iodine test

iodine test
(for starch) when a compound solution of iodine is added to starch, and especially to an acid or neutral solution of cooked starch paste, a deep blue color is produced that disappears on heating and reappears on cooling.

Medical dictionary. 2011.

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  • Iodine test — The Iodine test is used to test for the presence of starch. Iodine solution iodine dissolved in an aqueous solution of potassium iodide reacts with starch producing a deep blue black color.This reaction is the result of the formation of… …   Wikipedia

  • radioactive iodine test — noun test of thyroid function in which the patient is given an oral dose of radioactive iodine 131 • Hypernyms: ↑diagnostic test, ↑diagnostic assay • Hyponyms: ↑radioactive iodine excretion test, ↑radioactive iodine uptake test, ↑RAIU …   Useful english dictionary

  • Iodine (disambiguation) — Iodine is a chemical element.Iodine may also refer to:*Isotopes of iodine: **Iodine 123 **Iodine 124 **Iodine 125 **Iodine 129 **Iodine 131*Iodine clock reaction *Iodine deficiency *Iodine Recordings *Iodine test *Iodine value *Tincture of… …   Wikipedia

  • protein-bound iodine test — (for thyroid function) a formerly common test in which the amount of iodine firmly bound to protein in the serum was determined by precipitating the proteins, yielding an estimate of serum thyroid hormone concentration. Errors were introduced if… …   Medical dictionary

  • Iodine — (IPAEng|ˈaɪədaɪn, ˈaɪədɪn, or IPA|/ˈaɪədiːn/; from el. ιώδης iodes violet ), is a chemical element that has the symbol I and atomic number 53. Naturally occurring iodine is a single isotope with 74 neutrons. Chemically, iodine is the least… …   Wikipedia

  • test — 1. To prove; to try a substance; to determine the chemical nature of a substance by means of reagents. 2. A method of examination, as to determine the presence or absence of a definite disease or of some substance in any of the fluids, tissues,… …   Medical dictionary

  • Iodine-131 — Infobox isotope alternate names =Radioiodine symbol =I mass number =131 mass = num neutrons =78 num protons =53 abundance = halflife =8.0197 days error halflife = background =#c9F text color = decay product = decay symbol = decay mass = decay… …   Wikipedia

  • iodine — /uy euh duyn , din/; in Chem. also /uy euh deen /, n. Chem. a nonmetallic halogen element occurring at ordinary temperatures as a grayish black crystalline solid that sublimes to a dense violet vapor when heated: used in medicine as an antiseptic …   Universalium

  • iodine value — ▪ chemistry also called  Iodine Number,         in analytical chemistry, measure of the degree of unsaturation of an oil, fat, or wax; the amount of iodine, in grams, that is taken up by 100 grams of the oil, fat, or wax. Saturated oils, fats,… …   Universalium

  • radioactive iodine excretion test — noun radioactive iodine test that measures the amount of radioactive iodine excreted in the urine • Hypernyms: ↑radioactive iodine test …   Useful english dictionary

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