Polydimethylsiloxane, dihydroxy terminated
- CAS NO.：70131-67-8
- Empirical Formula: HOSi
- Molecular Weight: 45.09284
- MDL number: MFCD00286442
- EINECS: 615-070-3
- SAFETY DATA SHEET (SDS)
- Update Date: 2026-01-13 11:19:46
What is Polydimethylsiloxane, dihydroxy terminated?
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.
The Uses of Polydimethylsiloxane, dihydroxy terminated
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.
Background
Silanol is an FDA-approved food contact substance that is commonly used in organosilicon chemistry and silicate mineralogy.
Metabolism
Not Available
Properties of Polydimethylsiloxane, dihydroxy terminated
| Melting point: | <-60°C |
| Boiling point: | 182 °C |
| Density | 0.98 g/mL at 25 °C |
| refractive index | n |
| Flash point: | 155 °F |
| storage temp. | 2-8°C |
| form | Liquid |
| Specific Gravity | 0.97 |
| Water Solubility | Soluble in carbon tetrachloride, benzene, chloroform, diethyl ether, toluene and other organic solvents. Insoluble in water and ethanol. |
| InChI | InChI=1S/HOSi/c1-2/h1H |
| EPA Substance Registry System | Hydroxy-terminated dimethyl siloxanes and silicones (70131-67-8) |
Safety information for Polydimethylsiloxane, dihydroxy terminated
Computed Descriptors for Polydimethylsiloxane, dihydroxy terminated
| InChIKey | XQSFXFQDJCDXDT-UHFFFAOYSA-N |
| SMILES | [Si]O[H] |
New Products
2-(2-aminoethyl) benzenesulfonamide Gemcitabine 3-benzoate impurity Dihydroxyphenylacetone Ornidazole EP impurity D Acetyl amino diol impurity Valsartan Benzyl Ester Impurity B N,N'-Dicyclohexylcarbodiimide 3-Bromo-2-Methyl-5-Nitropyridine 5-Bromo-3-Methyl-2-Pyridinecarboxylic acid 2-Amino-4-Methylpyridine 4-Aminopyridine 4-dimethylaminopyridineRelated products of tetrahydrofuran
You may like
-
Siloxanes and Silicones, di-Me, hydroxy-terminated 98%View Details -
Poly(dimethylsiloxane), hydroxy terminated viscosity ~10000-15000 cSt CAS 70131-67-8View Details
70131-67-8 -
Poly(dimethylsiloxane), hydroxy terminated average Mn ~550, viscosity ~25 cSt CAS 70131-67-8View Details
70131-67-8 -
Poly(dimethylsiloxane), hydroxy terminated viscosity ~750 cSt CAS 70131-67-8View Details
70131-67-8 -
Poly(dimethylsiloxane), hydroxy terminated viscosity ~65 cSt CAS 70131-67-8View Details
70131-67-8 -
Poly(dimethylsiloxane), hydroxy terminated average Mn ~110,000, viscosity ~50,000 cSt CAS 70131-67-8View Details
70131-67-8 -
Polydimethylsiloxane CAS 70131-67-8View Details
70131-67-8 -
Poly(dimethylsiloxane), hydroxy terminated CAS 70131-67-8View Details
70131-67-8