Kinks On Wool Carding And Spinning
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58 KINKS ON WOOL Qualitative Tests for Fibers Can you give me a few qualitative tests for textile fibers? Walton (974).
The following is a list of tests that was pub- lished in the Textile World Record some time ago: 1. Microscopic Appearance.
2. Cotton burns without smell, while wool and silk shrivel up and give off the odor of burning animal matter.
3. A boiling solution of caustic alkali dis- solves silk and wool, but has little action on cotton.
4. Concentrated sulphuric acid dissolves cott...on and silk in the cold, while wool is little affected.
5. Schweitzer's reagent (ammoniacal solu- tion of oxide of copper) dissolves cotton and silk, but not wool. Cellulose is reprecipitated by gum, sugar, or acids, but the silk substance by acids alone.
6. A solution of basic chloride of zinc dis- solves silk, but not cotton or wool.
7. A solution of cotton in concentrated sul- phuric acid gives a purple coloration with an alcoholic solution of alpha-naphthol. This reaction really indicates the presence of sugar, and is therefore not given by silk or wool.
What to read after Kinks On Wool Carding And Spinning?
You can find similar books in the "Read Also" column, or choose other free books by Hutton, Clarence, B. 1881. Comp to read onlineMoreLess
To quickly assess the difficulty of the text, read a short excerpt:
58 KINKS ON WOOL Qualitative Tests for Fibers Can you give me a few qualitative tests for textile fibers? Walton (974).
The following is a list of tests that was pub- lished in the Textile World Record some time ago: 1. Microscopic Appearance.
2. Cotton burns without smell, while wool and silk shrivel up and give off the odor of burning animal matter.
3. A boiling solution of caustic alkali dis- solves silk and wool, but has little action on cotton.
4. Concentrated sulphuric acid dissolves cott...on and silk in the cold, while wool is little affected.
5. Schweitzer's reagent (ammoniacal solu- tion of oxide of copper) dissolves cotton and silk, but not wool. Cellulose is reprecipitated by gum, sugar, or acids, but the silk substance by acids alone.
6. A solution of basic chloride of zinc dis- solves silk, but not cotton or wool.
7. A solution of cotton in concentrated sul- phuric acid gives a purple coloration with an alcoholic solution of alpha-naphthol. This reaction really indicates the presence of sugar, and is therefore not given by silk or wool.
What to read after Kinks On Wool Carding And Spinning?
You can find similar books in the "Read Also" column, or choose other free books by Hutton, Clarence, B. 1881. Comp to read onlineMoreLess
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