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Phenolphthalein (/ f ɛ ˈ n ɒ l (f) θ ə l iː n / [citation needed] feh-NOL(F)-thə-leen) is a chemical compound with the formula C 20 H 14 O 4 and is often written as "HIn", "HPh", "phph" or simply "Ph" in shorthand notation. Phenolphthalein is often used as an indicator in acid–base titrations.
Chlorophenol red is an indicator dye that changes color from yellow to violet in the pH range 5.4 to 6.8. [2] The pH of a substance is determined by taking the negative logarithm of the Hydronium ion concentration and the indictor changes color due to the dissociation of H + ions. [3]
Philippine Phosphate Fertilizer Corporation (PhilPhos) is a fertilizer company based in Makati, Metro Manila [1] which is partly-owned by the government of Nauru. Its headquarters is located at the Pacific Star Building [ 1 ] which was also built by the Nauru government.
Phenol red exists as a red crystal that is stable in air. Its solubility is 0.77 grams per liter (g/L) in water and 2.9 g/L in ethanol. [1] It is a weak acid with pK a = 8.00 at 20 °C (68 °F).
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The phthalide core is found a variety of more complex chemical compounds including dyes (such as phenolphthalein), fungicides (such as tetrachlorophthalide, often referred to simply as "phthalide"), and natural oils (such as butylphthalide).
Today's Wordle Answer for #1274 on Saturday, December 14, 2024. Today's Wordle answer on Saturday, December 14, 2024, is DROOL. How'd you do? Next: Catch up on other Wordle answers from this week.
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