 | William Newton - 1864 - 424 Seiten
...operation by heating it to, or near to, its boiling point, until it assumes a rich purple color, and then I mix it with boiling water, and allow the mixture to cool ; when cold, it is tau. filtered or decanted. The aqueous solution which passes through the filter contains a red coloring... | |
 | 1865 - 538 Seiten
...follows : — ' ' 1 mix aniline with dry arsenic acid, and allow the mixture to stand for some timo, or I accelerate the operation by heating it to or near...spirit, furnishes a purple dye. These solutions of coloxiring matter may be used at once in the process of dyeing, concentrated or diluted according to... | |
 | Patent office - 1877 - 602 Seiten
...arsenic acid and allow the mixture " to stand for some time, or I accelerate the operation by " lieating it to or near to its boiling point until it assumes...to cool, when cold it is filtered or " decanted." In solution is a red colouring matter or dye and a tarry substance is on the filter which " dissolved... | |
 | Thomas Minchin Goodeve - 1884 - 664 Seiten
...by heating it to, or near to, its boiling point, until it assumes a rich purple colour, and then I mix it with boiling water, and allow the mixture to...cool ; when cold it is filtered or decanted." The filtered solution gave a red dye, and the residuum when dissolved in alcohol furnished a purple dye.... | |
 | James Roberts (Barrister-at-law) - 1903 - 780 Seiten
...follows : — " I mix aniline with dry arsenic acid, and allow the mixture to stand for some time, or I accelerate the operation by heating it to or near...solution which passes through the filter contains a red colouringmatter or dye, while a tarry substance remains on the filter ; this tarry substance, dissolved... | |
 | Frederick Pollock, Robert Campbell, Oliver Augustus Saunders, Arthur Beresford Cane, Joseph Gerald Pease, William Bowstead - 1915 - 916 Seiten
...follows: " I mix aniline with dry arsenic acid, and allow the mixture to stand for some time, or I accelerate the operation by heating it to or near...to cool: when cold it is filtered or decanted." The respondent, in and prior to the year 1863, had manufactured a red dye, which he called " Holliday's... | |
 | Tal Golan - 2004 - 350 Seiten
...letter, and heat it "to or near its boiling point until it assumes a rich purple colour, and then I mix it with boiling water, and allow the mixture to...solution which passes through the filter contains a red coloring matter or dye." Arsenic acid turned out to be the cheapest and most manageable among all patented... | |
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... or I accelerate the operation by heating it to or near to its boiling point, until it assumes a rich purple colour, and I then mix it with boiling water and allow the mixture to cool. When cold it is filtered or decanted. 