Definitions
from The American Heritage® Dictionary of the English Language, 5th Edition.
- noun Any of three isomeric divalent organic groups, C6H4, derived from benzene by removal of two hydrogen atoms.
from The Century Dictionary.
- noun A bivalent organic radical derived from benzene by the removal of two hydrogen atoms. Its formula is C6H4=.
from the GNU version of the Collaborative International Dictionary of English.
- noun (Chem.) A hypothetic radical (C6H4) occurring in certain derivatives of benzene.
from Wiktionary, Creative Commons Attribution/Share-Alike License.
- noun chemistry Any of three
isomeric divalent aromatic radicals derived frombenzene by removing twohydrogen atoms from theortho- ,meta- orpara- positions.
Etymologies
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Examples
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The bowls are really neat, as is his "phenolygous cubic graphite" and the phenylene macrocycles. neat stuff.
Chemistry & Cooking Taitauwai 2007
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B, 1 lb. cotton brown N, 1 lb. soda and 10 lb. Glauber's salt, then diazotise and develop with phenylene diamine.
The Dyeing of Cotton Fabrics A Practical Handbook for the Dyer and Student Franklin Beech
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Sometimes two developers are mixed together, in which case care should be taken that an alkaline developer naphthol or phenol be not mixed with an acid developer (phenylene diamine, naphthylamine, etc.), unless the acidity of the latter has been neutralised with soda; otherwise the developer might be thrown out of the bath in an insoluble and hence useless form.
The Dyeing of Cotton Fabrics A Practical Handbook for the Dyer and Student Franklin Beech
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= Toluylene diamine = is a homologue of phenylene diamine and is used in precisely the same way.
The Dyeing of Cotton Fabrics A Practical Handbook for the Dyer and Student Franklin Beech
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They may even be diazotised and developed with beta-naphthol and phenylene diamine.
The Dyeing of Cotton Fabrics A Practical Handbook for the Dyer and Student Franklin Beech
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C_6H_5·N_2·C_6H_3 (NH_2) _2, first prepared by O. Witt (_Ber. _, 1877, 10, p. 656), is obtained by coupling phenyl diazonium chloride with meta-phenylene diamine.
Encyclopaedia Britannica, 11th Edition, Volume 3, Part 1, Slice 1 "Austria, Lower" to "Bacon" Various
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Its constitution is determined by the facts that it may be prepared by reducing nitro-azo-benzene by ammonium sulphide and that by reduction with stannous chloride it yields aniline and meta-phenylene diamine.
Encyclopaedia Britannica, 11th Edition, Volume 3, Part 1, Slice 1 "Austria, Lower" to "Bacon" Various
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Cotton brown N, 1 lb. diamine fast yellow A, 1 lb. soda and 10 lb. salt, then diazotise and develop with phenylene diamine.
The Dyeing of Cotton Fabrics A Practical Handbook for the Dyer and Student Franklin Beech
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NH_2·C_6H_4·N_2·C_6H_3 (NH_2) _2, is prepared by the action of nitrous acid on meta-phenylene diamine.
Encyclopaedia Britannica, 11th Edition, Volume 3, Part 1, Slice 1 "Austria, Lower" to "Bacon" Various
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After dyeing rinse well in a bath containing 6 dr. soda and 3 oz. soap per 10 gallons water, diazotised in a fresh bath with 4 lb. nitrite of soda and 12 lb. hydrochloric acid (per 100 lb. of dry goods), rinse thoroughly and develop with 3 to 16 oz. phenylene diamine (93 per cent.), with addition of 1 to 2 lb. soda.
The Dyeing of Cotton Fabrics A Practical Handbook for the Dyer and Student Franklin Beech
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