Investigation of Hydroxyapatite

Investigation of Hydroxyapatite - Roshni Sheth CH 118-M3...

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Roshni Sheth CH 118-M3 March 10, 2010 Investigation of Hydroxyapatite Introduction The purpose of the experiment is to synthesize the compound calcium hydoxyapatite (Ca 10 (PO 4 ) 6 (OH) 2 ) and test its solubility in acid solutions. Calcium hydroxyapatite is a principle component of tooth enamel and bone, and the mineral calcium is necessary for the processes of tooth and bone growth and development. Because these processes slow after the age of 35, it is important for humans to get large amounts of calcium when they are young, especially because if the body does not obtain enough calcium, calcium will be taken from the bones, making them weaker. Studying the effects of acid solutions on this compound is especially important in the study of how teeth enamel can wear away in the presence of acid solutions. The experiment should provide data that supports the hypothesis that (Ca 10 (PO 4 ) 6 (OH) 2 ) will be at least somewhat soluble in each acid solution. Methods and Materials In the production of calcium hydroxyapatite, the equation is as follows: 2H 2 O + 10 Ca(NO 3 ) 2 (s) + 6 (NH 4 ) 2 HPO 4 (s) + 8 NH 3 (aq) Ca 10 (PO 4 ) 6 (OH) 2 (s) + 20 NH 4 NO 3 (aq)
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Investigation of Hydroxyapatite - Roshni Sheth CH 118-M3...

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