Tracy High School and Potassium iodate: Difference between pages
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| Name = Potassium iodate |
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| OtherNames = iodic acid, potassium salt |
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| Section1 = {{Chembox Identifiers |
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| CASNo = 7758-05-6 |
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}} |
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| Section2 = {{Chembox Properties |
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| Formula = KIO<sub>3</sub> |
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| MolarMass = 214.00 g/mol |
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| Appearance = white crystalline powder |
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| Density = 3.89 g/cm³, solid |
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| Solubility = 32g/100ml (100°C) |
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| MeltingPt = 560°C<br />partial decomposition |
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| BoilingPt = |
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}} |
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| Section7 = {{Chembox Hazards |
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| EUClass = not listed |
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}}<!-- |
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| [[NFPA 704]] |
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| {{NFPA 704 | Health = 1 | Flammability = 0 | Reactivity = 1}} |
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'''Tracy Joint Union High School''' is a [[secondary education]] school with more than 2,800 students enrolled for the 2007-2008 school year. It is located on 11th Street in [[Tracy, California]], a town of 81,000 residents. It is one of four high schools currently in Tracy. |
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| Section8 = {{Chembox Related |
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| OtherAnions = [[potassium iodide]]<br />[[potassium periodate]]<br />[[potassium bromate]]<br />[[potassium chlorate]] |
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| OtherCations = [[sodium iodate]]<br />[[silver iodate]]<br /> |
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}} |
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}} |
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'''Potassium iodate''' ([[Potassium|K]][[Iodine|I]][[Oxygen|O<sub>3</sub>]]) is a [[chemical compound]]. It is sometimes used in radiation treatment, as it can replace radioactive iodine from the [[thyroid]]. |
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Tracy High offers curricular programs designed to meet the needs of its diverse population. These include the International Baccalaureate Program, the Ag-Science Academy, a Performing Arts Magnet, Child Development and Education, Food Education and Service Training (FEAST), and Industrial Technology. In 2007 the school was named a California Distinguished High School.<!-- Image with unknown copyright status removed: [[Image:Old west buliding (2).jpg|thumb|west building built in 1917]] --> |
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==Chemical properties== |
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In 2006 the voters passed Measure E, which will provide the funds to completely renovate the campus. In October 2006 the old west building, built in 1917, was torn down because it was condemned by the state of California. It will be replaced by a new 40-classroom building in the mission style, with a scheduled opening in late 2008. The new building is intended to be part of Tracy High School's math department. |
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Potassium iodate is an [[oxidizing agent]] and as such it can cause fires if in contact with combustible materials or [[reducing agents]]. It can be prepared by reacting a potassium-containing base such as [[potassium hydroxide]] with [[iodic acid]], for example: |
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:[[Iodic acid|HIO<sub>3</sub>]] + [[Potassium hydroxide|KOH]] → KIO<sub>3</sub> + [[Water|H<sub>2</sub>O]] |
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The West Side Union High School, renamed Tracy Union High School in 1928, is located on Tracy's eastern edge on 12 acres of land on Eleventh street. Prior to its opening in 1917, high school students attended classes in second-floor classrooms at Tracy School on Central Avenue. Before 1912 students had to attend school in Stockton or elsewhere. |
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It can also be prepared by adding [[iodine]] to a hot, concentrated solution of potassium hydroxide. |
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The high school, designed by W.H. Weeks in the mission style, was built on the unit system so additions could be made without changing the building's style. Costing about $65,000, the school was originally built with 14 classrooms and an auditorium with seating for about 1,000 people. In 1922 a gymnasium was added so that the school would meet California accreditation requirements. |
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:3 [[iodine|I<sub>2</sub>]] + 6 [[Potassium hydroxide|KOH]] → KIO<sub>3</sub> + 5 [[potassium iodide|KI]] + 3 [[water|H<sub>2</sub>O]] |
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The first two sports played at the high school were baseball and football. Coached by G.M. "Bull" Hunter and Assistant Coach Pat Bone. Tracy's West Side Union High School football team lost all eight games in 1921 in their season. |
