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  2. Methyl violet - Wikipedia

    en.wikipedia.org/wiki/Methyl_violet

    Methyl violet is a family of organic compounds that are mainly used as dyes.Depending on the number of attached methyl groups, the color of the dye can be altered. Its main use is as a purple dye for textiles and to give deep violet colors in paint and ink.

  3. pH indicator - Wikipedia

    en.wikipedia.org/wiki/PH_indicator

    Low pH color Transition low end Transition high end High pH color Gentian violet (Methyl violet 10B) [4] yellow 0.0 2.0 blue-violet Malachite green (first transition) yellow 0.0 2.0 green Malachite green (second transition) green 11.6 14.0 colorless Thymol blue (first transition) red 1.2 2.8 yellow Thymol blue (second transition) yellow 8.0 9.6 ...

  4. Methyl violet 2B - Wikipedia

    en.wikipedia.org/wiki/Methyl_violet_2B

    Methyl violet 2B (Tetramethylparosanilinium chloride, 4,4'-[(4-Imino-2,5-cyclohexadien-1-yliden)methylen]bis(N,N-dimethylaniline)hydrochloride) is a violet triarylmethane dye from the group of cationic dyes and an essential component of C.I. Basic Violet 1 (trivial name methyl violet). Methyl violets are mixtures of tetramethyl (2B ...

  5. List of dyes - Wikipedia

    en.wikipedia.org/wiki/List_of_dyes

    Methyl violet 2B: Gentian violet B Basic violet 1 42535 triarylmethane 8004-87-3: Methyl violet 6B: 42536 triarylmethane 84215-49-6: Methyl yellow: Butter yellow Solvent yellow 2 11020 azo 60-11-7: Methylene blue: Swiss blue Basic blue 9 Solvent blue 8 52015 thiazin 61-73-4: Methylene green: Basic green 5 52020 thiazin 2679-01-8: Milling red FR ...

  6. File:Methyl Violet 2B.svg - Wikipedia

    en.wikipedia.org/wiki/File:Methyl_Violet_2B.svg

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  7. Universal indicator - Wikipedia

    en.wikipedia.org/wiki/Universal_indicator

    A roll of universal indicator pape Colors of universal indicator. A universal indicator is a pH indicator made of a solution of several compounds that exhibit various smooth colour changes over a wide range pH values to indicate the acidity or alkalinity of solutions. A universal indicator can be in paper form or present in a form of a solution ...

  8. Shades of violet - Wikipedia

    en.wikipedia.org/wiki/Shades_of_violet

    This is an accepted version of this page This is the latest accepted revision, reviewed on 13 December 2024. Varieties of the color violet Violet Spectral coordinates Wavelength 380–450 nm Frequency 800–715 THz Color coordinates Hex triplet #8000FF sRGB B (r, g, b) (128, 0, 255) HSV (h, s, v) (270°, 100%, 100%) CIELCh uv (L, C, h) (41, 134, 275°) Source W3C B: Normalized to [0–255 ...

  9. Crystal violet - Wikipedia

    en.wikipedia.org/wiki/Crystal_violet

    The name gentian violet was originally used for a mixture of methyl pararosaniline dyes (methyl violet), but is now often considered a synonym for crystal violet. The name refers to its colour, being like that of the petals of certain gentian flowers; it is not made from gentians or violets .