英语词汇“phenolphthalein”的英英意思、用法、释义、翻译、读音、例句、短语、词组-英语词典

phenolphthalein

/ˌfiːnɒlˈ(f)θaliːn

/ /ˌfiːnɒlˈ(f)θeɪliːn/

noun [mass noun] Chemistry

A colourless crystalline solid (pink in alkaline solution) used as an acid-base indicator and medicinally as a laxative.

Chemical formula: C₂₀H₁₄O₄.

The maintenance phase consisted of ‘Agarol’ (active ingredients: liquid paraffin, phenolphthalein, benzoic acid, and sorbic acid) 5-30 ml once or twice daily, senna granules, or bisacodyl tablets....

The non-osmotic laxatives, phenolphthalein and senna, partly act by stimulating secretory mechanisms in the intestine.
The listing is based on findings from feeding studies of phenolphthalein that caused cancer in multiple organs in multiple species of experimental animals.

Origin

Late 19th century: from phenol + -phthal- (from naphthalene) + -in¹.

单词	phenolphthalein
释义	phenolphthalein /ˌfiːnɒlˈ(f)θaliːn / /ˌfiːnɒlˈ(f)θeɪliːn/ noun [mass noun] Chemistry A colourless crystalline solid (pink in alkaline solution) used as an acid-base indicator and medicinally as a laxative. Chemical formula: C₂₀H₁₄O₄. The maintenance phase consisted of ‘Agarol’ (active ingredients: liquid paraffin, phenolphthalein, benzoic acid, and sorbic acid) 5-30 ml once or twice daily, senna granules, or bisacodyl tablets.... The non-osmotic laxatives, phenolphthalein and senna, partly act by stimulating secretory mechanisms in the intestine. The listing is based on findings from feeding studies of phenolphthalein that caused cancer in multiple organs in multiple species of experimental animals. Origin Late 19th century: from phenol + -phthal- (from naphthalene) + -in¹.
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