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CAS No 81-90-3 , 2-[bis(4-hydroxyphenyl)methyl]benzoic acid Search by region : Canada

  • Name: 2-[bis(4-hydroxyphenyl)methyl]benzoic acid
  • Synonyms: Benzoic acid; EINECS 201-384-4;81-90-3; 2-(bis(4-hydroxyphenyl)methyl)-; 2-[Bis(4-hydroxyphenyl)methyl]benzoic acid;2-[bis(4-hydroxyphenyl)methyl]benzoic acid;
  • CAS Registry Number:
  • Melting Point: 238 °C
  • Flash Point: 299.7°C
  • Boiling Point: 548.7°C at 760 mmHg
  • Density: 1.323g/cm3
  • Safety Statements: 24/25
  • Flash Point: 299.7°C
  • EINECS: 201-384-4
  • Molecular Weight: 320.33864
  • InchiKey: FFFPYJTVNSSLBQ-UHFFFAOYSA-N
  • InChI: InChI=1S/C20H16O4/c21-15-9-5-13(6-10-15)19(14-7-11-16(22)12-8-14)17-3-1-
    2-4-18(17)20(23)24/h1-12,19,21-22H,(H,23,24)
  • Molecular Formula: C20H16O4
  • Molecular Structure:CAS No:81-90-3 2-[bis(4-hydroxyphenyl)methyl]benzoic acid

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References of 2-[bis(4-hydroxyphenyl)methyl]benzoic acid
Title: Phenolphthalin
CAS Registry Number: 81-90-3
CAS Name: 2-[Bis(4-hydroxyphenyl)methyl]benzoic acid
Synonyms: decolorized phenolphthalein; phthalin; 4￠,4￠￠-dihydroxytriphenylmethane-2-carboxylic acid
Molecular Formula: C20H16O4
Molecular Weight: 320.34
Percent Composition: C 74.99%, H 5.03%, O 19.98%
Literature References: Made by boiling phenolphthalein with zinc dust in alkaline soln. Called "Kastle-Meyer reagent" when in soln. Prepd by dissolving 2 g phenolphthalin + 20 g KOH in a desired amt of doubly distd H2O and diluting with an equal vol of 95% ethanol. Detailed directions for prepn of test soln and its use: Lecoq, Bull. Soc. Chim. Belg. 54, 186-202 (1945), C.A. 41, 2346i (1947).
Properties: Colorless crystals, mp 237°. Insol in water; sol in alcohol, ether, aq alkali. The alkaline solns gradually become pink on exposure to air or other oxidizing substances.
Melting point: mp 237°
Use: As a reagent for oxidases, blood, HCN, peroxides, copper.