what is phenolphthalein
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- Definition of PHENOLPHTHALEIN. : 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. See phenolphthalein defined for kids.ADVERTISEMENT.efinition of PHENOLPHTHALEIN. : 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. See phenolphthalein defined for kids. ADVERTISEMENT.
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- Phenolphthalein is an organic compound (C20H14O4) used as an acid-base indicator. The compound is colorless in acidic solution and pinkish in basic solution (with the transition occuring around pH 9).henolphthalein is an organic compound (C20H14O4) used as an acid-base indicator. The compound is colorless in acidic solution and pinkish in basic solution (with the transition occuring around pH 9).
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- 1 Hide a few drops of phenolphthalein solution in the bottom of a wine glass. 2  Phenolphthalein is an organic compound that is colorless in acidic and neutral solution. 3  It has an intense red color in alkaline solution. 4  Pour the alkaline water into the wine glass to convert the phenolphthalein to its red form. Phenolphthalein is an organic compound that is colorless in acidic and neutral solution. 2  It has an intense red color in alkaline solution. 3  Pour the alkaline water into the wine glass to convert the phenolphthalein to its red form.
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Phenethylamine Not to be confused with 1-phenylethylamine. Phenethylamine (PEA), also known as β-phenylethylamine (β-PEA) and 2-phenylethan-1-amine, is an organic compound and a natural monoamine alkaloid, a trace amine, and also the name of a class of chemicals with many members that are well known for their psychoactive and stimulant effects.
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- Phenolphthalein Blood Test Kit. Phenolphthalein is one of the most commonly used chemicals in the field and laboratory to indicate the presence of blood. Our pre-packaged kit contains all the reagents to conduct a presumptive blood test. This simples 4 step test is easy to use and is housed in a small plastic cup. An immediate pink color on the end of the swab indicates a presumptive positive for blood. 60 tests per kit.
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- Noun. 1. 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.. 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.
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alpha -Pyrrolidinopentiophenone -Pyrrolidinopentiophenone. α-Pyrrolidinopentiophenone (also known as α-pyrrolidinovalerophenone, α-PVP, O-2387, β-keto-prolintane, Prolintanone, or Desmethyl Pyrovalerone) is a synthetic stimulant of the cathinone class developed in the 1960s that has been sold as a designer drug. Colloquially it is sometimes called flakka or gravel.
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Types of Electrolytes: The compounds which give ions either in molten state or in solution are called electrolytes. The technique of titration is used to find out accurately how much of a chemical substance is dissolved in a given volume of a solution, that is, the concentration of the solution. The technique uses a set of apparatus with which volumes of solutions can be measured to an accuracy of greater than 0.1 cm 3.he pH curve for the strong acid-weak base titration shows that phenolphthalein is not a suitable indicator but methyl orange is fine. For the titration of weak acid-strong base, phenolphthalein, but not methyl orange, is a suitable indicator.
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Chemical Forums Slowly pour the contents of the first cup into the second cup. At first, the pouring will result in a red color. With continued pouring, the acid will neutralize the base, and the red color will disappear. I know that phenolphthalein turns pink in basic solutions and is colorless in acidic solutions.That's why it was colorless in sulfuric acid at first. But what I don't understand is how come the phenolphthalein turned pink when the contents of the first cup was poured into the second cup.lowly pour the contents of the first cup into the second cup. At first, the pouring will result in a red color. With continued pouring, the acid will neutralize the base, and the red color will disappear. I know that phenolphthalein turns pink in basic solutions and is colorless in acidic solutions.
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Phenolphthalein Phenolphthalein is often used as an indicator in acid–base titrations. For this application, it turns colorless in acidic solutions and pink in basic solutions. Phenolphthalein is slightly soluble in water and usually is dissolved in alcohols for use in experiments.It is a weak acid, which can lose H + ions in solution.The phenolphthalein molecule is colorless, and the phenolphthalein ion is pink. When a base is added to the phenolphthalein, the molecule ⇌ ions equilibrium shifts to the right, leading to more ionization as H + ions are removed.This is predicted by Le Chatelier's principle.henolphthalein is often used as an indicator in acid–base titrations. For this application, it turns colorless in acidic solutions and pink in basic solutions. Phenolphthalein is slightly soluble in water and usually is dissolved in alcohols for use in experiments.
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WHAT IS DIVALPROEX? Divalproex acid is a chemical compound that has found clinical use as an anticonvulsant and mood-stabilizing drug, primarily in the treatment of epilepsy and bipolar disorder, but also used to treat migraine headaches and schizophrenia.
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What Is Dilantin (Phenytoin)? Dilantin is the brand name of the drug phenytoin, which is used to treat seizures. The medication is also used to prevent seizures after brain surgery. The drug is in a class of medications known as anticonvulsants. It works by decreasing abnormal electrical activity in the brain.
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What Is Allantoin/Camphor/Phenol Topical? Camphor and phenol are mild topical (for the skin) pain relievers. The combination of allantoin, camphor, and phenol is used to treat pain, itching, or severe lip dryness caused by chapped lips or cold sores (fever blisters). This medication will not cure herpes simplex, a virus that causes cold sores.
