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Skip to content Polydimethylsilicone liquids are blend of polymers with linear and branched structure.
PDMS are clear transparent odorless liquids, that have good dielectric, damping, surface-active, water-repellent and anti-adhesive, defoaming properties, resistant to low and high temperatures, soluble in most organic solvents.
Synonyms: polymethylsiloxane, PMS, polydimethylsiloxane, PDMS, dimethicone, silicone fluid, dimethyl siloxane, dimethylpolysiloxane, silicone oil, dimethylpolysiloxane hydrolyzate
CAS. No: 63148-62-9 EC No: 613-156-5
The effect of high temperatures on the PDMS treated surfaces of products made of glass, ceramics, and fiber materials forms a durable water-repellent protective coating.
When used, it is allowed to mix similar viscosity liquids to obtain liquids with the required viscosity.
The guaranteed shelf life in original container is 60 months.
Storage over the date specified on the label does not necessarily mean the product is unusable. In case if store more please check the properties of product before use.
Polydimethylsilicone liquids are inert, explosion-proof, produces no poisonous action to skin and conjunctiva.
Detailed instructions are given in the relevant product safety data sheet. It can be provided upon request.
| Brand | Flash point, °С | Kinematic viscosity, cSt |
|---|---|---|
| PMS-5 | not lower than 116 | 4.5 – 5.6 |
| PMS-10 | not lower than 172 | 9.2 – 10.8 |
| PMS-20 | not less than 200 | 18 – 22 |
| PMS-40 | not less than 200 | 36 – 44 |
| PMS-50 | not lower than 220 | 45 – 55 |
| PMS-100 | not lower than 305 | 95 – 105 |
| PMS-200 | not lower than 316 | 192-208 |
| PMS-300 | not lower than 310 | 290 – 310 |
| PMS-400 | not lower than 315 | 385 – 415 |
| PMS-500 | not lower than 316 | 480 – 520 |
| PMS-1000 | not lower than 310 | 950 – 1050 |
| Name of the indicator, unit of measure | Norm | ||
| Kinematic viscosity, cSt: (depending on the brand of fluid) at 20°C | 4.5 – 1050 | ||
| Flash point in an open crucible, °С (depending on brand) | 116 – 316 | ||
| Pour point, °С (depending on brand) | minus 100 – minus 60 | ||
| Boiling point at a residual pressure of 0.13-0.5 kPa, ° С: | |||
| PMS 5, PMS 10 | 170 – 250 | ||
| PMS 10, PMS 20, PMS 40 | over 250 | ||
| PMS 50, PMS 100, PMS 200, PMS 300, PMS 400, PMS 500, PMS 1000 | over 300 | ||
| Silicon content, % (depending on brand) | 35.5 – 38.5 | ||
| Self-ignition temperature of liquids (depending on brand), °С | 330 – 400 | ||
| Temperature limits of ignition of vapors in air (depending on brand), °С, lower | 128 – 214 | ||
| Temperature limits of ignition of vapors in air (depending on the brand), °С, upper | 256-297 | ||
| Density, g/cm3 , at 20°С | 0.91 – 0.98 | ||
| Density, g/cm 3 , for liquids with a viscosity greater than 200 cSt, at minus 60°C | 1.03 – 1.04 | ||
| Solubility, %, in water, less | 0.2 | ||
| Solubility, %, in aromatic and chlorinated hydrocarbons | 100 | ||
| Solubility,%, in alcohol, acetone | complete for PMS 5-10 | ||
| Thermal conductivity coefficient at 20°C, W/m.K | 0.167 | ||
