The Preparation of Anthrarufine
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The anthraquinone -alpha-monosulphonic acid is thus converted into erythro-oxyanthra- quinone, the alpha]_ - alpha^ - anthraquinone disulphonic acid into anthrarufine and the alpha^ - alpha, anthraquinone disulphonic acid into chrysa/.ino.
To illustrate the process for anthra- rufine the following example is used: Heat 20 parts of sodium salt of alpha, - alpha^ anthraquinone disulphonic acid 30 parts of slaked lime Ca(0H)2 and 400 parts -29- of water for twelve hours to 180 - 190 C.
and on dbco...mposing the resulting melt with hydrochloric acid anthrarufine is obtained.
-30- E. P. 25738 - A.D. 1903.
100 parts of commercial lime salt of 1:5 anthraquinone di-sulpho-acid are stirred up in 500 parts of hot water, and in this are slaked 100 parts of lime, and then 30 parts of salt peter and 100 parts of a 20 per cent solution calcium chloride are added, and the whole is kept under pressure in the digester at a temperature of 180 - 220 degrees Celsius until there is no longer any trace of oxy- sulpho-acid.
What to read after The Preparation of Anthrarufine?
You can find similar books in the "Read Also" column, or choose other free books by Podolsky, David H to read onlineMoreLess
To quickly assess the difficulty of the text, read a short excerpt:
The anthraquinone -alpha-monosulphonic acid is thus converted into erythro-oxyanthra- quinone, the alpha]_ - alpha^ - anthraquinone disulphonic acid into anthrarufine and the alpha^ - alpha, anthraquinone disulphonic acid into chrysa/.ino.
To illustrate the process for anthra- rufine the following example is used: Heat 20 parts of sodium salt of alpha, - alpha^ anthraquinone disulphonic acid 30 parts of slaked lime Ca(0H)2 and 400 parts -29- of water for twelve hours to 180 - 190 C.
and on dbco...mposing the resulting melt with hydrochloric acid anthrarufine is obtained.
-30- E. P. 25738 - A.D. 1903.
100 parts of commercial lime salt of 1:5 anthraquinone di-sulpho-acid are stirred up in 500 parts of hot water, and in this are slaked 100 parts of lime, and then 30 parts of salt peter and 100 parts of a 20 per cent solution calcium chloride are added, and the whole is kept under pressure in the digester at a temperature of 180 - 220 degrees Celsius until there is no longer any trace of oxy- sulpho-acid.
What to read after The Preparation of Anthrarufine?
You can find similar books in the "Read Also" column, or choose other free books by Podolsky, David H to read onlineMoreLess
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