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  2. List of reagent testing color charts - Wikipedia

    en.wikipedia.org/wiki/List_of_reagent_testing...

    It is advised to check the references for photos of reaction results. [1] Reagent testers might show the colour of the desired substance while not showing a different colour for a more dangerous additive. [2]

  3. Colour Index International - Wikipedia

    en.wikipedia.org/wiki/Colour_Index_International

    Colorants (both dyes and pigments) are listed using a dual classification which use the Colour Index Generic Name (the prime identifier) and Colour Index Constitution Numbers. These numbers are prefixed with C.I. or CI, for example, C.I. Acid Orange 7 or C.I. 15510 .

  4. Buff (colour) - Wikipedia

    en.wikipedia.org/wiki/Buff_(colour)

    Buff (Latin: bubalinus) [2] [3] is a light brownish yellow, ochreous colour, typical of buff leather. [4] [5] Buff is a mixture of yellow ochre and white: [6] two parts of white lead and one part of yellow ochre produces a good buff, or white lead may be tinted with French ochre alone.

  5. Color chart - Wikipedia

    en.wikipedia.org/wiki/Color_chart

    Color chips or color samples from a plastic pellet manufacturer that enables customers to evaluate the color range as molded objects to see final effects. A color chart or color reference card is a flat, physical object that has many different color samples present. They can be available as a single-page chart, or in the form of swatchbooks or ...

  6. List of dyes - Wikipedia

    en.wikipedia.org/wiki/List_of_dyes

    Basic dye 11050 azo 2869-83-2: Juglone: Oil red BS Black walnut Natural brown 7 75500 natural 481-39-0: Kaempferol: Rhamnolutein Natural yellow 13 75640 natural 520-18-3: Kermes: Kermesic acid: Natural red 3 75460 natural 18499-92-8: Lac: Shellac Laccaic acid Xanthokermesic acid Natural red 25 75450 natural 60687-93-6: Lanosol yellow 4G ...

  7. Acid Blue 25 - Wikipedia

    en.wikipedia.org/wiki/Acid_Blue_25

    Acid Blue 25 is used for dyeing wool, silk and mixed fabric and printing them in a direct method. [2]The dye is extensively utilized to color leather, paper, cellulose, and PC blends during the manufacturing process.