1,3-Dimethoxy-1,1,3,3-Tetramethyl Disiloxane - ≥97% , CAS No.18187-24-1

CAS: 18187-24-1 Cat. No.: D305237 Molecular Weight: 194.38 EC Number: 811-448-9
AVAILABLE TO ORDER
GRADE & PURITY ≥97%
Synonyms
A880959 | AMY42252 | TETRAMETHYL-1,3-DIMETHOXYDISILOXANE | methoxy-[methoxy(dimethyl)silyl]oxy-dimethylsilane | Disiloxane, 1,3-dimethoxy-1,1,3,3-tetramethyl-, | FT-0694312 | SCHEMBL297861 | Disiloxane,1,3-dimethoxy-1,1,3,3-tetramethyl- | s16030 | Disilox
Storage
Store at 2-8°C,Argon charged
Shipped In
Wet ice
 ·  off list, applied to all prices below.
Size
Status
Price
Qty
1ml
D305237-1ml
8-12 wks(?) Production requires sourcing of materials. We appreciate your patience and understanding.
$23.90
5ml
D305237-5ml
8-12 wks(?) Production requires sourcing of materials. We appreciate your patience and understanding.
$63.90
25ml
D305237-25ml
8-12 wks(?) Production requires sourcing of materials. We appreciate your patience and understanding.
$552.90
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Why this grade

≥97% for sensitive chromatographic and analytical workflows requiring minimal baseline interference.

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Storage & shipping

Store at 2-8°C,Argon charged Ships Wet ice Check lot-specific COA for exact specifications.

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Quality documents

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

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Literature proof

Cited in 0 peer-reviewed publications across chromatography, organic synthesis, and cross-coupling reactions.

Specifications

Synonyms
A880959 | AMY42252 | TETRAMETHYL-1, 3-DIMETHOXYDISILOXANE | methoxy-[methoxy(dimethyl)silyl]oxy-dimethylsilane | Disiloxane, 1, 3-dimethoxy-1, 1, 3, 3-tetramethyl-, | FT-0694312 | SCHEMBL297861 | Disiloxane, 1, 3-dimethoxy-1, 1, 3, 3-tetramethyl- | s16030 | Disilox
Specifications & Purity
≥97%
Storage
Store at 2-8°C, Argon charged
Shipped In
Wet ice
This product requires cold chain shipping. Ground and other economy services are not available.
Purity
≥97%
Names and Identifiers
Canonical SmilesCO[Si](C)(C)O[Si](C)(C)OC
IUPAC Namemethoxy-[methoxy(dimethyl)silyl]oxy-dimethylsilane
InChIKeyXKINWJBZPLWKCW-UHFFFAOYSA-N
INCHI1S/C6H18O3Si2/c1-7-10(3,4)9-11(5,6)8-2/h1-6H3
Isomeric SMILES CO[Si](C)(C)O[Si](C)(C)OC
Molecular Weight 194.38
Reaxy-Rn 1746353
Reaxys-RN_link_address https://www.reaxys.com/reaxys/secured/hopinto.do?context=S&query=IDE.XRN=1746353&ln=

Documentation

📋 Safety Data Sheet (SDS)

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

Download SDS →

✅ Certificate of Analysis (COA)

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

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📊 Datasheet

Quick-reference summary of product specifications and applications.

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🔬 Specification Sheet

Full quality attributes and acceptance criteria for this grade.

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Advanced Data

Taxonomic Classification

Taxonomy Tree

KingdomOrganic compounds
SuperclassOrganometallic compounds
ClassOrganometalloid compounds
SubclassOrganosilicon compounds
Intermediate Tree Nodes Not available
Direct ParentSiloxanes
Alternative Parents Silyl ethers  Organoheterosilanes  Organic metalloid salts  Organooxygen compounds  Hydrocarbon derivatives  
Molecular FrameworkAliphatic acyclic compounds
Substituents Siloxane - Silyl ether - Organoheterosilane - Organic metalloid salt - Organic oxygen compound - Hydrocarbon derivative - Organic salt - Organooxygen compound - Aliphatic acyclic compound
DescriptionThis compound belongs to the class of organic compounds known as siloxanes. These are saturated silicon-oxygen hydrides with unbranched or branched chains of alternating silicon and oxygen atoms (each silicon atom is separated from its nearest silicon neighbours by single oxygen atoms). The general structure of unbranched siloxanes is H3Si[OSiH2]nOSiH3. H3Si[OSiH2]nOSiH[OSiH2OSiH3]2 is an example of a branched siloxane. By extension hydrocarbyl derivatives are commonly included.
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.

5 results found

Lot NumberCertificate TypeDateItem
A2627152Certificate of AnalysisOct 28, 2025 D305237
A2629094Certificate of AnalysisOct 28, 2025 D305237
K2513459Certificate of AnalysisOct 28, 2025 D305237
K2513460Certificate of AnalysisOct 28, 2025 D305237
K2513586Certificate of AnalysisOct 28, 2025 D305237
Chemical and Physical Properties
Flash Point(°F)82°F
Flash Point(°C)28°C
Boil Point(°C)139°C
Molecular Weight194.380 g/mol
XLogP3
Hydrogen Bond Donor Count0
Hydrogen Bond Acceptor Count3
Rotatable Bond Count4
Exact Mass194.079 Da
Monoisotopic Mass194.079 Da
Topological Polar Surface Area27.700 Ų
Heavy Atom Count11
Formal Charge0
Complexity111.000
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 Count1
Solution Calculators
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