The Base (part A) contains the followings:

1. Dimethyl siloxane, dimethylivinyl terminated - 68083-19-2
2. Dimethylvinylated and trimethylated silica - 68988-89-6
3. Tetra (trimethoxysiloxy) silane - 3555-47-3
4. Ethyl benzene - 100-41-4

VOC content: 8 grams/liter

The Curing Agent (part B) contains the followings:

1. Dimethyl, methylhydrogen siloxane - 68037-59-2
2. Dimethyl siloxane, dimethylvinyl terminated - 68083-19-2
3. Dimethylvinylated and trimethylated silica - 68988-89-6
4. Tetramethyl tetravinyl cyclotetra siloxane - 2554-06-5
5. Ethyl benzene - 100-41-4

Maximum VOC content including water: 85 grams/liter

Spin Casting of Sylgard 184

Sylgard 184 can also be spin cast to produce PDMS. Although it has not been studied extensively, a couple of papers describe the spin casting of Sylgard 184. Normally, the base (part A) and the curing agent (part B) are mixed in 10:1 mass ratio as recommended by the manufacturer, and then dissolved in a n-alkane like n-hexane or n-heptane before spin casting.

Color: Clear
Dielectric Constant at 100 Hz: 2.72
Dielectric Constant at 100 kHz: 2.68
Dielectric Strength: 500 volts per mil v/mil
Dissipation Factor at 100 Hz: 0.00257
Dissipation Factor at 100 kHz: < 0.00133
Durometer - Shore A: 43 Shore A
Dynamic Viscosity: 3500 Centipoise
Heat Cure: 10 Minutes @ 150 Deg C
Heat Cure: 20 Minutes @ 125 Deg C
Heat Cure: 35 Minutes @ 100 Deg C
Mix Ratio: 10:1 Base to Catalyst 87-RC
Room Temperature Cure - Hours: 48 Hours
Shelf Life: 720 Days
Specific Gravity @ 25C: 1.03
Temperature Range: -45 Deg C to 200 Deg C
Thermal Conductivity: 0.27 Watts per meter K
UL 94 V-0 @ 8.4 mm thickness
UL 94 V-1 @ 6.0 mm thickness
Volume Resistivity: 2.9e+014 ohm-centimeters
Working Time: > 90 Minutes