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Hexadecamethylcyclooctasiloxane

CAS Registry Number®

556-68-3

CAS Name

Hexadecamethylcyclooctasiloxane

Molecular Formula

C16H48O8Si8

Molecular Mass

593.23

Cite this Page

Hexadecamethylcyclooctasiloxane.   CAS Common Chemistry.   CAS, a division of the American Chemical Society, n.d.   http://commonchemistry.cas.org/detail?cas_rn=556-68-3 (retrieved 2025-06-09) (CAS RN: 556-68-3).  Licensed under the Attribution-Noncommercial 4.0 International License (CC BY-NC 4.0).

Compound Properties

  • Boiling Point (1)

    175 °C @ Press: 20 Torr

  • Melting Point (2)

    31.5 °C

  • Density (3)

    1.177 g/cm³ @ Temp: 25 °C

Source(s)

Other Names and Identifiers

InChI

InChI=1S/C16H48O8Si8/c1-25(2)17-26(3,4)19-28(7,8)21-30(11,12)23-32(15,16)24-31(13,14)22-29(9,10)20-27(5,6)18-25/h1-16H3

InChIKey

InChIKey=XKJMJYZFAWYREL-UHFFFAOYSA-N

SMILES

C[Si]1(C)O[Si](C)(C)O[Si](C)(C)O[Si](C)(C)O[Si](C)(C)O[Si](C)(C)O[Si](C)(C)O[Si](C)(C)O1

Canonical SMILES

O1[Si](O[Si](O[Si](O[Si](O[Si](O[Si](O[Si](O[Si]1(C)C)(C)C)(C)C)(C)C)(C)C)(C)C)(C)C)(C)C

Other Names for this Substance

  • Cyclooctasiloxane, 2,2,4,4,6,6,8,8,10,10,12,12,14,14,16,16-hexadecamethyl-
  • Cyclooctasiloxane, hexadecamethyl-
  • 2,2,4,4,6,6,8,8,10,10,12,12,14,14,16,16-Hexadecamethylcyclooctasiloxane
  • Hexadecamethylcyclooctasiloxane

CAS INSIGHTSTM
A graphic depiction of “six trends” hexagon-shaped images