abietic acid वाक्य
उदाहरण वाक्य
मोबाइल
- Rosin exposure in particular may lead to abietic acid dermatitis.
- It can be prepared by dehydration of abietic acid, which it usually accompanies in mixtures like rosin.
- It is not acid free particularly containing abietic acid and comes in many size rolls up to wide.
- Succinic acid may not be an original component of amber, but rather a degradation product of abietic acid.
- Kraft soap can be reneutralized with sulfuric acid to restore the acidic forms abietic acid, palmitic acid, and related resin acid components.
- Pimaric acid closely resembles abietic acid into which it passes when distilled in a vacuum; it has been supposed to consist of three isomers.
- It is the main irritant and contact allergen present in thuja wood . ( " Cf . " pine, where the primary irritant is abietic acid .)
- Abietic acid can also be extracted from rosin by means of hot alcohol; it crystallizes in leaflets, and on oxidation yields trimellitic acid, isophthalic acid and terebic acid.
- At high temperatures, copper oxide reacts with hydrogen chloride to water-soluble and mechanically weak copper chloride, and with rosin to salts of copper and abietic acid which is soluble in molten rosin.
- Examples of resin acids are abietic acid ( sylvic acid ), C 20 H 30 O 2, plicatic acid contained in cedar, and pimaric acid, C 20 H 30 O 2, a constituent of galipot resin.
- "' Abietane "'is a diterpene that forms the structural basis for a variety of natural chemical compounds such as abietic acid, carnosic acid, and ferruginol which are collectively known as abietanes or abietane diterpenes.
- Normally crude tall oil contains rosins ( which contains resin acids ( mainly abietic acid and its isomers ), fatty acids ( mainly palmitic acid, oleic acid and linoleic acid ) and fatty alcohols ), unsaponifiable sterols ( 5-10 % ), some sterols, and other alkyl hydrocarbon derivates.
- A mixture of organic acids ( resin acids, predominantly abietic acid, with pimaric acid, isopimaric acid, neoabietic acid, dihydroabietic acid, and dehydroabietic acid ), rosin is a glassy solid, virtually nonreactive and noncorrosive at normal temperature, but liquid, ionic and mildly reactive to metal oxides at molten state.
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