469319

Poly(dimethylsiloxane)

viscosity 1.0 cSt (25 °C)

• Synonym(s): Octamethyltrisiloxane
• Linear Formula: [(CH₃)₃SiO]₂Si(CH₃)₂
• CAS Number: 107-51-7
• Molecular Weight: 236.53
• Beilstein/REAXYS Number: 1753063
• EC Number: 203-497-4
• MDL number: MFCD00008264
• UNSPSC Code: 12162002
• PubChem Substance ID: 24870584
• NACRES: NA.23

Properties

• vapor density: >1 (vs air)
• refractive index: n20/D 1.384 (lit.)
• viscosity: 1.0 cSt(25 °C)
• bp: 153 °C (lit.)
• mp: −82 °C (lit.)
• density: 0.82 g/mL at 25 °C (lit.)
• SMILES string: C[Si](C)(C)O[Si](C)(C)O[Si](C)(C)C
• InChI: 1S/C8H24O2Si3/c1-11(2,3)9-13(7,8)10-12(4,5)6/h1-8H3
• InChI key: CXQXSVUQTKDNFP-UHFFFAOYSA-N

Description

General description

Poly(dimethylsiloxane) (PDMS), also known as dimethicone, is an organosilicon compound that is widely used as a siloxane based elastomer. It is a hydrophobic material with attractive physical and chemical properties such as elasticity, optical transparency, tunable surface chemistry, and low electrical conductivity.

Application

PDMS can be used in microfluidic devices, nanolithography, and other membrane based applications.

Safety Information

• pictograms: GHS02
• signalword: Warning
• hcodes: H226
• pcodes: P210 - P233 - P240 - P241 - P242 - P243
• Hazard Classifications: Flam. Liq. 3
• Storage Class: 3 - Flammable liquids
• wgk_germany: WGK 3
• flash_point_f: 84.2 °F - (External MSDS)
• flash_point_c: 29 °C - (External MSDS)
• ppe: Eyeshields, Faceshields, Gloves, type ABEK (EN14387) respirator filter