|
|
| | Polydimethylsiloxane, dihydroxy terminated Basic information |
| | Polydimethylsiloxane, dihydroxy terminated Chemical Properties |
| Melting point | <-60°C | | Boiling point | 182 °C | | density | 0.98 g/mL at 25 °C | | refractive index | n20/D 1.406 | | Fp | 155 °F | | storage temp. | 2-8°C | | form | Liquid | | Specific Gravity | 0.97 | | Appearance | Colorless to light yellow Liquid | | Water Solubility | Soluble in carbon tetrachloride, benzene, chloroform, diethyl ether, toluene and other organic solvents. Insoluble in water and ethanol. | | Cosmetics Ingredients Functions | MOISTURISING
SKIN CONDITIONING - EMOLLIENT
ANTIFOAMING | | InChI | InChI=1S/HOSi/c1-2/h1H | | InChIKey | XQSFXFQDJCDXDT-UHFFFAOYSA-N | | SMILES | [Si]O[H] | | EPA Substance Registry System | Hydroxy-terminated dimethyl siloxanes and silicones (70131-67-8) |
| | Polydimethylsiloxane, dihydroxy terminated Usage And Synthesis |
| Description | Polydimethylsiloxane, dihydroxy terminated is a non-toxic, optically transparent, inert, flammable silicone-based organic polymer. It is widely used in heat-resistant lubricants, flame retardants, medical devices, and cosmetics. Polydimethylsiloxane is hydrophobic, cytocompatible and viscoelastic and can be used for water-repellent coatings in the textile industry. | | Chemical Properties | Silanol Terminated Polydimethylsiloxane is a silicon-basedorganic polymer that is nontoxic, optically clear, inert, and inflammablematerial. It is widely used in heat-resistant lubricants, fire retardants,medical devices, and cosmetics. Polydimethylsiloxane is hydrophobic,cytocompatible, and viscoelastic which can be used to prepare water-repellentcoatings in the textile industry. | | Uses | Polydimethylsiloxane is frequently used in a liquid containing 4-5% silica gel, emulsifiers and preservatives. It is employed in applications like contact lenses, medical devices, elastomers, in shampoos, food (antifoaming agent), caulking, lubricants, kinetic sand , and heat-resistant tiles. PDMS is a common surfactant, component of defoamers and as an herbicidal penetran. | | Solubility in organics | THF, toluene, Insoluble in water | | Toxics Screening Level | The initial threshold screening level (ITSL) for hydroxyl-terminated dimethyl siloxanes and siliconesremains at 0.1 μg/m3 based on an annual averaging time. |
| | Polydimethylsiloxane, dihydroxy terminated Preparation Products And Raw materials |
|