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 ?
Hyperthyrotropinemia during iodide administration in normal children and children born with neonatal transient hypothyroidism.
In another study, 44 (46%) Peace Corps volunteers who ingested an average of at least 50 mg iodide per day over a period of up to 1 year (from the use of iodine resins for water disinfection) had enlarged thyroids, but 68% of these had normal thyroid function tests (20).
Amiodarone, used for serious cardiac dysrhythmias, contains 37% organic iodide by weight that releases 9-10 mg free iodine from a 300-mg dose.
Extrathyroidal side effects of iodine include gastrointestinal (nausea, epigastric pain, and diarrhea), sialadenitis, and iodide fever.
Wolff (37) reviewed reported cases of iodide goiter and concluded that large amounts of iodine (from 18 mg to [is greater than] 1 g/day) were required for prolonged periods ([is less than] 6 months in a few cases but [is greater than or equal to] 5 years of iodide therapy in many cases).
Two cases of myxoedema attributed to iodide administration.
Relation between qualitative and quantitative alterations in thyroid hormone synthesis induced by varying doses of iodide.
More specifically, we wanted to know whether any such association was stronger in those with lower iodide status and in females and thus consistent with NHANES 2001-2002 data showing an association between higher urinary perchlorate, higher serum TSH, and lower serum [T.
For the current study, urine samples were shipped on dry ice to the Division of Laboratory Sciences, National Center for Environmental Health, Centers for Disease Control and Prevention (CDC; Atlanta, GA) and analyzed for perchlorate, thiocyanate, nitrate, and iodide using ion chromatography tandem mass spectrometry (Blount et al.
The geometric mean urinary concentrations of perchlorate, iodide, and thiocyanate differed by feeding method, and TSH and [T.
a) Perchlorate Iodide ([micro]g/g cr) ([micro]g/g cr) Feeding method Breast milk 28.
Iodide was detected in all 206 urine samples, but the levels of thiocyanate and nitrate were below the LOD in 13 (6%) and 29 (14%) samples, respectively.