Back متعدد ثنائي ميثيل السيلوكسان Arabic پولیدیومتیل‌سیلوکسان AZB Polydimethylsiloxan German Polidimetilsiloxano Spanish پلی‌دی‌متیل‌سیلوکسان Persian Polydimetyylisiloksaani Finnish Polydiméthylsiloxane French Dimetil-polisziloxán Hungarian Polidimetilsilossano Italian ジメチルポリシロキサン Japanese

Polydimethylsiloxane

Polydimethylsiloxane
PDMS
PDMS
Names
IUPAC name
poly(dimethylsiloxane)
Other names
  • PDMS
  • dimethicone
  • dimethylpolysiloxane
  • E900
Identifiers
3D model (JSmol)
ChemSpider
  • None
ECHA InfoCard 100.126.442 Edit this at Wikidata
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)
NFPA 704 four-colored diamondHealth 1: Exposure would cause irritation but only minor residual injury. E.g. turpentineFlammability 1: Must be pre-heated before ignition can occur. Flash point over 93 °C (200 °F). E.g. canola oilInstability 0: Normally stable, even under fire exposure conditions, and is not reactive with water. E.g. liquid nitrogenSpecial hazards (white): no code
1
1
0
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Polydimethylsiloxane (PDMS), also known as dimethylpolysiloxane or dimethicone, is a silicone polymer with a wide variety of uses, from cosmetics to industrial lubrication and passive daytime radiative cooling.[1][2][3]

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.

  1. ^ Simsek, Eylul; Mandal, Jyotirmoy; Raman, Aaswath P.; Pilon, Laurent (December 2022). "Dropwise condensation reduces selectivity of sky-facing radiative cooling surfaces". International Journal of Heat and Mass Transfer. 198: 123399. doi:10.1016/j.ijheatmasstransfer.2022.123399. S2CID 252242911.
  2. ^ "Linear Polydimethylsiloxanes". ECETOC (second ed.). 2011-12-28.
  3. ^ Wolf, Marc P.; Salieb-Beugelaar, Georgette B.; Hunziker, Patrick (2018). "PDMS with designer functionalities—Properties, modifications strategies, and applications". Progress in Polymer Science. 83. Elsevier BV: 97–134. doi:10.1016/j.progpolymsci.2018.06.001. ISSN 0079-6700. S2CID 102916647.

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