Search results
Results from the WOW.Com Content Network
FD&C Blue No. 1 Acid blue 9 Food blue 2 42090 triarylethlamine 3844-45-9: Brilliant cresyl blue: Cresyl blue BBS Basic dye 51010 oxazin 81029-05-2: Brilliant green: Malachite green G Zeylonka Basic green 1 42040 triarylmethane 633-03-4: Bromsulfthalein: BSP triarylmethane 71-67-0: Bromocresol green: BCG triarylmethane 76-60-8: Bromocresol ...
Indigo dye is an organic compound with a distinctive blue color. Indigo is a natural dye extracted from the leaves of some plants of the Indigofera genus, in particular Indigofera tinctoria . Dye-bearing Indigofera plants were commonly grown and used throughout the world, particularly in Asia, with the production of indigo dyestuff economically ...
Bluing (steel) is a passivation process in which steel is partially protected against rust Bluing may also refer to: Bluing (fabric), a blue dye used to improve the appearance of fabrics
In borosilicate glasses rich in boron, sulfur imparts a blue color. With calcium it yields a deep yellow color. [4] Manganese can be added in small amounts to remove the green tint given by iron, or in higher concentrations to give glass an amethyst color. Manganese is one of the oldest glass additives, and purple manganese glass was used since ...
Brilliant blue FCF (Blue 1) is a synthetic organic compound used primarily as a blue colorant for processed foods, medications, dietary supplements, and cosmetics. [1] It is classified as a triarylmethane dye and is known under various names, such as FD&C Blue No. 1 or acid blue 9.
Blue pigments are natural or synthetic materials, usually made from minerals and insoluble with water, used to make the blue colors in painting and other arts. The raw material of the earliest blue pigment was lapis lazuli from mines in Afghanistan, that was refined into the pigment ultramarine .
During the Middle Ages, artists usually made purple by combining red and blue pigments; most often blue azurite or lapis-lazuli with red ochre, cinnabar, or minium. They also combined lake colors made by mixing dye with powder; using woad or indigo dye for the blue, and dye made from cochineal for the red. [64]
The dye is made from phenol, first oxidising it with oxalic acid and sulfuric acid to make a red substance called rosolic acid. By treating this with ammonia, a dye called red coralline or péonine was made. When reacted with aniline, the blue azuline was produced. This was invented by Jules Persoz in Paris.