alizarine การใช้

• An 1881 recipe for Alizarine ink may be found in the " Household Cyclopedia of General Information ".
• Alizarine and other mordant colours are mainly used for any goods that have to resist repeated washings or prolonged exposure to light.
• However, in the modern dyeing process artificial chemical dyes ( aniline ) like alizarine red, napthol and indigo are used to obtain the red, blue and other colour effects.
• The leaves also contain a range of hydroxybenzoic acids : gallic acid and its ethyl ester, gentisic acid, anthranilic acid, protocatechuic acid, and ellagic acid ( alizarine yellow ).
• The chemical name for the pigment is alizarin, of the anthraquinone-group, and was used to make the alizarine ink in 1855 by the Professor Leonhardi of Dresden, Germany.
• In this case the silk frequently must be prepared in alizarine oil, after which it is treated in all respects like cotton, namely steamed, washed and soaped, the colours used being the same.
• Alizarin in the most common usage of the term has a deep red color, but the term is also part of the name for several related non-red dyes, such as Alizarine Cyanine Green and Alizarine Brilliant Blue.
• Alizarin in the most common usage of the term has a deep red color, but the term is also part of the name for several related non-red dyes, such as Alizarine Cyanine Green and Alizarine Brilliant Blue.
• Some colours are printed on pure bleached cloth, but all patterns containing alizarine red, rose and salmon shades are considerably brightened by the presence of oil, and indeed very few, if any, colours are detrimentally affected by it.
• The uniform design selected and produced for the unit consisted of tunic and breeches in a rich sapphire blue ( officially alizarine sapphire ) with gold frogging and lace of the near-standard international hussar pattern and black sealskin busbies with orange-yellow plumes.