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 ...
Noun1.phenolphthalein- 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, (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. What property of phenolphthalein mak...
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 and colorless below pH 8 ...
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 ...
Phenolphthalein can be used as an inhibitor and pH indicator. It also induces centrosome amplification and tubulin depolymerization in vitro. Definition An acid–base indicator that is colorless in acid solutions and becomes red if the pH rises above the transition range of 8–9.6. It is used as...
Phenolphthalein is a color indicator used in acid/base titration. It has also been used as a laxative, but its over-the-counter uses had been withdrawn because of toxicological concerns over carcinogenicity. The metabolism of [ 14 C]-phenolphthalein was investigated in F344 rats and B6C3F1 ...
Laxin Laxogen Lilo Medilax Modane [Wiki] [Trade name] Modane Plus Phenolax Phenolphtaleine phénolphtaléine Phenolphthalein ACS reagent Phenolphthalein,white Phenolphthalein,yellow Phenolphthalein-Nile Blue indicator Phenolphthaleinum Phenophthalein Phillips Gelcaps Phthalide 3,3,...
phenolphthalein[ ,fi:nɔl'fθæliin, -li:n ] 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 ...
1. 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 行业词典 ...