Polydimethylsiloxane

Polydimethylsiloxane (PDMS), also known as dimethylpolysiloxane or dimethicone, is a silicone polymer with a wide variety of uses, from cosmetics to industrial lubrication.

Polydimethylsiloxane
Names
IUPAC name
poly(dimethylsiloxane)
Other names
PDMS
dimethicone
dimethylpolysiloxane
E900
Identifiers
3D model (JSmol)
ChemSpider
  • None
ECHA InfoCard 100.126.442
E number E900 (glazing agents, ...)
UNII
  • n = 12: C[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)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)C
Properties
CH3[Si(CH3)2O]nSi(CH3)3
Density 0.965 g/cm3
Melting point N/A, vitrifies
Boiling point N/A, vitrifies
Pharmacology
P03AX05 (WHO)
Hazards
NFPA 704 (fire diamond)
1
1
0
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
N verify (what is YN ?)
Infobox references

It is particularly known for its unusual rheological (or flow) properties. PDMS is optically clear and, in general, inert, non-toxic, and non-flammable. It is one of several types of silicone oil (polymerized siloxane). Its applications range from contact lenses and medical devices to elastomers; it is also present in shampoos (as it makes hair shiny and slippery), food (antifoaming agent), caulk, lubricants and heat-resistant tiles.

This article is issued from Wikipedia. The text is licensed under Creative Commons - Attribution - Sharealike. Additional terms may apply for the media files.