Polydimethylsiloxane

Polydimethylsiloxane
	PDMS
	PDMS
Names
	IUPAC name poly(dimethylsiloxane)
	Other names PDMS; dimethicone; dimethylpolysiloxane; E900;
Identifiers
CAS Number	9006-65-9 ;
3D model (JSmol)	n = 12: Interactive image;
ChemSpider	None;
ECHA InfoCard	100.126.442
E number	E900 (glazing agents, ...)
UNII	92RU3N3Y1O ;
CompTox Dashboard (EPA)	DTXSID0049573 ;
	SMILES 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
Chemical formula	CH3[Si(CH3)2O]nSi(CH3)3
Density	0.965 g/cm3
Melting point	N/A, vitrifies
Boiling point	N/A, vitrifies
Pharmacology
ATC code	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). verify (what is ?) Infobox references

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]

PDMS is particularly known for its unusual rheological (or flow) properties. It is optically clear and, in general, inert, non-toxic, and non-flammable. It is one of several types of silicone oil (polymerized siloxane). The applications of PDMS 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.

^ 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. Bibcode:2022IJHMT.19823399S. doi:10.1016/j.ijheatmasstransfer.2022.123399. S2CID 252242911.
^ "Linear Polydimethylsiloxanes". ECETOC (second ed.). 2011-12-28.
^ 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.