1,1,1,3,5,7,7,7-Octamethyl-3,5-tetrasiloxanediol

CAS Registry Number®

108909-17-7

CAS Name

1,1,1,3,5,7,7,7-Octamethyl-3,5-tetrasiloxanediol

Molecular Formula

C8H26O5Si4

Molecular Mass

314.63

Cite this Page

1,1,1,3,5,7,7,7-Octamethyl-3,5-tetrasiloxanediol.   CAS Common Chemistry.   CAS, a division of the American Chemical Society, n.d.   http://commonchemistry.cas.org/detail?cas_rn=108909-17-7 (retrieved 2025-07-10) (CAS RN: 108909-17-7).  Licensed under the Attribution-Noncommercial 4.0 International License (CC BY-NC 4.0).

Compound Properties

  • Boiling Point (1)

    100-105 °C @ Press: 1.5 Torr

  • Melting Point (2)

    -27 °C

  • Density (2)

    0.9982 g/cm³ @ Temp: 20 °C

Source(s)

Other Names and Identifiers

InChI

InChI=1S/C8H26O5Si4/c1-14(2,3)11-16(7,9)13-17(8,10)12-15(4,5)6/h9-10H,1-8H3

InChIKey

InChIKey=LDRYIWNADGOBAR-UHFFFAOYSA-N

SMILES

O([Si](O[Si](C)(C)C)(C)O)[Si](O[Si](C)(C)C)(C)O

Canonical SMILES

O[Si](O[Si](O)(O[Si](C)(C)C)C)(O[Si](C)(C)C)C

Other Names for this Substance

  • 3,5-Tetrasiloxanediol, 1,1,1,3,5,7,7,7-octamethyl-
  • 3,5-Tetrasiloxanediol, octamethyl-
  • 1,1,1,3,5,7,7,7-Octamethyl-3,5-tetrasiloxanediol
  • 1,1,1,3,5,7,7,7-Octamethyltetrasiloxane-3,5-diol
  • 3,5-Dihydroxy-1,1,1,3,5,7,7,7-octamethyltetrasiloxane

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Deleted or Replaced CAS Registry Numbers

189289-74-5

CAS INSIGHTSTM
Aspergillus fungus, computer illustration. This is a toxic fungus that causes diseases in humans.