Why does aminophenol act as a base in water

The Altmetric Attention Score is a quantitative measure of the attention that a research article has received online. Clicking on the donut icon will load a page at altmetric. Find more information on the Altmetric Attention Score and how the score is calculated. Trialkylamine and trialkylphosphine oxide extractants extracted the neutral form of p -aminophenol. Di 2-ethylhexyl phosphoric acid extracted both neutral and positive forms of p -aminophenol.

When the initial pH value was between p K a1 and p K a2 , a maximum distribution coefficient occurred. This pH dependence can be explained by the variation of the molar fraction of neutral p -aminophenol with pH value. To whom correspondence should be addressed. Data , 48 , 6 , View Author Information. Journal of the American Chemical Society , 18 , Chemistry of Materials , 27 10 , Journal of Agricultural and Food Chemistry , 60 11 , Avdeenko , S.

Konovalova , , I. Yakymenko ,. Synthesis of N-[3- 2,3-dimethyl-1H-indolyl hydroxyphenyl]arylsulfon aroyl amides. Voprosy Khimii i Khimicheskoi Tekhnologii , 6 , Role of dissolved oxygen in nitroarene reduction by a heterogeneous silver textile catalyst in water.

New Journal of Chemistry , 44 41 , Advanced Materials , 29 13 , Open Chemistry , 13 1 , Open Chemistry, Vol. Open Chemistry. Copy to clipboard. Log in Register. Download article PDF. Wash rinse the crystals once with a minimum amount of cold water a few mL should suffice. Allow the crystals to air dry under vacuum.

Collect the crude crystalline product and weigh to the nearest tenth of a gram. Record the weight. Recrystallize all but mg of your crude acetaminophen from water by first dissolving the solid in the minimum amount of hot boiling water. Do this carefully adding small amounts of hot water.

You do not want to have excess water. Work on a steam bath to keep the solution hot. Add another 2 mL of hot water. If there are no insoluble particles in the solution, you can allow it to cool slowly without having to first filter. If not, decant the hot solution or try to remove the particles with a spatula or Pasteur pipette while keeping the solution warm.

After crystallization begins, cool the solution more rapidly using an ice bath.