The Year-book for Colorists and Dyers, Volume 81906 - Dyes and dyeing |
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Page 48
... absolute essential for any scheme of analysis that it should also be capable of extension to all the mixtures which may be encountered in practice . For this reason , only such chemical properties can be employed as group reactions ...
... absolute essential for any scheme of analysis that it should also be capable of extension to all the mixtures which may be encountered in practice . For this reason , only such chemical properties can be employed as group reactions ...
Page 49
In the second place , in order to ascertain the chemical relationship of the dyestuff , a modification of the method suggested by the author in 1893 for the analysis of dyestuffs in substance has been employed , which depends upon the ...
In the second place , in order to ascertain the chemical relationship of the dyestuff , a modification of the method suggested by the author in 1893 for the analysis of dyestuffs in substance has been employed , which depends upon the ...
Page 50
For distinguishing between these the behavior with concentrated sulphuric acid or strong hydrochloric acid can be frequently employed . In the appended tables the sub - division of the groups has been usually omitted as unnecessary ...
For distinguishing between these the behavior with concentrated sulphuric acid or strong hydrochloric acid can be frequently employed . In the appended tables the sub - division of the groups has been usually omitted as unnecessary ...
Page 51
The following reagents are employed . It is important that they be used of the strength indicated : DILUTE AMMONIA ( 1 : 100 ) . 1 c.c. conc . ammonia . 100 c.c. water ( soft or distilled ) . AQUEOUS ALCOHOLIC AMMONIA .
The following reagents are employed . It is important that they be used of the strength indicated : DILUTE AMMONIA ( 1 : 100 ) . 1 c.c. conc . ammonia . 100 c.c. water ( soft or distilled ) . AQUEOUS ALCOHOLIC AMMONIA .
Page 52
This solution , which is slightly alkaline , is employed in most In a few other cases , however , in which the reduction is more sluggish ( e.g. , azo yellows ) , it has been found necessary to employ a slightly acid solution .
This solution , which is slightly alkaline , is employed in most In a few other cases , however , in which the reduction is more sluggish ( e.g. , azo yellows ) , it has been found necessary to employ a slightly acid solution .
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Common terms and phrases
acetic acid action added addition Agent or Name Alizarine alkali ammonia Anilin Anthracene apparatus assignor bath Black Blue body Boil Brilliant Brown carbonate CD CD CD cent chlorid Chrome color coloring-matters combination compounds conc consists containing cotton crystals Cyanine Dark dated Diamine Direct DISCHARGE dissolved Dye Method dyed dyestuff employed extra fabric Fast fibre Germany Green heated hydrosulphite Indigo invention relates Lakes machine Maker manufacture material Math WGS means Methyl mixed mixture mordant Mz WGS Name of Dye obtained Orange oxidizing paste Patent PK WGS pounds powder preferably prepared present printing quantity reaction reducing salts Scarlet shades soap soda sodium soluble solution Specific Gravity steam suitable Sulphur sulphuric acid temperature Thiogene treated Violet washing WCh WCh WGS WGS WGSCh wool Yellow yield York