18678-58-5 - Names and Identifiers
| Name | 1,17-Dihydroxy octadecamethyl nonasiloxane
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| Synonyms | 1,17-Dihydroxy octadecamethyl nonasiloxane
1,17-Nonasiloxanediol, 1,1,3,3,5,5,7,7,9,9,11,11,13,13,15,15,17,17-octadecamethyl-
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| CAS | 18678-58-5
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18678-58-5 - Physico-chemical Properties
18678-58-5 - Upstream Downstream Industry
18678-58-5 - Introduction
1,17-dihydroxy octadecamethyl nonasilane, the chemical formula is C26H58O2Si9, is an organic silicon compound, commonly known as PDMS or polysiloxane. The following is a detailed description of its nature, use, preparation and safety information:
Nature:
-Appearance: colorless to yellowish transparent liquid.
-Melting point:-45 ℃.
-Boiling point: About 300 ℃.
-Density: about 0.96g/cm³.
-Solubility: Soluble in organic solvents such as alcohols, ethers, chlorinated hydrocarbons, etc., insoluble in water.
Use:
-Polysiloxane has many special properties and is widely used in chemistry, medicine, beauty, lubricants and other fields.
-Used as a lubricant in chemical experiments to increase the fluidity of substances and reduce surface tension.
-in the field of medical equipment, pharmaceutical preparations, biological engineering, commonly used in the preparation of synthetic materials, lubricants, fluid transport media.
-In the field of beauty and skin care, PDMS is often used as an ingredient in skin care products and cosmetics to increase the smoothness and softness of the product.
Method:
-A common method for preparing PDMS is to react dichlorosilane with anhydrous methanol through sodium hydroxide catalyst to obtain alcohol derivatives, and then obtain the target product through Silylation reaction.
Safety Information:
- PDMS is generally considered to be a relatively safe chemical compound, non-toxic, non-carcinogenic, non-irritating.
-It is not excluded that a small number of people are allergic to this compound or have an allergic reaction to it.
-When using PDMS, pay attention to avoid prolonged contact and avoid inhaling its vapor or solution.
-try to avoid PDMS contact with eyes, skin or respiratory tract, if necessary, use personal protective equipment, such as gloves, goggles and protective clothing.
-In case of accidental exposure or accidental ingestion, rinse immediately with clean water and seek medical help promptly.
Last Update：2024-04-09 15:18:02