On the Aniline Or Coal Tar Colours
On the Aniline Or Coal Tar Colours
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In our eReader you can find the full English version of the book. Read On the Aniline Or Coal Tar Colours Online - link to read the book on full screen. Our eReader also allows you to upload and read Pdf, Txt, ePub and fb2 books. In the Mini eReder on the page below you can quickly view all pages of the book - Read Book On the Aniline Or Coal Tar Colours
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After the apparatus is closed the steam is allowed to enter the steam acket, and the heating continued for five or six hours ; . He plug is then removed from the lid of the apparatus, and the alcohol or unused iodide of ethyl distilled off. Che resulting product is dissolved in water, filtered, and >recipitated with chloride of sodium, but sometimes it is irst treated with caustic alkali, to remove all the iodine, o that it may be recovered. Thus obtained, the colour- ing matter is of a golden ...lustre if of a blue shade, and of greenish if of a red shade.
Like all the other colours we have considered, the EEofmann violets are nearly white organic bases, their composition differing according to the shade of colour, ;hus : A red shade is composed of .. C 22 H 23 N 3 A red violet shade, of ...... C 24 H 2, N 3 A very blue shade .......... C 2 6 H 3 1 N 3 The colours of the Hofmann violets are remarkable for ;heir brilliancy, but, unfortunately, they do not resist the action of light so well as might be desired ; it is re- markable, however, that the regard for fastness seems ;o have given way to the desire for brilliancy.
What to read after On the Aniline Or Coal Tar Colours?
You can find similar books in the "Read Also" column, or choose other free books by William Henry Perrin to read onlineMoreLess
To quickly assess the difficulty of the text, read a short excerpt:
After the apparatus is closed the steam is allowed to enter the steam acket, and the heating continued for five or six hours ; . He plug is then removed from the lid of the apparatus, and the alcohol or unused iodide of ethyl distilled off. Che resulting product is dissolved in water, filtered, and >recipitated with chloride of sodium, but sometimes it is irst treated with caustic alkali, to remove all the iodine, o that it may be recovered. Thus obtained, the colour- ing matter is of a golden ...lustre if of a blue shade, and of greenish if of a red shade.
Like all the other colours we have considered, the EEofmann violets are nearly white organic bases, their composition differing according to the shade of colour, ;hus : A red shade is composed of .. C 22 H 23 N 3 A red violet shade, of ...... C 24 H 2, N 3 A very blue shade .......... C 2 6 H 3 1 N 3 The colours of the Hofmann violets are remarkable for ;heir brilliancy, but, unfortunately, they do not resist the action of light so well as might be desired ; it is re- markable, however, that the regard for fastness seems ;o have given way to the desire for brilliancy.
What to read after On the Aniline Or Coal Tar Colours?
You can find similar books in the "Read Also" column, or choose other free books by William Henry Perrin to read onlineMoreLess
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