844-4
AVAILABLE TO ORDER
GRADE & PURITY in xylene,Pt:~2%
Synonyms
Umicore HS221 | Platinum(0)-1,3-divinyl-1,1,3,3-tetramethyldisiloxane | RCNRJBWHLARWRP-UHFFFAOYSA-N | SCHEMBL63112 | ETHENYL[(ETHENYLDIMETHYLSILYL)OXY]DIMETHYLSILANE PLATINUM | 1,1,3,3-tetramethyl-1,3-divinyldisiloxane, platinum salt
Storage
Room temperature,Argon charged
Shipped In
Normal
★
Size
Germany (EU)
USA*
Price
Qty
1g
K110178-1g
—
8 In stock
€28.55
5g
K110178-5g
—
In stock ≥10
€72.80
25g
K110178-25g
—
In stock ≥10
€286.27
Enter a quantity for the sizes you want to add.
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Why this grade

in xylene,Pt:~2% for sensitive chromatographic and analytical workflows requiring minimal baseline interference.

🌡

Storage & shipping

Room temperature,Argon charged Ships Normal Check lot-specific COA for exact specifications.

📋

Quality documents

SDS, COA, datasheet, and spec sheet available for download. Lot-specific COA accessible via lot number lookup.

📚

Literature proof

Cited in 70 peer-reviewed publications across chromatography, organic synthesis, and cross-coupling reactions.

Overview

A powerful hydrosilylation catalyst for preparation of trans-β-silanes. Hydrosilylation Catalysts

Specifications

Synonyms
Umicore HS221 | Platinum(0)-1,3-divinyl-1,1,3,3-tetramethyldisiloxane | RCNRJBWHLARWRP-UHFFFAOYSA-N | SCHEMBL63112 | ETHENYL[(ETHENYLDIMETHYLSILYL)OXY]DIMETHYLSILANE PLATINUM | 1,1,3,3-tetramethyl-1,3-divinyldisiloxane, platinum salt
Specifications & Purity
in xylene,Pt:~2%
Biochemical and Physiological Mechanisms
高效铂金催化剂在硅橡胶硫化过程中可以在低温下迅速进行,且无副产物,不变色,在硅氢加成反应中反应迅速。
Storage
Room temperature,Argon charged
Shipped In
Normal
Names and Identifiers
Pubchem Sid
Canonical Smiles
C[Si](C)(C=C)O[Si](C)(C)C=C.[Pt]
IUPAC Name
ethenyl-[ethenyl(dimethyl)silyl]oxy-dimethylsilane;platinum
InChIKey
RCNRJBWHLARWRP-UHFFFAOYSA-N
INCHI
1S/C8H18OSi2.Pt/c1-7-10(3,4)9-11(5,6)8-2;/h7-8H,1-2H2,3-6H3;
Isomeric SMILES
C[Si](C)(C=C)O[Si](C)(C)C=C.[Pt]
WGK Germany
3
Molecular Weight
381.48
Reaxy-Rn
11327506
Reaxys-RN_link_address
https://www.reaxys.com/reaxys/secured/hopinto.do?context=S&query=IDE.XRN=11327506&ln=

Documentation

📋 Safety Data Sheet (SDS)

Comprehensive hazard, handling, storage, and regulatory compliance document.

<<<<<<< HEAD Download SDS → ======= Download SDS → >>>>>>> release248-p3

✅ Certificate of Analysis (COA)

Lot-specific quality data. Enter your lot number to retrieve the exact COA.

Look up COA →

📊 Datasheet

Quick-reference summary of product specifications and applications.

View datasheet →

🔬 Specification Sheet

Full quality attributes and acceptance criteria for this grade.

