1,1,3,3,5,5-Hexamethyltrisiloxane - ≥97%(GC) , CAS No.1189-93-1

CAS: 1189-93-1 Cat. No.: H156953 Molecular Weight: 208.48 Beilstein Registry Number: 1746340 EC Number: 214-716-8 PubChem CID: 6327152
AVAILABLE TO ORDER
GRADE & PURITY ≥97%(GC)
Synonyms
2,4,4,6-tetramethyl-3,5-dioxa-2,4,6-trisilaheptane | BAA18993 | DTXSID10883664 | SCHEMBL133734 | S09700 | 1,3,3,5,5-Hexamethyltrisiloxane | FT-0627103 | MFCD00039788 | 1,1,3,3,5,5-hexamethyl trisiloxane | H1441 | 1,1,3,3,5,5-Hexamethyltrisiloxane | 1,1,3,
Storage
Room temperature,Cool
Shipped In
Normal
 ·  off list, applied to all prices below.
Size
Status
Price
Qty
5ml
H156953-5ml
10
$21.90
25ml
H156953-25ml
7
$69.90
100ml
H156953-100ml
1
$191.90
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Why this grade

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

🌡

Storage & shipping

Room temperature,Cool 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 2 peer-reviewed publications across chromatography, organic synthesis, and cross-coupling reactions.

Specifications

Synonyms
2, 4, 4, 6-tetramethyl-3, 5-dioxa-2, 4, 6-trisilaheptane | BAA18993 | DTXSID10883664 | SCHEMBL133734 | S09700 | 1, 3, 3, 5, 5-Hexamethyltrisiloxane | FT-0627103 | MFCD00039788 | 1, 1, 3, 3, 5, 5-hexamethyl trisiloxane | H1441 | 1, 1, 3, 3, 5, 5-Hexamethyltrisiloxane | 1, 1, 3,
Specifications & Purity
≥97%(GC)
Storage
Room temperature, Cool
Shipped In
Normal
Purity
≥97%(GC)
Names and Identifiers
Pubchem Sid488195700
Pubchem Sid Urlhttps://pubchem.ncbi.nlm.nih.gov/substance/488195700
Canonical SmilesC[Si](C)O[Si](C)(C)O[Si](C)C
InChIKeyYTEISYFNYGDBRV-UHFFFAOYSA-N
INCHI1S/C6H18O2Si3/c1-9(2)7-11(5,6)8-10(3)4/h1-6H3
Isomeric SMILES C[Si](C)O[Si](C)(C)O[Si](C)C
WGK Germany 3
PubChem CID 6327152
UN Number 1993
Packing Group II
Molecular Weight 208.48
Beilstein 1746340

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.

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

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.

11 results found

Lot NumberCertificate TypeDateItem
A2615317Certificate of AnalysisDec 29, 2025 H156953
A2615318Certificate of AnalysisDec 29, 2025 H156953
H1715017Certificate of AnalysisMar 04, 2025 H156953
J2424601Certificate of AnalysisOct 12, 2024 H156953
J2424602Certificate of AnalysisOct 12, 2024 H156953
J2527188Certificate of AnalysisOct 12, 2024 H156953
D23142443Certificate of AnalysisAug 10, 2022 H156953
D23142452Certificate of AnalysisAug 10, 2022 H156953
J2221422Certificate of AnalysisAug 10, 2022 H156953
J2221459Certificate of AnalysisAug 10, 2022 H156953
J2221463Certificate of AnalysisAug 10, 2022 H156953

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Chemical and Physical Properties
SolubilitySlightly miscible with water.
SensitivityMoisture sensitive.
Refractive Index1.383
Flash Point(°F)68°F
Flash Point(°C)20℃
Boil Point(°C)128°C
Melt Point(°C)-67℃
Molecular Weight206.460 g/mol
XLogP3
Hydrogen Bond Donor Count0
Hydrogen Bond Acceptor Count2
Rotatable Bond Count4
Exact Mass206.061 Da
Monoisotopic Mass206.061 Da
Topological Polar Surface Area18.500 Ų
Heavy Atom Count11
Formal Charge0
Complexity102.000
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
Citations of This Product
References
1. Muyao Gao, Tianhao Li, Wenjing Kong, Xun Sun, Li Liu, Bing Li, Yujie Song, Ming Liu.  (2023)  Novel liquid phthalonitrile monomers towards high performance resin.  EUROPEAN POLYMER JOURNAL,      [PMID:] [10.1016/j.eurpolymj.2023.112027]
2. Chunling Zhang, Jingshi Liang, Yichen Yang, Bo Liu, Chunzu Cheng, Chunhua Hu.  (2024)  An anticorrosive coating based on polysiloxane with good chemical stability and long-term corrosion resistance.  MATERIALS CHEMISTRY AND PHYSICS,      [PMID:] [10.1016/j.matchemphys.2024.129717]
Solution Calculators
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