作者geninhuang (C'est La Vie)
看板Chemistry
標題Re: 請問有沒有人知道鄰苯二甲酸氫鉀(KHP)
時間Tue Dec 12 11:07:37 2006
※ 引述《aardvark0130 (哈..結果是師大地科)》之銘言：
: 想問一下有沒有人知道KHP的藥品性質@@?!
: 找了好久找不到@@"
結果我還是為了騙P幣所以幫你查了 Orz
From Merck Index
7773. Potassium Biphthalate.
Phthalic acid potassium acid salt; potassium acid phthalate;
potassium hydrogen phthalate; acid potassium phthalate. C8H5KO4;
mol wt 204.22. C 47.05%, H 2.47%, K 19.14%, O 31.34%. HOOCC6H4COOK.
Prepd by half-neutralization of a phthalic anhydride soln: F. J. Welcher,
Organic Analytical Reagents vol. 2 (Van Nostrand, New York, 1947) pp 75-79.
Orthorhombic crystals, stable in air. d= 1.636.
Acid reaction; pH of 0.05M aq soln at 25 deg = 4.005 (glass electrode).
Sol in about 12 parts cold water, 3 parts boiling water; slightly sol in
alcohol.
USE: As primary standard for preparing volumetric alkali solns,
also as a buffer in pH determinations.
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