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  2. 2-Chloropyridine - Wikipedia

    en.wikipedia.org/wiki/2-Chloropyridine

    2-Chloropyridine is an aryl chloride with the formula C 5 H 4 ClN. It is a colorless liquid that is mainly used to generate fungicides and insecticides in industry. It is a colorless liquid that is mainly used to generate fungicides and insecticides in industry.

  3. Globally Harmonized System of Classification and Labelling of ...

    en.wikipedia.org/wiki/Globally_Harmonized_System...

    The pictogram for harmful substances of the Globally Harmonized System of Classification and Labelling of Chemicals.. The Globally Harmonized System of Classification and Labelling of Chemicals (GHS) is an internationally agreed-upon standard managed by the United Nations that was set up to replace the assortment of hazardous material classification and labelling schemes previously used around ...

  4. AN/PYQ-10 - Wikipedia

    en.wikipedia.org/wiki/AN/PYQ-10

    An E-8 crew member entering data using an AN/PYQ-10 before a flight The AN/PYQ-10 Simple Key Loader (SKL) is a ruggedized, portable, hand-held fill device , for securely receiving, storing, and transferring data between compatible cryptographic and communications equipment.

  5. List of unsolved problems in chemistry - Wikipedia

    en.wikipedia.org/wiki/List_of_unsolved_problems...

    This article needs attention from an expert in chemistry. The specific problem is: Incomplete list. WikiProject Chemistry may be able to help recruit an expert.

  6. Ceramide - Wikipedia

    en.wikipedia.org/wiki/Ceramide

    Ceramide accumulation has been found following treatment of cells with a number of apoptotic agents, including ionizing radiation, [2] [14] UV light, [15] TNF-alpha, [16] and chemotherapeutic agents. This suggests a role for ceramide in the biological responses of all these agents.

  7. 2-Bromopyridine - Wikipedia

    en.wikipedia.org/wiki/2-Bromopyridine

    2-Bromopyridine reacts with butyllithium to give 2-lithiopyridine, [2] which is a versatile reagent. [3] Pyrithione can be prepared in a two-step synthesis from 2-bromopyridine by oxidation to the N-oxide with a suitable peracid followed by substitution using either sodium dithionite or sodium sulfide with sodium hydroxide to introduce the thiol functional group.

  8. Pyridinium chlorochromate - Wikipedia

    en.wikipedia.org/wiki/Pyridinium_chlorochromate

    Pyridinium chlorochromate in a vial. Pyridinium chlorochromate (PCC) is a yellow-orange salt with the formula [C 5 H 5 NH] + [CrO 3 Cl] −.It is a reagent in organic synthesis used primarily for oxidation of alcohols to form carbonyls.

  9. Dispersion (chemistry) - Wikipedia

    en.wikipedia.org/wiki/Dispersion_(chemistry)

    A solution describes a homogeneous mixture where the dispersed particles will not settle if the solution is left undisturbed for a prolonged period of time. A colloid is a heterogeneous mixture where the dispersed particles have at least in one direction a dimension roughly between 1 nm and 1 μm or that in a system discontinuities are found at ...