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: 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
• Signal Word: Warning
• Hazard Statements: H226
• Precautionary Statements: P210 - P233 - P240 - P241 - P242 - P243
• Hazard Classifications: Flam. Liq. 3
• Storage Class Code: 3 - Flammable liquids
• WGK: WGK 3
• Flash Point(F): 84.2 °F - (External MSDS)
• Flash Point(C): 29 °C - (External MSDS)
• Personal Protective Equipment: dust mask type N95 (US), Eyeshields, Gloves