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dimethyl

dimethyl

dimethyl Sentence Examples

  • Pyrogallol dimethyl ether is found in beechwood tar.

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  • aniline, C 6 H 5 NH 2, monomethyl aniline, C 6 H 5 NH CH 3, and dimethyl aniline, C 6 H 5 N(CH 3) 2, are in increasing order of basicity.

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  • Noetling (Ber., 1885, 18, p. 2657), who investigated the nitro-, amino-, and oxy-xylenes in their relations to the three xylenes or dimethyl benzenes.

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  • Bamberger opposed Claus' formula on the following grounds: - The molecule of naphthalene is symmetrical, since 2.7 dioxynaphthalene is readily esterified by methyl iodide and sulphuric acid to a dimethyl ether; and no more than two mono-substitution derivatives are known.

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  • Reduction of this ester leads to the formation of ammonia, hydroxylamine, and dimethyl pyrrol dicarboxylic ester, C(CH3): C C02R HN< C(CO 2 R) :C CH3.

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  • It will be advantageous if the spectra of ammonia, benzene, aniline and dimethyl aniline be compared, when the re-' markable coincidences will at once become apparent, as also the different weighting of the molecule.

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  • For dimethyl ketone or acetone, see Acetone.

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  • The first compound, containing a group COH, or more explicitly 0 = CH, is an aldehyde, having a pronounced reducing power, producing silver from the oxide, and is therefore called propylaldehyde; the second compound containing the group - C CO C - behaves differently but just as characteristically, and is a ketone, it is therefore denominated propylketone (also acetone or dimethyl ketone).

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  • Dimethyl sulphate, (CH3)2S04, is a colourless liquid which boils at 187 °-188° C., with partial decomposition.

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  • Great care should be taken in using dimethyl and diethyl sulphates, as the respiratory organs are affected by the vapours, leading to severe attacks of pneumonia.

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  • Hydrochloric acid at 200° C. decomposes into oxalic acid, carbon dioxide and methylamine, whilst an alcoholic solution of a caustic alkali gives dimethyl urea and oxalic acid.

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  • It is prepared by the action of carbonyl chloride on dimethyl aniline in the presence of aluminium chloride: COC12+2C6H5N(CH3)2=2HC1+CO[C6H4N(CH3)2]2.

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  • ACETONE, or DIMETHYL KETONE', CH3.CO.CH3, in chemistry, the simplest representative of the aliphatic ketones.

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  • The dimethyl ether or veratrol is also used in medicine.

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  • XYLENE, or Dimethyl Benzene, C6H4(CH3)2.

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  • It combines directly with methyl iodide to form dimethyl coninium iodide, C10H22NI, which by the destructive methylation process of A.

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  • A dimethyl ether of inactive inosite is dambonite which occurs in caoutchouc from Gabon.

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  • Many organic arsenic compounds are known, analogous to those of nitrogen and phosphorus, but apparently the primary and secondary arsines, AsH2CH3 and AsH(CH3)2, do not exist, although the corresponding chlorine derivatives, AsCl2CH3, methyl arsine chloride, and AsCl(CH3)2, dimethyl arsine chloride, are known.

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  • The dimethyl arsine (or cacodyl) compounds have been most studied.

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  • Monomethyl and dimethyl aniline are colourless liquids prepared by heating aniline, aniline hydrochloride and methyl alcohol in an autoclave at 220°.

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  • Monomethyl aniline boils at 193-195'; dimethyl aniline at 192°.

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  • dimethyl sulfoxide: a perspective of its use in rheumatic diseases.

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  • dimethyl sulphoxide ).

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  • dimethyl sulfide, a gas known to be important in cloud formation.

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  • dimethyl sulfide, or DMS.

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  • dimethyl ether " as " wood ether " .

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  • dimethyl terephthalate.

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  • For example, the JPO service translates " dimethyl ether " as " wood ether " .

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  • Another chemical commonly used is DMP (dimethyl phthalate ).

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  • The growing patch of phytoplankton also produced significant quantities of dimethyl sulfide, a gas known to be important in cloud formation.

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  • dimethyl sulfoxide: a perspective of its use in rheumatic diseases.

