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CAS 6166-86-5

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Pentamethylcyclopentasiloxane

Description:
Pentamethylcyclopentasiloxane, with the CAS number 6166-86-5, is a cyclic siloxane compound characterized by its unique structure, which consists of a five-membered ring containing silicon and oxygen atoms. This compound features five methyl groups attached to the silicon atoms, contributing to its hydrophobic properties and low surface tension. Pentamethylcyclopentasiloxane is typically colorless and odorless, exhibiting a low viscosity and high thermal stability, making it suitable for various applications in cosmetics, personal care products, and industrial formulations. Its chemical stability and resistance to degradation under environmental conditions enhance its utility in formulations requiring long-lasting performance. Additionally, it is known for its ability to impart a silky feel and improve the spreadability of products. However, like many siloxanes, its environmental impact and potential bioaccumulation are subjects of ongoing research and regulatory scrutiny. Overall, pentamethylcyclopentasiloxane is valued for its functional properties in enhancing product performance while being mindful of environmental considerations.
Formula:C5H20O5Si5
InChI:InChI=1S/C5H20O5Si5/c1-11-6-12(2)8-14(4)10-15(5)9-13(3)7-11/h11-15H,1-5H3
InChI key:InChIKey=HGPDWMTUQRNTQT-UHFFFAOYSA-N
SMILES:C[SiH]1O[SiH](C)O[SiH](C)O[SiH](C)O[SiH](C)O1
Synonyms:
  • 1,3,5,7,9-Pentamethylcyclopentasiloxane
  • 2,2,4,4,6-Pentamethyl-1,3,5,7,9,2,4,6,8,10-Pentoxapentasilecane
  • 2,4,6,8,10-Pentamethyl-1,3,5,7,9,2,4,6,8,10-Pentoxapentasilecane
  • 2,4,6,8,10-Pentamethyl-1,3,5,7,9,2,4,6,8,10-Pentoxapentasilecane-2,4,6,8,10-Pentayl
  • 2,4,6,8,10-Pentamethyl-1,3,5,7,9,2,4,6,8,10-pentaoxapentasilecane
  • 2,4,6,8,10-Pentamethylcyclopentasiloxan
  • 2,4,6,8,10-Pentamethylcyclopentasiloxane
  • 2,4,6,8,10-Pentametilciclopentasiloxano
  • Cyclopentasiloxane, 2,4,6,8,10-pentamethyl-
  • Cyclopentasiloxane, Pentamethyl-
  • See more synonyms
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