manufacturers 9006-65-9 Dimethicone buy

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manufacturers 9006-65-9 Dimethicone buy

Dimethyl silicone oil is also known as methyl silicone oil, polymethyl siloxane liquid. Colorless transparent viscous liquid. tasteless. It doesn't smell. innocuity. The molecular formula is CH3 (Si (cH3)2)2)nSi (CH3)3. Average molecular weight 5000 to 100000. Depending on the molecular weight, the viscosity of motion varies from 1.0× 10-6 to 100,000 × 10-6 m2/s. Long-term use of temperature range -50 to 180 degrees C, in isolated air conditions or inert gases can be used for a long time at 200 degrees C. Viscosity coefficient 0.31 to 0.61. Surface tension 1.59 to 2.15 × 10-4N/cm. Dielectric constant (23 degrees C, 100Hz) 2.18 to 2.17. Volume resistivity (23 degrees C) 1.0×1014 to 1.0×1016 ocm3. The media loss angle tangent value (23 degrees C, 100Hz)0.00002 to 0.00004. Breakdown voltage strength 13.7 to 17.7kV/mm. Soluble in benzene, toluene, xylene, ether, partially soluble in ethanol, butanol, acetone, insoluble in cycloheol, methanol, paraffin oil, vegetable oil. It has excellent moisture repellency, good light transmission and chemical stability. Widely used in insulation, heat, moisture fillers, high-efficiency defoamers, release agents, lubricants and surface treatment agents. It was produced by reaction between octmethyl tetrasiloxane and hexamyl disiloxane under the action of a catalyst of concentrated sulfuric acid or ammonium tetramethyl hydroxide.