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  2. Pyrotechnic colorant - Wikipedia

    en.wikipedia.org/wiki/Pyrotechnic_colorant

    The color of the flame is dependent on the metal cation; the anion of the salt has very little direct influence. The anions however influence the flame temperature, both by increasing it (e.g. nitrates, chlorates) and decreasing it (e.g. carbonates, oxalates), indirectly influencing the flame brightness and brilliancy.

  3. Colored fire - Wikipedia

    en.wikipedia.org/wiki/Colored_fire

    Generally, the color of a flame may be red, orange, blue, yellow, or white, and is dominated by blackbody radiation from soot and steam. When additional chemicals are added to the fuel burning, their atomic emission spectra can affect the frequencies of visible light radiation emitted - in other words, the flame appears in a different color ...

  4. List of inorganic pigments - Wikipedia

    en.wikipedia.org/wiki/List_of_inorganic_pigments

    Persian blue: made by grinding up the mineral Lapis lazuli. The most important mineral component of lapis lazuli is lazurite (25% to 40%), a feldspathoid silicate mineral with the formula (Na,Ca) 8 (AlSiO 4) 6 (S,SO 4,Cl) 1–2. Cobalt pigments. Cobalt blue (PB28): cobalt(II) aluminate. Cerulean blue (PB35): cobalt(II) stannate. Cerium uranium ...

  5. Color of chemicals - Wikipedia

    en.wikipedia.org/wiki/Color_of_chemicals

    The color of chemicals is a physical property of chemicals that in most cases comes from the excitation of electrons due to an absorption of energy performed by the chemical. The study of chemical structure by means of energy absorption and release is generally referred to as spectroscopy .

  6. Flame test - Wikipedia

    en.wikipedia.org/wiki/Flame_test

    The characteristic bluish-green color of the flame is due to the copper. A flame test is relatively quick test for the presence of some elements in a sample. The technique is archaic and of questionable reliability, but once was a component of qualitative inorganic analysis .

  7. Chemical coloring of metals - Wikipedia

    en.wikipedia.org/wiki/Chemical_coloring_of_metals

    The color depends on voltage. Many other electrolytes can be used—even Coca-Cola. Straw yellow / 10V – violet / 29 V – blue / 30 V – blue green 45 V – light green / 55 V – purple-red / 75 V – grey / 110 V. It is mandatory that this process must be performed wearing rubber gloves (potentially dangerous voltage!). [35]

  8. 'Dark Waters': Here's the toxic reason why you should toss ...

    www.aol.com/lifestyle/dark-waters-heres-toxic...

    That specific chemical compound is called perfluorooctanoic acid, or PFOA. Here's what you need to know. Sure, we've all said, "Eh, everything causes cancer," but the risks of PFOA are not over ...

  9. Blue pigments - Wikipedia

    en.wikipedia.org/wiki/Blue_pigments

    Chemical structure of copper phthalocyanine. Copper phthalocyanine ("phthalo blue") is a synthetic blue pigment frequently used in paints, inks, and dyes.It is highly valued for its superior properties such as light fastness, tinting strength, covering power and resistance to the effects of alkalis and acids.

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