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polar solvent |
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polar solvent [′pō·lər ′säl·vənt] (materials) A solvent in whose molecules there is either a permanent separation of positive and negative charges, or the centers of positive and negative charges do not coincide; these solvents have high dielectric constants, are chemically active, and form coordinate covalent bonds; examples are alcohols and ketones. How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content. |
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In industrial processes, water, a polar solvent, is often incapable of dissolving a large number of substances, and therefore organic liquids are used. To illustrate, precipitated silica dust readily disperses in water, a polar solvent, because the water easily wets the surface of each particle. 2,252,038 covers the use of a pharmacologically active compound selected from the group consisting of non-steroidal anti-inflammatories, anti-histamines, steroid hormones, benzodiazepines and anti-depressants for the preparation of a buccal aerosol pump spray composition that would be absorbed through the oral mucosa in a polar solvent. |
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