Phenolphthalein (/fɛˈnɒl(f)θəliːn/[citation needed] feh-NOL(F)-thə-leen) is a chemical compound with the formula C20H14O4 and is often written as "HIn"...

blood test, first described in 1903, in which the chemical indicator phenolphthalein is used to detect the possible presence of hemoglobin. It relies on...

precise amount of the analyte and a small amount of indicator (such as phenolphthalein) placed underneath a calibrated burette or chemistry pipetting syringe...

1933. A universal indicator is usually composed of water, 1-propanol, phenolphthalein, sodium hydroxide, methyl red, bromothymol blue, sodium bisulfite,...

indicator is a solution containing potassium hexacyanoferrate(III) and phenolphthalein. It turns blue in the presence of Fe2+ ions, and pink in the presence...

ranges and colour transformations associated with specific indicators: Phenolphthalein is widely recognized as one of the most commonly used acid-base indicators...

structure affects a chromophore in the pH indicator molecule. For example, phenolphthalein is a pH indicator whose structure changes as pH changes as shown in...

used as a laxative in 1953 because of its structural similarity to phenolphthalein. It is on the World Health Organization's List of Essential Medicines...

variety of more complex chemical compounds including dyes (such as phenolphthalein), fungicides (such as tetrachlorophthalide, often referred to simply...

Chlorophenol red Dixylenolphthalein Guaiacolphthalein α-Naphtholphthalein Phenolphthalein Phenolsulfonphthalein Tetrabromophenolphthalein Thymol blue Thymolphthalein...

chemical reaction. It can be found by means of an indicator, for example phenolphthalein or methyl orange. The endpoint (related to, but not the same as the...

during World War I. In World War II, neutral or acidic solutions of phenolphthalein, a chemical compound extracted from pills for constipation, were used...

industry: Water detection pastes contain a mix of calcium oxide and phenolphthalein. Should this paste come into contact with water in a fuel storage tank...

of alcoholic potassium hydroxide (KOH) of known concentration using phenolphthalein as a colour indicator. The acid number for an oil sample is indicative...

Thymolphthalein can be synthesized from thymol and phthalic anhydride. Phenolphthalein "Thymolphthalein". pubchem.ncbi.nlm.nih.gov. Hahn HH; Cheuk SF; Elfenbein...

10−3 M) have a pH of 10 or greater. This means that they will turn phenolphthalein from colorless to pink. Concentrated solutions are caustic (causing...

pH greater than 7, the most suitable indicator to use is one, like phenolphthalein, that changes color at high pH. The situation is analogous to that...

traces of phenolphthalein and sibutramine were detected by the company in batches of the capsule form of Po Chai, and were recalled. Phenolphthalein's past...

methyl orange is, in fact, orange. pH indicator Methyl red Litmus Phenolphthalein Bromothymol blue Congo Red Universal indicator Haynes, William M.,...

theory in small carbon rings. In 1871 he discovered the synthesis of phenolphthalein by condensation of phthalic anhydride with two equivalents of phenol...

phph or PhPh may refer to: phph, an abbreviation for the pH indicator phenolphthalein PhPh, chemical shorthand notation for two phenyl groups attached to...

The dissociation mechanism of chlorophenol red is similar to that of phenolphthalein meaning it can be used as a color indicator. The dissociation of hydroxyl...

colon 36–8 hours Aloe vera (aloin) Anthraquinone colon 58–10 hours Phenolphthalein Triphenylmethane colon 48 hours Bisacodyl (oral) Triphenylmethane colon...

sulfur atom being part of a cyclic group, similar to the structure of phenolphthalein. However, this cyclic structure could not be confirmed by X-ray crystallography...

it is protonated, it becomes intensely violet. Other examples are phenolphthalein and thymolphthalein, colorless in acidic to neutral pH, but becoming...

reaction with para-chlorophenol followed by hydrolysis of the chloride. Phenolphthalein can be synthesized by the condensation of phthalic anhydride with two...

NF-157 NF-279 NF-449 Opiranserin (VVZ-149) Oxidized-ATP Phenol Red Phenolphthalein PPADS PPNDS PSB-12062 Puerarin (Radix puerariae) Purotoxin 1 RB-2 Ro...

Burette over a conical flask with phenolphthalein indicator used for acid–base titration...

of two compounds present in ferroxyl indicator solution (along with phenolphthalein) that turns blue (Prussian blue) in the presence of Fe2+ ions, and...

range of the color change the better. In some indicators, such as phenolphthalein, one of the species is colorless, whereas in other indicators, such...