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Conditions/substances to avoid include: [[heat]], [[Shock (mechanics)|shock]], [[friction]], combustible materials, reducing materials, [[aluminium]], [[organic compounds]], [[carbon]], [[hydrogen peroxide]] and [[sulfide]]s. |
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Tracy High's stadium was recently renamed the Wayne Schneider Stadium, with the field keeping the current name, Peter B. Kyne Field. |
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Recently the 2007 Mock Trial team made their way to the state competition. |
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==Applications== |
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In 2008, the Tracy High Baseball team won their first ever league title. |
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Potassium iodate is used for iodination of table salt, because iodide can be oxidized by molecular oxygen to iodine under wet conditions. To prevent this US companies add [[thiosulfate]]s or other [[antioxidant]]s to the potassium iodide, while in some other countries potassium iodate is used as source for iodine. It is also an ingredient in baby formula milk. |
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Like [[potassium bromate]], potassium iodate is occasionally used as a [[Flour treatment agent|maturing agent]] in baking. |
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== Alma Mater == |
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<i>Tracy High, our Alma Mater, |
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<br>Colors green and gold, |
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<br>We're for you and all you stand for, |
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<br>Loyalty untold. |
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<br>Ever striving, onward driving, |
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<br>We will never fail |
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<br>Tracy High, our Alma Mater, |
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<br>Hail to thee - All Hail!</i> |
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===Radiation protection=== |
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== Popular culture == |
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* A scene in the film ''[[The Candidate (1972 film)|The Candidate]]'' was shot in Tracy, utilizing the school's homecoming parade as the film's campaign parade for the movie's fictional senatorial candidate, played by [[Robert Redford]]. Members of Tracy High's staff, including principal and vice-principal, had cameo roles as [[United States Secret Service|Secret Service]] agents. |
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* The Tracy High football field and MVP trophy are named after [[Peter B. Kyne]], a novelist from [[San Francisco]] whose [[Bohemian Club]] friends orchestrated the naming in 1927, Peter B. Kyne and his Bohemian Club friends had given the money to purchase the equipment required for early Tracy High sports. |
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Potassium iodate may be used to protect against accumulation of [[radioiodine|radioactive iodine]] in the [[thyroid]] by saturating the body with a stable source of [[iodine]] prior to exposure.<ref>John Astbury, Stephen Horsley, Nick Gent. [http://jpubhealth.oxfordjournals.org/cgi/reprint/21/4/412 "Evaluation of a scheme for the pre-distribution of stable iodine (potassium iodate) to the civilian population residing within the immediate countermeasures zone of a nuclear submarine construction facility"], ''Journal of Public Health Medicine''. Vol. 21, No. 4, pp. 412-414. Retrieved on 2008-10-13.</ref> [[Ireland]], [[Singapore]], [[United Arab Emirates]], and [[US state|US states]] [[Idaho]] and [[Utah]] are known to stock potassium iodate in [[tablet]] form. Approved by the [[World Health Organization]], potassium iodate for radiation protection is an alternative to [[potassium iodide]] which studies have shown causes cancer in lab rats<ref>K. Takegawa, K. Mitsumori, H. Onodera, T. Shimo, K. Kitaura, K. Yasuhara, M. Hirose and M. Takahashi. [http://dx.doi.org/10.1016/S0278-6915(00)00068-5 "Studies on the carcinogenicity of potassium iodide in F344 rats"], ''Food and Chemical Toxicology Journal''. 2000 Sep;38(9):773-81. Retrieved on 2008-10-13.</ref> and carries poor [[shelf life]] in hot and humid [[climate|climates]].<ref>Pahuja DN, Rajan MG, Borkar AV, Samuel AM. [http://www.ncbi.nlm.nih.gov/pubmed/8225995 "Potassium iodate and its comparison to potassium iodide as a blocker of 131I uptake by the thyroid in rats."] ''[[PubMed]]''. 1993 Nov;65(5):545-9. Retrieved on 2008-10-13.</ref> Potassium iodate is approved by the [[FDA]] but is not on their Green List which is used for filling federal contracts for a thyroid blocker. |
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==Notable alumni== |
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* [[Nick Eddy]] - former NFL player. |
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* [[Rod Lauren]] - Singer/actor. |
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* [[Christine Maddox]] - December 1973 [[Playmate of the Month]]. |
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* [[Richard Pombo]] - Former Legislator/Rancher. |
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[[Image:Potassium iodate tablets.jpg|thumb|right|An unopened box of potassium [[iodate]] tablets, produced and distributed to the population of the [[Republic of Ireland]] in case of a terror attack on the [[Sellafield]] [[nuclear power station]] in the [[United Kingdom]].]] |
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{| class="wikitable" |
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==External links== |
