Poly(dimethylsiloxane)
Chemical Inertness and Stability: PDMS is chemically stable and physiologically inert, making it suitable for medical and industrial uses where minimal reactivity with other substances is essential.
Broad Operating Temperature Range: It performs reliably across an extensive temperature spectrum, from –50°C to 180°C, ensuring functionality in both extreme cold and high-heat conditions.
Exceptional Water Repellency: PDMS exhibits strong hydrophobic characteristics, ideal for applications requiring protection against moisture and water exposure.
Electrical Insulation and Mechanical Durability: Due to its excellent dielectric properties and high shear stability, PDMS is widely used in electronic encapsulation, fluidic devices, and other applications demanding electrical and mechanical reliability.
Polydimethylsiloxane (PDMS) can present in various physical forms—such as a colorless transparent volatile liquid, a highly viscous fluid, or a semi-solid gel—depending on its molecular weight. It displays high physiological inertness, chemical stability, excellent electrical insulating properties, and strong resistance to environmental influences.
PDMS features a wide viscosity range, low freezing point, high flash point, notable hydrophobicity, and significant shear stability. It remains functional across a broad temperature range from –50 °C to 180 °C. Furthermore, its high permeability makes it well-suited as a carrier or matrix material in biochemical and biosensing applications.
Parameters
Melting point | -35°C |
Boiling point | 155-220°C |
density | 0.971 |
vapor pressure | 5 mm Hg ( 20 °C) |
refractive index | 1.4035 |
Fp | 63°C |
storage temp. | Refrigerator |
solubility | Chloroform (Slightly), Methanol (Slightly) |
form | Viscous Liquid |
Specific Gravity | 0.918 |
color | Colorless |
Water Solubility | INSOLUBLE |
Stability: | Stable. Flammable or combustible. Flammability depends upon extent of polymerization. Incompatible with strong oxidizing agents. |
Surface tension | 19mN/m at 20°C |
EPA Substance Registry System | Poly[oxy(dimethylsilylene)] (9016-00-6) |
Safety Information
Risk Statements | 36/37/38 |
Safety Statements | 24/25 |
RIDADR | 1993 |
WGK Germany | 2 |
RTECS | TQ2690000 |
TSCA | Yes |
HazardClass | 3 |
HS Code | 39100000 |
