phenolphthalein


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Related to phenolphthalein: methyl orange

phe·nol·phthal·ein

 (fē′nōl-thăl′ēn′, -thăl′ē-ĭn, -thā′lēn′, -thā′lē-ĭn)
n.
A white or pale yellow crystalline powder, C20H14O4, used as an acid-base indicator, in making dyes, and formerly in medicine as an over-the-counter laxative.

phenolphthalein

(ˌfiːnɒlˈθeɪliːn; -lɪɪn; -ˈθæl-)
n
(Chemistry) a colourless crystalline compound used in medicine as a laxative and in chemistry as an indicator. Formula: C20H14O4

phe•nol•phthal•ein

(ˌfi nɔlˈθæl in, -i ɪn, -ˈfθæl-, -nɒl-)

n.
a white, crystalline compound, C20H14O4, used as an indicator in acid-base titration and as a laxative.
[1870–75]

phe·nol·phthal·ein

(fē′nōl-thăl′ēn′)
A white or pale-yellow, crystalline powder used as an indicator for acid and basic solutions. It is also used as a laxative and in making dyes.
ThesaurusAntonymsRelated WordsSynonymsLegend:
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
laxative - a mild cathartic
acid-base indicator - an indicator that changes color on going from acidic to basic solutions
References in periodicals archive ?
It also allowed them to build a quality control laboratory that optimized the grain drying process; Equipped with 01 stove, 01 scale, 01 desiccator, 01 resistance cooker, 01 metal tray, 01 titration burette, test tubes, 01 petri dish, pipettes, 01 beaker, 01 mortar, 01 PH tape, phenolphthalein and hydroxide of sodium.
The product in question, according to the health authority, were slimming capsules that contained sibutramine and phenolphthalein - two substances banned in the UAE due to their association with an increased risk of heart attacks and cancer.
1M NaOH solution using phenolphthalein indicator until the pink colour disappeared.
The phenolphthalein polyether ketone (PEK-C) resin used for electrospunning nanofibers was received from Xuzhou engineering plastic factory.
A Phenolphthalein test failed to provide a positive presumptive indicator for blood, which was not surprising given it requires the heme component that would be degraded after 700 years.
The common indicator solutions include thymol blue, methyl orange, bromthymol blue, phenolphthalein, and bromphenol blue.
The commonly incriminated drugs causing FDE are allopurinol, barbiturates, benzodiazepines, captopril, clindamycin, carbamazepine, cephalosporins, dapsone, gentamycin, gold, lithium, NSAIDs, penicillins, phenolphthalein, phenytoin, sulphonamides, tetracyclines, and thiazides.
The free fatty acids were titrated against standard NaOH solution indicated with phenolphthalein.
In 2014, various weight loss products such as Magic Slim, Super Fat Burner, and Forever Beautiful, were recalled for containing substances deemed unsafe by the FDA such as Meridia, a weight loss drug, and the laxative, phenolphthalein.
Total Acidity was determined by the titration method using 1g of sample in a 125 ml Erlenmeyer flask, completing the volume with distilled water to 50 ml; adding 2 drops of 1% phenolphthalein and the titration was realized with 0.
Other examples of substances of particular public interest about which NTP provided critical research findings include AZT (azidothymidine) and a number of drug combinations used to prevent mother-to-child transmission of HIV (human immunodeficiency virus); fluoride; polychlorinated biphenyls; hexavalent chromium; acrylamide; silicone fluid used in breast implants; and phenolphthalein, which was once used in laxatives.
Benign causes of red-brown urine include intake of foods (beetroot, blackberries) and medication (rifampicin, phenolphthalein, and phenothiazines).