Definitions
from The Century Dictionary.
- noun A chemical base (C10H7NH2) obtained from nitronaphthalene by reducing it with iron-filings and acetic acid.
from the GNU version of the Collaborative International Dictionary of English.
- noun (Chem.) One of two basic amido derivatives of naphthalene, C10H7.NH2, forming crystalline solids.
from Wiktionary, Creative Commons Attribution/Share-Alike License.
- noun organic chemistry Either of two
isomeric primary amines derived fromnaphthalene ; they occur incrude oil , and are used in the preparation ofdyes and other compounds
Etymologies
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Examples
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They can be diazotised at the ordinary temperature, and their diazo compounds are much stabler than those, for example, of alpha-and beta-naphthylamine or of aniline, which must always be used as quickly as possible.
The Dyeing of Cotton Fabrics A Practical Handbook for the Dyer and Student Franklin Beech
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The developing bath is made from 1-3/4 lb. beta-naphthylamine dissolved with the aid of 10 pints boiling water and 1 pint hydrochloric acid.
The Dyeing of Cotton Fabrics A Practical Handbook for the Dyer and Student Franklin Beech
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The best way of proceeding is the following: Heat 1-3/4 lb. of alpha-naphthylamine in 10 pints of boiling water, agitating well until the base is very finely divided in the water, then 1-1/4 pints of hydrochloric acid is added, and the heat and stirring continued until the base is dissolved, then the mass is allowed to cool, 27 lb. of ice is added and 1-1/2 pints of hydrochloric acid.
The Dyeing of Cotton Fabrics A Practical Handbook for the Dyer and Student Franklin Beech
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Glauber's salt, then diazotise and develop with naphthylamine ether.
The Dyeing of Cotton Fabrics A Practical Handbook for the Dyer and Student Franklin Beech
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The developing bath is a little more difficult to make, owing to the fact that it is more difficult to get the alpha-naphthylamine into solution.
The Dyeing of Cotton Fabrics A Practical Handbook for the Dyer and Student Franklin Beech
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These amido compounds, of which aniline, toluidine, benzidine, naphthylamine are familiar examples, are characterised by containing the molecular group NH {2}, which radicle is built up of the two elements nitrogen and hydrogen.
The Dyeing of Cotton Fabrics A Practical Handbook for the Dyer and Student Franklin Beech
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It is prepared for use by dissolving in hydrochloric acid, 10 lb. naphthylamine ether powder heated with 5 lb.
The Dyeing of Cotton Fabrics A Practical Handbook for the Dyer and Student Franklin Beech
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Of the "acid blacks and violets," a few colors are of medium fastness, both on wool and silk, e.g., naphthol black, naphthylamine, black, resorcinol brown, fast brown, etc.
Scientific American Supplement, No. 810, July 11, 1891 Various
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Alpha-naphthylamine, Bluish claret red; Reddish puce.
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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