The meaning of PHENOLPHTHALEIN is a white or yellowish-white crystalline compound C20H14O4 used in analysis as an indicator because its solution is brilliant red in alkalies and is decolorized by acids and in medicine as a laxative.
1.Phenolphthalein: This chemical is an organic dye that is toxic in large quantities. 酚酞:这个化学药品是一个有机染料,大剂量是有毒的。 2.The indicators in most common use for acid and alkali titrations are methyl orange, litmus, and phenolphthalein. 3.A chemical called phenolphthalein --...
Physicochemical properties: white paper. It is obtained by immersing the filter paper into the prepared phenolphthalein solution, and then immersing, drying and cutting. Colorless in acid and red in alkali Purpose: biochemical research. Determine the pH of the solution Saving: RT...
Phenolphthalein is a weak organic acid, at room temperature, appearing as white or microstrip yellow small crystals, being odorless, tasteless, insoluble in water and soluble in alcohol (ethanol) and ether. When dissolved in alcohol solution, it can be made of acid and alkali indicator. It is...
phenolphthalein 英/ˌfiːnɒl'(f)θæliːn/美/ˌfinolˈθælˌin/ 全球 生词本:添加笔记: 有奖纠错 | 划词 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...
It is often used to detect acid and alkali. In addition, the main uses of phenolphthalein are as follows: (1) Pharmaceutical industry pharmaceutical raw materials: Pharmaceutical laxatives, can stimulate the intestinal wall, cause intestinal peristalsis, promote defeca...
3, used as acid and alkali indicator, non-aqueous solution titration indicator and chromatography analysis reagents. General Description Phenolphthalein mainly acts on the large intestine, which produces semi-liquid excreta in 4 to 8 hours with little or no colic. The claim that yellow phenolphthalei...
Add 50 to 100 cc. hot, neutral alcohol, and titrate with N/2, N/4 or N/10 sodium hydroxide depending on the fatty acid content, using phenolphthalein as indicator. FromProject Gutenberg Titrate the distillate with N/10 alkali, using phenolphthalein as an indicator. ...
Acid–base titrimetric assay of hydroxyzine dihydrochloride in pharmaceutical samples The methods were applicable over the range of 2-20 mg HDH. The procedures were also applied for the determination of HDH in its dosage forms and ... R Nagaraju,B Kanakapura,V Basavaiah - 《Chemical Industry...
StabilityStable. Incompatible with strong oxidizing agents, alkalies. Water Solubility<0.1 g/100 mL MSDS Phenolphthalein MSDS(Chinese) Toxicological Information CHEMICAL IDENTIFICATION RTECS NUMBER : SM8380000 CHEMICAL NAME : Phenolphthalein CAS REGISTRY NUMBER : ...