enow.com Web Search

Search results

  1. Results from the WOW.Com Content Network
  2. Ferric chloride test - Wikipedia

    en.wikipedia.org/wiki/Ferric_chloride_test

    The ferric chloride test is used to determine the presence of phenols in a given sample or compound (for instance natural phenols in a plant extract). Enols , hydroxamic acids , oximes, and sulfinic acids give positive results as well. [ 1 ]

  3. Iron(III) chloride - Wikipedia

    en.wikipedia.org/wiki/Iron(III)_chloride

    The affinity of iron(III) for oxygen ligands was the basis of qualitative tests for phenols. Although superseded by spectroscopic methods, the ferric chloride test is a traditional colorimetric test. [26] The affinity of iron(III) for phenols is exploited in the Trinder spot test. [27]

  4. Electrophilic halogenation - Wikipedia

    en.wikipedia.org/wiki/Electrophilic_halogenation

    A few types of aromatic compounds, such as phenol, will react without a catalyst, but for typical benzene derivatives with less reactive substrates, a Lewis acid is required as a catalyst. Typical Lewis acid catalysts include AlCl 3, FeCl 3, FeBr 3 and ZnCl 2. These work by forming a highly electrophilic complex which is attacked by the benzene ...

  5. Folin–Ciocalteu reagent - Wikipedia

    en.wikipedia.org/wiki/Folin–Ciocalteu_reagent

    The Folin–Ciocâlteu reagent (FCR) or Folin's phenol reagent or Folin–Denis reagent, is a mixture of phosphomolybdate and phosphotungstate used for the colorimetric in vitro assay of phenolic and polyphenolic antioxidants, also called the gallic acid equivalence method (GAE). [1] It is named after Otto Folin, Vintilă Ciocâlteu, and Willey ...

  6. 18 15-Minute Breakfast Recipes To Help You Poop - AOL

    www.aol.com/18-15-minute-breakfast-recipes...

    These easy and delicious 15-minute breakfast recipes contain at least six grams of fiber per serving to support better digestion and keep you regular.

  7. California company recalls over 540,000 tires due to lack of ...

    www.aol.com/california-company-recalls-over-540...

    A California-based tire company has recalled over 540,000 replacement tires mistakenly labeled as snow traction products, according to an announcement from the National Highway Traffic Safety ...

  8. 6 Canning Secrets Your Grandma May Have Forgotten To Tell You

    www.aol.com/6-canning-secrets-grandma-may...

    Test Kitchen Professional Renu Dhar agrees, “Always follow the recipe,” Dhar says. “Do not add or remove any ingredients. “Do not add or remove any ingredients.

  9. Tannin - Wikipedia

    en.wikipedia.org/wiki/Tannin

    The following describes the use of ferric chloride (FeCl3) tests for phenolics in general: Powdered plant leaves of the test plant (1.0 g) are weighed into a beaker and 10 ml of distilled water are added. The mixture is boiled for five minutes.