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How to prepare phenolphthalein indicator? Report Abuse. A phenolphthalein indicator is nothing more than litmus paper which indicates if a particular substance is a base (alkaline) or acid.You can read more about the process here: http://en.wikipedia.org/wiki/Litmus Litmus is a water-soluble mixture of different dyes extracted from lichens, especially Roccella tinctoria.eport Abuse. A phenolphthalein indicator is nothing more than litmus paper which indicates if a particular substance is a base (alkaline) or acid.
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- Phenylpropanolamine is an ingredient used in prescription and over-the-counter (OTC) drug products as a nasal decongestant to relieve stuffy nose or sinus congestion and in OTC weight control drug products to control appetite.
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- Medical Definition of PHENOLPHTHALEIN. : a white or yellowish white crystalline compound C20H14O4 that is used in analysis as an indicator because its solution is brilliant red in alkalies and is decolorized by acids and that is used in medicine as a laxative.efinition of PHENOLPHTHALEIN. : 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. See phenolphthalein defined for kids. ADVERTISEMENT.
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- Naphthalene is a white solid that evaporates easily. It is also called mothballs, moth flakes, white tar, and tar camphor. When mixed with air, naphthalene vapors easily burn. Fossil fuels, such as petroleum and coal, naturally contain naphthalene. Burning tobacco or wood produces naphthalene. The major products made from naphthalene are moth repellents, in the form of mothballs or crystals, and toilet deodorant blocks.
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Anti-diabetic medication 1 Exenatide (also Exendin-4, marketed as Byetta) is the first GLP-1 agonist approved for the treatment of type 2 diabetes. 2  Exenatide is not an analogue of GLP but rather a GLP agonist. 3  Exenatide has only 53% homology with GLP, which increases its resistance to degradation by DPP-4 and extends its half-life.
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Dipalmitoylphosphatidylcholine Dipalmitoylphosphatidylcholine (DPPtdCho) is a phospholipid (and a lecithin) consisting of two palmitic acids attached of a phosphatidylcholine head-group and is the major constituent of many pulmonary surfactants. It is zwitterionic by virtue of having a negative charge on the phosphate group and a positive charge on the quaternary ammonium group.
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- 1. naphthalene-a white crystalline strong-smelling hydrocarbon made from coal tar or petroleum and used in organic synthesis and as a fumigant in mothballs. camphor ball, mothball-a small sphere of camphor or naphthalene used to keep moths away from stored clothing. white crystalline aromatic compound, C 10 H 8, derived from coal tar or petroleum and used in manufacturing dyes, moth repellents, and explosives and as a solvent. Also called tar camphor. [ naphth(a) + al(cohol) + -ene .]. naph′tha·len′ic (-lĕn′ĭk) adj.
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Phalaenopsis , known as moth orchids, abbreviated Phal in the horticultural trade, is an orchid genus of approximately 60 species. Phalaenopsis is one of the most popular orchids in the trade, through the development of many artificial hybrids.It is native to southern China, the Indian Subcontinent, Southeast Asia (Thailand, Philippines, Malaysia, Indonesia, etc.), New Guinea, the Bismarck Archipelago, and Queensland.halaenopsis is one of the most popular orchids in the trade, through the development of many artificial hybrids.
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Phytofleurâ¢ Fire Tulip Phytofleur™ Fire Tulip is a Spathodea campanulata flower extract with many medicinal uses. It also finds use in personal care applications. This product...
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What Is Phenylephrine? Phenylephrine is a nasal decongestant that provides relief from nasal discomfort caused by colds, allergies, and hay fever.It works by reducing swelling of the blood vessels in the nose.Phenylephrine relieves symptoms but doesn’t treat the cause of the symptoms or speed recovery.It’s the active ingredient in dozens of generic products, including children’s cough medications and over-the-counter (OTC) drugs.henylephrine is a nasal decongestant that provides relief from nasal discomfort caused by colds, allergies, and hay fever.
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What is Genistein? 10 most extreme places on Earth. Genistein is a polyphenol that is found in soybeans and other plants, such as red clover and kudzu. It is a type of flavonoid known as an isoflavone. Genistein is frequently found with the isoflavone daidzein, and together they are considered soy isoflavones.These compounds have been widely studied for their effects on human health. They have been associated with a reduction in cancer in population studies that examine diets and rates of diseases.enistein is frequently found with the isoflavone daidzein, and together they are considered soy isoflavones. These compounds have been widely studied for their effects on human health. They have been associated with a reduction in cancer in population studies that examine diets and rates of diseases.
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- This test is used to measure and monitor the amount of phenobarbital in the blood and to determine whether the drug level is within a therapeutic range. Phenobarbital is an anti-epileptic drug used to prevent seizures in people with epilepsy.This test is used to ensure that the blood level of phenobarbital is not too low so as to cause a recurrence of seizures or too high as to cause side effects.his test is used to measure and monitor the amount of phenobarbital in the blood and to determine whether the drug level is within a therapeutic range. Phenobarbital is an anti-epileptic drug used to prevent seizures in people with epilepsy.
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phenol phenol - any of a class of weakly acidic organic compounds; molecule contains one or more hydroxyl groups. pyrogallic acid, pyrogallol - a toxic white lustrous crystalline phenol used to treat certain skin diseases and as a photographic developer. organic compound - any compound of carbon and another element or a radical. creosol - a colorless to yellow aromatic liquid that is a constituent of creosote. cresol, methyl phenol - any of three poisonous colorless isomeric phenols; derived from coal or wood tar; used as a disinfectant.