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  2. Iodine clock reaction - Wikipedia

    en.wikipedia.org/wiki/Iodine_clock_reaction

    Iodide from potassium iodide is converted to iodine in the first reaction: 2 I − + 2 H + + H 2 O 2 → I 2 + 2 H 2 O The iodine produced in the first reaction is reduced back to iodide by the reducing agent, cysteine. At the same time, cysteine is oxidized into cystine. 2 C 3 H 7 NO 2 S + I 2 → C 6 H 12 N 2 O 4 S 2 + 2 I − + 2 H +

  3. Potassium iodide - Wikipedia

    en.wikipedia.org/wiki/Potassium_iodide

    Potassium iodide is a component in the electrolyte of dye sensitised solar cells (DSSC) along with iodine. Potassium iodide finds its most important applications in organic synthesis mainly in the preparation of aryl iodides in the Sandmeyer reaction, starting from aryl amines. Aryl iodides are in turn used to attach aryl groups to other ...

  4. Iodine–starch test - Wikipedia

    en.wikipedia.org/wiki/Iodine–starch_test

    A bottle of iodine solution used on apples to determine the correct harvest time. The chart shows the level of residual starch. The cut surface of an apple stained with iodine, indicating a starch level of 4–5. The iodine–starch test is a chemical reaction that is used to test for the presence of starch or for iodine. The combination of ...

  5. Iodine in biology - Wikipedia

    en.wikipedia.org/wiki/Iodine_in_biology

    Compared to the elemental form, potassium iodide has a median lethal dose (LD 50) that is relatively high in several animals: in rabbits, it is 10 g/kg; in rats, 14 g/kg, and in mice, 22 g/kg. [73] The tolerable upper intake level for iodine as established by the Food and Nutrition Board is 1,100 μg/day for adults. The safe upper limit of ...

  6. Wolff–Chaikoff effect - Wikipedia

    en.wikipedia.org/wiki/Wolff–Chaikoff_effect

    This becomes evident secondary to elevated levels of circulating iodide. The Wolff–Chaikoff effect is an effective means of rejecting a large quantity of imbibed iodide, and therefore preventing the thyroid from synthesizing large quantities of thyroid hormone. [7] Excess iodide transiently inhibits thyroid iodide organification.

  7. New potassium iodide tablets offered to those near active ...

    www.aol.com/news/potassium-iodide-tablets...

    May 30—WILKES-BARRE — The Pennsylvania Department of Health (DOH) on Thursday said it will offer free potassium iodide — or KI — tablets on June 12, to Pennsylvanians who are within 10 ...

  8. Isotopes of iodine - Wikipedia

    en.wikipedia.org/wiki/Isotopes_of_iodine

    Potassium iodide has been distributed to populations exposed to nuclear fission accidents such as the Chernobyl disaster. The iodide solution SSKI, a saturated solution of potassium (K) iodide in water, has been used to block absorption of the radioiodine (it has no effect on other radioisotopes from fission). Tablets containing potassium ...

  9. College Football Playoff: Bettors like Ohio State in the ...

    www.aol.com/sports/college-football-playoff...

    Bettors are continuing to side with the favorites ahead of the College Football Playoff semifinals.. Both Notre Dame and Ohio State were getting the majority of money at BetMGM ahead of the Orange ...