Iodides


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Related to Iodides: Chlorides, Sulfides

Iodides

 

chemical compounds of iodine and other elements. The iodides of many metals are hydriodic acid salts. Typical salts are the iodides of metals in Groups I and II of the Mendeleev periodic system. Most of these are readily soluble in water (except for Agl, Cu2I2, and Hg2I2) as well as in alcohols and other polar solvents. Iodides of metals from Groups III, IV, V, and VI as well as the iodides of nonmetals (B, Si, P, As, Sb) are fusible and are even soluble in nonpolar solvents. Upon heating, these iodides readily dissociate into the element and iodine, which is used in the preparation of especially pure substances (titanium, zirconium, and many others; seeIODIDE PROCESS).

Interaction with elementary iodine is characteristic of certain iodides, as a result of which polyiodes (for example, KI3) are formed. Iodides are obtained by the direct interaction of elements, the interaction of oxides or carbonates with hydriodic acid, and by other methods. Iodides are sometimes also referred to as organic iodine derivatives (for example, CH3I—methyl iodide).

References in periodicals archive ?
Expression of the sodium iodide symporter in human kidney.
Effect of iodide on total antioxidant status of human serum.
The discovery of the stable halides--chloride, iodide, bromide, and fluoride--seems to have been a French enterprise.
During the early 1850s, Chatin (16,17) studied the relationship between the prevalence of goiter and the concentrations of iodide in the soil, water, and food supplies of different localities.
2 mg/day, and iodide intake of 2 mg or more was considered "excessive and potentially harmful.
4) Japanese women do not stop consuming iodine-rich foods during pregnancy, and Japanese fetuses are exposed to maternal peripheral levels of iodide at concentrations of [10.
Iodide has no disinfectant activity; however, iodine is rapidly converted to iodide in the stomach and absorbed into the blood.
With large doses of iodide, the iodide accumulation and the absolute rate of organification both decreased.
Under the influence of sunlight, the iodides in seawater are oxidized to diatomic iodine 12.
Without interfering substances present in the gastrointestinal tract, inorganic iodine, iodates, and iodides are quantitatively absorbed.
Medicoiodophobes suffer from: A) a split personality which results in iodophobia within the orthoiodosupple mentation range previously used safely and successfully in medical practice and iodophylia for megadoses of iodide (up to 12gm/day); B) double standards, which render those physicians intolerant to the minor side effects of the inorganic forms and extremely tolerant to the severe side effects of the radioactive and organic forms; C) amnesia pertaining to the inorganic, non-radioactive forms when making therapeutic decisions; D) confusion, attributing the severe side effects of organic iodine-containing drugs to inorganic iodine/iodide; and E) an altered state of consciousness, allowing doublethink, doublespeak, and contradictory logic to become acceptable.
CONCLUSIONS: The association of perchlorate exposure with increased urinary TSH in infants with low urinary iodide is consistent with previous findings.