433012

Poly(dimethylsiloxane), vinyl terminated

average M_w ~25,000, viscosity 850-1,150 cSt (25 °C)(lit.)

• Synonym(s): PDMS
• CAS Number: 68083-19-2
• MDL number: MFCD00197935
• UNSPSC Code: 12162002
• PubChem Substance ID: 24867115
• NACRES: NA.23

Properties

• form: liquid
• mol wt: average M_w ~25,000; average M_w ~25,000
• refractive index: n20/D 1.4052
• viscosity: 850-1,150 cSt(25 °C)(lit.)
• bp: >93 °C (lit.)
• iodine value: 2.2‑3.5
• density: 0.965 g/mL at 25 °C (lit.)
• SMILES string: C[Si](C)=O
• InChI: 1S/C8H18OSi2/c1-7-10(3,4)9-11(5,6)8-2/h7-8H,1-2H2,3-6H3
• InChI key: BITPLIXHRASDQB-UHFFFAOYSA-N

Description

Application

Mold-making elastomers and encapsulants and sealants for electronic components.

Features and Benefits

Polymerized product provides non-corrosive shield against moisture, dirt and contaminants for electrical components. Polymer may be heat or room temperature cured. Polymerization produces no volatile gases.

Physical form

Divinyl functional reactive silicone fluid.

Safety Information

• Storage Class Code: 10 - Combustible liquids
• WGK: WGK 3
• Flash Point(F): Not applicable
• Flash Point(C): Not applicable
• Personal Protective Equipment: dust mask type N95 (US), Eyeshields, Gloves