View spec sheet →

Advanced Data

Taxonomic Classification

Taxonomy Tree

KingdomOrganic compounds
SuperclassOrganometallic compounds
ClassOrganometalloid compounds
SubclassOrganosilicon compounds
Intermediate Tree Nodes Siloxanes
Direct ParentDisiloxanes
Alternative Parents Organoheterosilanes  Organic transition metal salts  Organic metalloid salts  Organic oxygen compounds  Hydrocarbon derivatives  
Molecular FrameworkAliphatic acyclic compounds
Substituents Disiloxane - Organoheterosilane - Organic metalloid salt - Organic transition metal salt - Organic oxygen compound - Hydrocarbon derivative - Aliphatic acyclic compound
DescriptionThis compound belongs to the class of organic compounds known as disiloxanes. These are organosilicon compounds with the general formula H[Si](R)(R')O[Si](H)(R'')R''' (R= organyl, R'-R'''= H or organyl).
External Descriptors Not available
3D Structure
Interactive Chemical Structure Model





Certificates (CoA,COO,BSE/TSE and Analysis Chart)
C of A & Other Certificates(BSE/TSE, COO):
Analytical Chart:

Find and download the COA for your product by matching the lot number on the packaging.

25 results found

Lot NumberCertificate TypeDateItem
K2422460K2422460Certificate of AnalysisAug 04, 2026 K110178
L2209050L2209050Certificate of AnalysisJul 06, 2026 K110178
D2622356D2622356Certificate of AnalysisApr 15, 2026 K110178
D2622357D2622357Certificate of AnalysisApr 15, 2026 K110178
D2622358D2622358Certificate of AnalysisApr 15, 2026 K110178
J2531448J2531448Certificate of AnalysisOct 24, 2025 K110178
J2531447J2531447Certificate of AnalysisOct 24, 2025 K110178
J2531425J2531425Certificate of AnalysisOct 24, 2025 K110178
L2110065L2110065Certificate of AnalysisJun 10, 2025 K110178
L2110063L2110063Certificate of AnalysisJun 06, 2025 K110178
B2528577B2528577Certificate of AnalysisFeb 15, 2025 K110178
F2528111F2528111Certificate of AnalysisFeb 15, 2025 K110178
B2528562B2528562Certificate of AnalysisFeb 15, 2025 K110178
D2128135D2128135Certificate of AnalysisNov 15, 2024 K110178
D2128137D2128137Certificate of AnalysisNov 07, 2024 K110178
K2422458K2422458Certificate of AnalysisSep 19, 2024 K110178
K2422459K2422459Certificate of AnalysisSep 19, 2024 K110178
L2209049L2209049Certificate of AnalysisSep 06, 2024 K110178
G2415351G2415351Certificate of AnalysisJun 12, 2024 K110178
K2323154K2323154Certificate of AnalysisNov 14, 2023 K110178
D2128136D2128136Certificate of AnalysisFeb 08, 2023 K110178
E2411020E2411020Certificate of AnalysisOct 25, 2022 K110178
L2209048L2209048Certificate of AnalysisOct 25, 2022 K110178
L2209665L2209665Certificate of AnalysisOct 25, 2022 K110178
L2313047L2313047Certificate of AnalysisOct 25, 2022 K110178
Chemical and Physical Properties
SolubilityMiscible with toluene, xylene, isopropyl alcohol, double-vinyl silicone oil and vinyl terminated poly(dimethylsiloxane). Immiscible with water
SensitivityMoisture sensitive , air sensitive
x_flash_point_drop_centigrade28 °C
x_boil_point_char138 °C
x_melt_point_char12-13 °C
Molecular Weight381.480 g/mol
XLogP3
Hydrogen Bond Donor Count0
Hydrogen Bond Acceptor Count1
Rotatable Bond Count4
Exact Mass381.054 Da
Monoisotopic Mass381.054 Da
Topological Polar Surface Area9.200 Ų
Heavy Atom Count12
Formal Charge0
Complexity143.000
Isotope Atom Count0
Defined Atom Stereocenter Count0
Undefined Atom Stereocenter Count0
Defined Bond Stereocenter Count0
Undefined Bond Stereocenter Count0
The total count of all stereochemical bonds0
Covalently-Bonded Unit Count2
FAQs and Articles
Citations of This Product
Solution Calculators
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