The Year-book for Colorists and Dyers: Presenting a Review of the Year's Advances in the Bleaching, Dyeing, Printing and Finishing of Textiles, Volume 81906 - Dyes and dyeing |
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Page 23
... reducing liquid . Let a equal the Beaumé required . Let z equal the volume of the reducing liquid . av - vB z = b - a SULPHURIC ACID . The Manufacturing Chemists ' Association have adopted the following figures as representing the per ...
... reducing liquid . Let a equal the Beaumé required . Let z equal the volume of the reducing liquid . av - vB z = b - a SULPHURIC ACID . The Manufacturing Chemists ' Association have adopted the following figures as representing the per ...
Page 49
... reducing the dye- stuff with zinc dust , and reoxidation by air and chromic acid . Whilst nitro , nitroso , and azo compounds were completely destroyed on reduction , those dyestuffs which may be regarded as having an ortho quinonoid ...
... reducing the dye- stuff with zinc dust , and reoxidation by air and chromic acid . Whilst nitro , nitroso , and azo compounds were completely destroyed on reduction , those dyestuffs which may be regarded as having an ortho quinonoid ...
Page 50
... reduction and oxidation : Decolorized by Hydrosulphite . Color restored on Color not restored by air , but on oxidation exposure to air . with persulphate . Color not restored either by air or persulphate . Not altered by hydro ...
... reduction and oxidation : Decolorized by Hydrosulphite . Color restored on Color not restored by air , but on oxidation exposure to air . with persulphate . Color not restored either by air or persulphate . Not altered by hydro ...
Page 52
... reduction is more sluggish ( e.g. , azo yellows ) , it has been found necessary to employ a slightly acid solution . This is termed HYDROSULPHITE B. Prepared by acidifying 200 c.c. of hydrosulphite A with 1 c.c. of glacial acetic acid ...
... reduction is more sluggish ( e.g. , azo yellows ) , it has been found necessary to employ a slightly acid solution . This is termed HYDROSULPHITE B. Prepared by acidifying 200 c.c. of hydrosulphite A with 1 c.c. of glacial acetic acid ...
Page 53
... reduction tests , the sample is boiled for from one - quarter to one minute with the hydrosulphite , then rinsed well under the tap , and allowed to lie on white paper for an hour or so . With most dyestuffs which form air - oxidizable ...
... reduction tests , the sample is boiled for from one - quarter to one minute with the hydrosulphite , then rinsed well under the tap , and allowed to lie on white paper for an hour or so . With most dyestuffs which form air - oxidizable ...
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Common terms and phrases
acetic acid Acid Green Agent or Maker Agent or Name Alizarine Black alkali ammonia Anilin Anthracene apparatus assignor AZO DYE bath Brilliant Brown carbonate caustic CD Benzo CD Direct cent chlorid Chrome color coloring-matters conc cotton CT Mz Cyanine dated Decolorized DISCHARGE dissolved Dye Method dyestuff Elberfeld Eosine exposure to air extra fabric Fast Blue fibre gallons Germany heated hydrochloric acid Indigo invention relates Klp CD Klp WGS material Math CD Diamine Math WGS Methyl Violet Methylene Methylene Blue mixture mordant Mz CD Dianil Mz Lakes Mz WCh Alizarine Mz WGS Name of Dye Naphthol obtained Orange Orange G oxazine oxidizing persulphate PK CD PK WGS Ponceau powder return on exposure Safranine salts Scarlet shades soap soluble solution Specific Gravity SS WGS sulphonic sulphuric acid Tannin temperature thiazine Thickening Thiogene triphenylmethane washing WCh Alizarine Blue WGS Azo WGS Fast wool Yellow G