181846

Poly(dimethylsiloxane)

analytical standard, average M_w 95,000 (Typical), average M_n 50,000 (Typical)

• Synonym(s): Dimethylpolysiloxane
• Linear Formula: [Si(CH₃)₂O]_n
• CAS Number: 63148-62-9
• MDL number: MFCD00084411
• UNSPSC Code: 41116107
• PubChem Substance ID: 24850959
• NACRES: NA.24

Properties

• grade: analytical standard
• Quality Level: 100
• vapor pressure: 5 mmHg ( 20 °C)
• mol wt: average M_n 50,000 (Typical); average M_w 95,000 (Typical)
• technique(s): gel permeation chromatography (GPC): suitable
• format: neat
• SMILES string: C[Si](C)=O

Description

General description

Poly(dimethylsiloxane) [PDMS] is a polymer. It is a stable silicone rubber. It has been used as ion selective membrane for ion-sensitive field-effect transistors, as spring material in accelerometers, elastomer on a tactile sensor and as flexible encapsulation material in decouple sensors.

This substance is listed on the positive list of the EU regulation 10/2011 for plastics intended to come into contact with food.

Application

It was used in a study performed to understand its molecular weight and molecular weight distribution by off-line coupling of GPC with MALDI mass spectrometer.

Safety Information

• Storage Class Code: 10 - Combustible liquids
• WGK: WGK 1
• Flash Point(F): 214.0 °F - closed cup
• Flash Point(C): 101.1 °C - closed cup
• Personal Protective Equipment: dust mask type N95 (US), Eyeshields, Gloves