Cas no 18642-94-9 (Disiloxane,1,1,3,3-tetramethyl-1,3-dioctyl-)

Disiloxane,1,1,3,3-tetramethyl-1,3-dioctyl- is a branched organosilicon compound characterized by its unique molecular structure, featuring two octyl groups and two methyl groups attached to a disiloxane backbone. This configuration imparts favorable properties such as high thermal stability, low surface tension, and excellent hydrophobicity. The compound is commonly utilized as a lubricant, surfactant, or intermediate in silicone chemistry due to its chemical inertness and compatibility with organic and inorganic matrices. Its balanced volatility and viscosity make it suitable for applications requiring controlled release or uniform film formation. The presence of long alkyl chains enhances solubility in nonpolar solvents, broadening its utility in coatings and specialty fluids.
Disiloxane,1,1,3,3-tetramethyl-1,3-dioctyl- structure
18642-94-9 structure
Product Name:Disiloxane,1,1,3,3-tetramethyl-1,3-dioctyl-
CAS No:18642-94-9
MF:C20H46OSi2
MW:358.749648571014
MDL:MFCD00514608
CID:123100
PubChem ID:519593
Update Time:2025-06-13

Disiloxane,1,1,3,3-tetramethyl-1,3-dioctyl- Chemical and Physical Properties

Names and Identifiers

    • Disiloxane,1,1,3,3-tetramethyl-1,3-dioctyl-
    • 1,3-di-n-octyltetramethyldisiloxane
    • 1,1,3,3-Tetramethyl-1,3-dioctyldisiloxane
    • 1,3-Di-n-octyl-1,1,3,3-Tetramethyl Disiloxane
    • 1,3-DIOCTYLTETRAMETHYLDISILOXANE
    • 1,1,2,2-tetramethyl-1,2-di-n-octyldisiloxane
    • 1,1,3,3-Tetramethyl-1,3-dioctyl-disiloxan
    • 1,1,3,3-tetramethyl-1,3-dioctyl-disiloxane
    • E85279
    • MFCD00514608
    • A880656
    • dimethyloctylsilyl ether
    • CS-0448806
    • 1,3-Di-N-Ctyl-1,1,3,3-Tetramethyl Disiloxane
    • AS-75751
    • VZSZUXBTVQNMOY-UHFFFAOYSA-N
    • AKOS015909262
    • SCHEMBL771775
    • 18642-94-9
    • 1,1,3,3-Tetramethyl-1,3-Dictyldisiloxane
    • [dimethyl(octyl)silyl]oxy-dimethyl-octylsilane
    • {[dimethyl(octyl)silyl]oxy}dimethyloctylsilane
    • 1,3-Di-N-Ctyltetramethyldisiloxane
    • MDL： MFCD00514608
    • Inchi： 1S/C20H46OSi2/c1-7-9-11-13-15-17-19-22(3,4)21-23(5,6)20-18-16-14-12-10-8-2/h7-20H2,1-6H3
    • InChI Key： VZSZUXBTVQNMOY-UHFFFAOYSA-N
    • SMILES： [Si](C)(C)(CCCCCCCC)O[Si](C)(C)CCCCCCCC

Computed Properties

  • Exact Mass: 358.30900
  • Monoisotopic Mass: 358.30871916g/mol
  • Isotope Atom Count: 0
  • Hydrogen Bond Donor Count: 0
  • Hydrogen Bond Acceptor Count: 1
  • Heavy Atom Count: 23
  • Rotatable Bond Count: 16
  • Complexity: 238
  • Covalently-Bonded Unit Count: 1
  • Defined Atom Stereocenter Count: 0
  • Undefined Atom Stereocenter Count : 0
  • Defined Bond Stereocenter Count: 0
  • Undefined Bond Stereocenter Count: 0
  • Topological Polar Surface Area: 9.2?2

Experimental Properties

  • Density: 0.891
  • Boiling Point: 122 °C
  • Flash Point: >110°C
  • Refractive Index: 1.4740
  • PSA: 9.23000
  • LogP: 8.13420
  • Vapor Pressure: 0.0±0.7 mmHg at 25°C

Disiloxane,1,1,3,3-tetramethyl-1,3-dioctyl- Security Information

Disiloxane,1,1,3,3-tetramethyl-1,3-dioctyl- Customs Data

  • HS CODE：2934999090
  • Customs Data：

    China Customs Code:

    2934999090

    Overview:

    2934999090. Other heterocyclic compounds. VAT:17.0%. Tax refund rate:13.0%. Regulatory conditions:nothing. MFN tariff:6.5%. general tariff:20.0%

    Declaration elements:

    Product Name, component content, use to

    Summary:

    2934999090. other heterocyclic compounds. VAT:17.0%. Tax rebate rate:13.0%. . MFN tariff:6.5%. General tariff:20.0%

Disiloxane,1,1,3,3-tetramethyl-1,3-dioctyl- Pricemore >>

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