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|+ Recommended Dosage for Radiological Emergencies involving radioactive iodine<ref>''Guidelines for Iodine Prophylaxis following Nuclear Accidents'', [[World Health Organization]], Update 1999</ref> |
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*[http://www.tracyhigh.com Official website] |
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! Age |
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*[http://www.thssports.com/ Sports website] |
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! KI in mg |
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*[http://www.tracyhighbaseball.com/ Baseball website] |
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! KIO<sub>3</sub> in mg |
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*[http://www.tracyhighfootball.com/ Football website] |
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|- |
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| Over 12 years old |
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| 130 |
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| 170 |
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|- |
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| 3 - 12 years old |
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| 65 |
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| 85 |
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|- |
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| 1 - 36 months old |
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| 32 |
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| 42 |
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|- |
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| < 1 month old |
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| 16 |
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| 21 |
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|} |
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==References== |
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{{Unreferenced|date=November 2007}} |
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{{reflist}} |
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[[Category:Iodates]] |
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[[Category:Potassium compounds]] |
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[[de:Kaliumiodat]] |
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{{California-school-stub}} |
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[[pl:Jodan(V) potasu]] |
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[[Category:Magnet schools in California]] |
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[[pt:Iodato de potássio]] |
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[[Category:High schools in San Joaquin County, California]] |
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[[zh:碘酸钾]] |
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Revision as of 21:18, 13 October 2008
Potassium iodate (KIO3) is a chemical compound. It is sometimes used in radiation treatment, as it can replace radioactive iodine from the thyroid.
Chemical properties
Potassium iodate is an oxidizing agent and as such it can cause fires if in contact with combustible materials or reducing agents. It can be prepared by reacting a potassium-containing base such as potassium hydroxide with iodic acid, for example:
It can also be prepared by adding iodine to a hot, concentrated solution of potassium hydroxide.
Conditions/substances to avoid include: heat, shock, friction, combustible materials, reducing materials, aluminium, organic compounds, carbon, hydrogen peroxide and sulfides.
Applications
Potassium iodate is used for iodination of table salt, because iodide can be oxidized by molecular oxygen to iodine under wet conditions. To prevent this US companies add thiosulfates or other antioxidants to the potassium iodide, while in some other countries potassium iodate is used as source for iodine. It is also an ingredient in baby formula milk.
Like potassium bromate, potassium iodate is occasionally used as a maturing agent in baking.
Radiation protection
Potassium iodate may be used to protect against accumulation of radioactive iodine in the thyroid by saturating the body with a stable source of iodine prior to exposure.[1] Ireland, Singapore, United Arab Emirates, and US states Idaho and Utah are known to stock potassium iodate in tablet form. Approved by the World Health Organization, potassium iodate for radiation protection is an alternative to potassium iodide which studies have shown causes cancer in lab rats[2] and carries poor shelf life in hot and humid climates.[3] Potassium iodate is approved by the FDA but is not on their Green List which is used for filling federal contracts for a thyroid blocker.
| Age | KI in mg | KIO3 in mg |
|---|---|---|
| Over 12 years old | 130 | 170 |
| 3 - 12 years old | 65 | 85 |
| 1 - 36 months old | 32 | 42 |
| < 1 month old | 16 | 21 |
References
 |
- ^ John Astbury, Stephen Horsley, Nick Gent. "Evaluation of a scheme for the pre-distribution of stable iodine (potassium iodate) to the civilian population residing within the immediate countermeasures zone of a nuclear submarine construction facility", Journal of Public Health Medicine. Vol. 21, No. 4, pp. 412-414. Retrieved on 2008-10-13.
- ^ K. Takegawa, K. Mitsumori, H. Onodera, T. Shimo, K. Kitaura, K. Yasuhara, M. Hirose and M. Takahashi. "Studies on the carcinogenicity of potassium iodide in F344 rats", Food and Chemical Toxicology Journal. 2000 Sep;38(9):773-81. Retrieved on 2008-10-13.
- ^ Pahuja DN, Rajan MG, Borkar AV, Samuel AM. "Potassium iodate and its comparison to potassium iodide as a blocker of 131I uptake by the thyroid in rats." PubMed. 1993 Nov;65(5):545-9. Retrieved on 2008-10-13.
- ^ Guidelines for Iodine Prophylaxis following Nuclear Accidents, World Health Organization, Update 1999