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  2. Nitrophenyl pentadienal - Wikipedia

    en.wikipedia.org/wiki/Nitrophenyl_pentadienal

    Nitrophenyl pentadienal, nitrophenylpentadienal, NPPD, or METKA (Russian for "mark") colloquially known as "spy dust", [1] is a chemical compound used as a tagging agent by the KGB during the Cold War Soviet Era. Soviet authorities in Moscow tracked

  3. Collodion - Wikipedia

    en.wikipedia.org/wiki/Collodion

    Another method, using tannin, invented by Major C. Russell in 1861, followed and in 1864 W.E. Bolton and E.J. Sayce mixed silver bromide with collodion, so that by the mid-1860s the wet-plate process was being replaced.

  4. List of chemical compounds with unusual names - Wikipedia

    en.wikipedia.org/wiki/List_of_chemical_compounds...

    Chemical nomenclature, replete as it is with compounds with very complex names, is a repository for some names that may be considered unusual. A browse through the Physical Constants of Organic Compounds in the CRC Handbook of Chemistry and Physics (a fundamental resource) will reveal not just the whimsical work of chemists, but the sometimes peculiar compound names that occur as the ...

  5. List of compounds - Wikipedia

    en.wikipedia.org/wiki/List_of_compounds

    Exotic molecule – a compound containing one or more exotic atoms; External links. Relevant links for chemical compounds are:

  6. Tungsten hexacarbonyl - Wikipedia

    en.wikipedia.org/wiki/Tungsten_hexacarbonyl

    Tungsten hexacarbonyl (also called tungsten carbonyl) is an organometallic compound with the formula W(CO) 6. This complex gave rise to the first example of a dihydrogen complex. [2] Like its chromium and molybdenum analogs, this colorless compound is noteworthy as a volatile, air-stable derivative of tungsten in its zero oxidation state.

  7. Nitrocellulose - Wikipedia

    en.wikipedia.org/wiki/Nitrocellulose

    Nitrocellulose (also known as cellulose nitrate, flash paper, flash cotton, guncotton, pyroxylin and flash string, depending on form) is a highly flammable compound formed by nitrating cellulose through exposure to a mixture of nitric acid and sulfuric acid.