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  • Pyrogallol dimethyl ether is found in beechwood tar.

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  • OH NH 2 (1.3),and dimethyl meta-aminophenol,C 6 H 4.

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  • aniline, C 6 H 5 NH 2, monomethyl aniline, C 6 H 5 NH CH 3, and dimethyl aniline, C 6 H 5 N(CH 3) 2, are in increasing order of basicity.

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  • Noetling (Ber., 1885, 18, p. 2657), who investigated the nitro-, amino-, and oxy-xylenes in their relations to the three xylenes or dimethyl benzenes.

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  • Bamberger opposed Claus' formula on the following grounds: - The molecule of naphthalene is symmetrical, since 2.7 dioxynaphthalene is readily esterified by methyl iodide and sulphuric acid to a dimethyl ether; and no more than two mono-substitution derivatives are known.

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  • Reduction of this ester leads to the formation of ammonia, hydroxylamine, and dimethyl pyrrol dicarboxylic ester, C(CH3): C C02R HN< C(CO 2 R) :C CH3.

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  • Hantzsch, Ann., 1896, 2 9 2, p. 3 1 7); by the action of hydroxylamine sulphate on alkaline nitrites in the presence of lime or calcium carbonate, the mixture being rapidly heated to 60° C.; or by the hydrolysis of dimethyl nitroso-oxyurea, (CH 3) 2 N CO N(NO) OH (A.

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  • It will be advantageous if the spectra of ammonia, benzene, aniline and dimethyl aniline be compared, when the re-' markable coincidences will at once become apparent, as also the different weighting of the molecule.

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  • For dimethyl ketone or acetone, see Acetone.

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  • The first compound, containing a group COH, or more explicitly 0 = CH, is an aldehyde, having a pronounced reducing power, producing silver from the oxide, and is therefore called propylaldehyde; the second compound containing the group - C CO C - behaves differently but just as characteristically, and is a ketone, it is therefore denominated propylketone (also acetone or dimethyl ketone).

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  • Dimethyl sulphate, (CH3)2S04, is a colourless liquid which boils at 187 °-188° C., with partial decomposition.

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  • Great care should be taken in using dimethyl and diethyl sulphates, as the respiratory organs are affected by the vapours, leading to severe attacks of pneumonia.

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  • Hydrochloric acid at 200° C. decomposes into oxalic acid, carbon dioxide and methylamine, whilst an alcoholic solution of a caustic alkali gives dimethyl urea and oxalic acid.

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  • It is prepared by the action of carbonyl chloride on dimethyl aniline in the presence of aluminium chloride: COC12+2C6H5N(CH3)2=2HC1+CO[C6H4N(CH3)2]2.

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  • ACETONE, or DIMETHYL KETONE', CH3.CO.CH3, in chemistry, the simplest representative of the aliphatic ketones.

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  • The dimethyl ether or veratrol is also used in medicine.

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  • XYLENE, or Dimethyl Benzene, C6H4(CH3)2.

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  • It combines directly with methyl iodide to form dimethyl coninium iodide, C10H22NI, which by the destructive methylation process of A.

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  • A dimethyl ether of inactive inosite is dambonite which occurs in caoutchouc from Gabon.

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  • Many organic arsenic compounds are known, analogous to those of nitrogen and phosphorus, but apparently the primary and secondary arsines, AsH2CH3 and AsH(CH3)2, do not exist, although the corresponding chlorine derivatives, AsCl2CH3, methyl arsine chloride, and AsCl(CH3)2, dimethyl arsine chloride, are known.

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  • The dimethyl arsine (or cacodyl) compounds have been most studied.

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  • Monomethyl and dimethyl aniline are colourless liquids prepared by heating aniline, aniline hydrochloride and methyl alcohol in an autoclave at 220°.

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  • Monomethyl aniline boils at 193-195'; dimethyl aniline at 192°.

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  • Many people are allergic to natural latex, ammonia, dimethyl thiuram disulfide, or zinc oxide, which are some of the components of liquid latex.

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  • Para-amino benzoic acid (PABA) compounds, including PABA, padimate O (octyl dimethyl PABA), and glyceryl PABA, are effective only against UVB light.

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