The Analysis of Coal Tar Creosote And Cresylic Acid Sheep Dips
The Analysis of Coal Tar Creosote And Cresylic Acid Sheep Dips
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C. Water, 200 g. NaCl, then treated as in analysis K. 433 < 9. 776 8. 30 9. 81 1. 016 . 997 1. 004 J 30 ANALYSIS OF COAL-TAR SHEEP DIPS. It is evident, accordingly, that the method described will bring to measurement, with no loss, all the phenols present in the distillate from the dip. TESTS WITH COAL-TAR CREOSOTE DIPS OF KNOWN COMPOSITION. The next undertaking was to make up a coal-tar creosote dip of accurately known composition in order to test upon it the validity in practice of the methods of analysis developed. Dip No. 1. Rosin : A fair grade of ordinary commercial rosin was employed. Weight used, 220 grams. Hydrocarbons: Coal-tar oils, supposed to be free from phenols, shaken four times with 10 to 25 per cent caustic soda, dried over calcium chlorid, and filtered. Weight taken, 550 grams. Pure phenols: Obtained by the purification in the laboratory of crude cresylic acid. Weight taken, 120 grams. Caustic soda and water: One part pure NaOH dissolved in two parts water. By titration with N/2 H.
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You can find similar books in the "Read Also" column, or choose other free books by Robert M Robert Macfarlane Chapin to read online
To quickly assess the difficulty of the text, read a short excerpt:
C. Water, 200 g. NaCl, then treated as in analysis K. 433 < 9. 776 8. 30 9. 81 1. 016 . 997 1. 004 J 30 ANALYSIS OF COAL-TAR SHEEP DIPS. It is evident, accordingly, that the method described will bring to measurement, with no loss, all the phenols present in the distillate from the dip. TESTS WITH COAL-TAR CREOSOTE DIPS OF KNOWN COMPOSITION. The next undertaking was to make up a coal-tar creosote dip of accurately known composition in order to test upon it the validity in practice of the methods of analysis developed. Dip No. 1. Rosin : A fair grade of ordinary commercial rosin was employed. Weight used, 220 grams. Hydrocarbons: Coal-tar oils, supposed to be free from phenols, shaken four times with 10 to 25 per cent caustic soda, dried over calcium chlorid, and filtered. Weight taken, 550 grams. Pure phenols: Obtained by the purification in the laboratory of crude cresylic acid. Weight taken, 120 grams. Caustic soda and water: One part pure NaOH dissolved in two parts water. By titration with N/2 H.
What to read after The Analysis of Coal Tar Creosote And Cresylic Acid Sheep Dips?
You can find similar books in the "Read Also" column, or choose other free books by Robert M Robert Macfarlane Chapin to read online
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