1,1,1,3,5,7,7,7-Octamethyltetrasiloxane - ≥95% , CAS No.16066-09-4

CAS: 16066-09-4 Cat. No.: O160042 Molecular Weight: 282.63 EC Number: 240-209-6 PubChem CID: 6327318

GRADE & PURITY ≥95%

Synonyms

AKOS015899856 | Bis(trimethylsiloxy)dimethyldisiloxane | 2,2,4,6,8,8-HEXAMETHYL-3,5,7-TRIOXA-2,4,6,8-TETRASILANONANE | 1,3-BIS(TRIMETHYLSILOXY)-1,3-DIMETHYLDISILOXANE | DTXSID00871252 | O0397 | 3H,5H-Ctamethyltetrasiloxane | 1,1,1,3,5,7,7,7-Octamethyltetr

Storage

Argon charged,Room temperature

Shipped In

Normal

Specifications

Synonyms

AKOS015899856 | Bis(trimethylsiloxy)dimethyldisiloxane | 2, 2, 4, 6, 8, 8-HEXAMETHYL-3, 5, 7-TRIOXA-2, 4, 6, 8-TETRASILANONANE | 1, 3-BIS(TRIMETHYLSILOXY)-1, 3-DIMETHYLDISILOXANE | DTXSID00871252 | O0397 | 3H, 5H-Ctamethyltetrasiloxane | 1, 1, 1, 3, 5, 7, 7, 7-Octamethyltetr

Specifications & Purity

≥95%

Storage

Argon charged, Room temperature

Shipped In

Normal

Purity

≥95%

Names and Identifiers

• Pubchem Sid: 504764044
• Pubchem Sid Url: https://pubchem.ncbi.nlm.nih.gov/substance/504764044
• Canonical Smiles: C[Si](O[Si](C)O[Si](C)(C)C)O[Si](C)(C)C
• InChIKey: OHSYWAVRSCQMHG-UHFFFAOYSA-N
• INCHI: 1S/C8H24O3Si4/c1-12(10-14(3,4)5)9-13(2)11-15(6,7)8/h1-8H3
• Isomeric SMILES: C[Si](O[Si](C)O[Si](C)(C)C)O[Si](C)(C)C
• PubChem CID: 6327318
• Molecular Weight: 282.63

Taxonomic Classification

Taxonomy Tree

• Kingdom Organic compounds
  • Superclass Organometallic compounds
    • Class Organometalloid compounds
      • Subclass Organosilicon compounds
        • Level5 Organoheterosilanes
          • Level6 Trialkylheterosilanes

• Kingdom: Organic compounds
• Superclass: Organometallic compounds
• Class: Organometalloid compounds
• Subclass: Organosilicon compounds
• Intermediate Tree Nodes: Organoheterosilanes
• Direct Parent: Trialkylheterosilanes
• Alternative Parents: Organic metalloid salts Organic oxygen compounds Hydrocarbon derivatives
• Molecular Framework: Aliphatic acyclic compounds
• Substituents: Trialkylheterosilane - Organic metalloid salt - Organic oxygen compound - Hydrocarbon derivative - Organic salt - Aliphatic acyclic compound
• Description: This compound belongs to the class of organic compounds known as trialkylheterosilanes. These are organoheterosilanes, bearing a silicon atom linked to three alkyl groups and one heteroatom.
• External Descriptors: Not available

Data sources

1. Djoumbou Feunang Y, Eisner R, Knox C, Chepelev L, Hastings J, Owen G, Fahy E, Steinbeck C, Subramanian S, Bolton E, Greiner R, and Wishart DS. ClassyFire: Automated Chemical Classification With A Comprehensive, Computable Taxonomy. Journal of Cheminformatics, 2016, 8:61.

DOI: 10.1186/s13321-016-0174-y

Chemical and Physical Properties

• Sensitivity: Moisture Sensitive
• Refractive Index: 1.39
• Flash Point(°F): 145.4 ℉
• Flash Point(°C): 63°C(lit.)
• Boil Point(°C): 177°C(lit.)
• Molecular Weight: 280.610 g/mol
• Hydrogen Bond Donor Count: 0
• Hydrogen Bond Acceptor Count: 3
• Rotatable Bond Count: 6
• Exact Mass: 280.08 Da
• Monoisotopic Mass: 280.08 Da
• Topological Polar Surface Area: 27.700 Ų
• Heavy Atom Count: 15
• Formal Charge: 0
• Complexity: 167.000
• Isotope Atom Count: 0
• Defined Atom Stereocenter Count: 0
• Undefined Atom Stereocenter Count: 2
• Defined Bond Stereocenter Count: 0
• Undefined Bond Stereocenter Count: 0
• The total count of all stereochemical bonds: 0
• Covalently-Bonded Unit Count: 1

XLogP3

References

1. Zixuan Zhu, Xiao Wang, Qingyuan Bian, Lifei Zhi, Yaowen Zhuo, Lingxiao Guo, Guoyong Wang.  (2025)  Synthesis, Characterization, and Interfacial Properties of Butynediol Ethoxylate-Based Tetrasiloxanes as Low-Foam Surfactants.  LANGMUIR,      [PMID:41195749] [10.1021/acs.langmuir.5c04770]