Phenolphthalein (Phthalimetten) is an acid-base pH indicator. 此产品仅用于科学研究,我们不为任何个人用途提供产品和服务 库存:现货 可选规格 包装 1g 数量 确认取消 ￥430-430 包装 价格 促销价 数量 1g ￥537.00 430.00 -+ 已选0种0瓶 金额:￥0.00 ...
英汉-汉英词典 n.酚酞 近义、反义、联想词 词 n. laxative,acid-base indicator 联想词 reagent试剂;hydroxide氢氧化物;acetone丙酮;pH酸碱度符号;solubility溶度,溶性,可解决性,可解释性,溶解性;aqueous水的,水般的;ammonia氨,阿摩尼亚;hydrochloride氢氯化物;colorless无色的;benzene苯;liquid液体的; ...
phenolphthalein, (C20H14O4), an organic compound of the phthalein family that is widely employed as anacid-base indicator. As an indicator of a solution's pH, phenolphthalein is colourless below pH 8.5 and attains a pink to deep red hue above pH 9.0. How does phenolphthalein work as a...
Phenolphthalein (Phthalin) is an acid-base indicator which is colorless in acid solution, but turns pink to red as the solution becomes alkaline. It is used medicinally as a cathartic. 别名酚酞, Phthalin, Phthalimetten, Euchessina 化学信息 ...
phenolphthalein: A dye used as anacid-base indicator. It is colourlessbelow pH 8 and red above pH 9.6. Itis used in titrations involving weakacids and strong bases. It is also usedas a laxative. brand name Evac-Q-Tabs (Savage); Ex-Lax (Novartis); Modane (Savage); Prulet (Mission ...
英音[fi:nɔ:l'fθæli:n] ; 美音[fi:nɔ:l'fθæli:n] ; 名词 酚酞 英语解释 a laxative used in many preparations under various trade names; also used as an acid-base indicator in titrations involving weak acids and strong bases because it is brilliant red at high alkalinity ...
This indicator changes colour at a pH of approximately 8.8.[In-]Calculate the ratio n at pH 8.8.rati ([ln-])/(Hln1)=(f) Methyl orange is another acid-base indicator. Its structure in aqueous solution at pH 4.4 is shown.methyl orange H3C N一-N =N —-SO。 Na+H3C(i) On the ...
n.a laxative used in many preparations under various trade names; also used as an acid-base indicator in titrations involving weak acids and strong bases because it is brilliant red at high alkalinity and colorless below pH 8 phenolphthalein_化学行业词汇 酚酞 phenolphthalein_医学行业词汇 〔USP...
Define Phenolphthaleins. Phenolphthaleins synonyms, Phenolphthaleins pronunciation, Phenolphthaleins translation, English dictionary definition of Phenolphthaleins. n. A white or pale yellow crystalline powder, C20H14O4, used as an acid-base indicator, i
: a white or yellowish white compound used as a laxative and as an acid-base indicator because its solution is brilliant red in alkalies and clear in acids Medical Definition phenolphthalein noun phe·nol·phtha·lein ˌfēn-ᵊl-ˈthal-ē-ən -ˈthal-ˌēn -ˈ...