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CAS No 125-20-2 , 3,3-bis(4-hydroxy-2-methyl-5-propan-2-ylphenyl)-2-benzofuran-1-one

  • Name: 3,3-bis(4-hydroxy-2-methyl-5-propan-2-ylphenyl)-2-benzofuran-1-one
  • Synonyms: 3,3-bis(4-hydroxy-2-methyl-5-propan-2-ylphenyl)-2-benzofuran-1-one; NSC-2186; 5',5''-Diisopropyl-2',2''-dimethylphenolphthalein; TCMDC-123951; NSC2186;Thymophthalein; MLS000736489; 125-20-2;
  • CAS Registry Number:
  • Transport: HAZARD
  • Melting Point: 251-253 ºC
  • Density: 1.187 g/cm3
  • Refractive index: 1.612
  • Safety Statements: R40
  • Hazard Symbols: Xn: Harmful;
  • HS Code: 29322980
  • EINECS: 204-729-7
  • Molecular Weight: 430.5354
  • InchiKey: LDKDGDIWEUUXSH-UHFFFAOYSA-N
  • InChI: InChI=1S/C28H30O4/c1-15(2)20-13-23(17(5)11-25(20)29)28(22-10-8-7-9-19
    (22)27(31)32-28)24-14-21(16(3)4)26(30)12-18(24)6/h7-16,29-30H,1-6H3
  • Risk Statements: S36/37
  • Molecular Formula: C28H30O4
  • Molecular Structure:CAS No:125-20-2 3,3-bis(4-hydroxy-2-methyl-5-propan-2-ylphenyl)-2-benzofuran-1-one

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  • Thymolphthalein CAS NO.: 125-20-2 Molecular formula: C28H30O4 Molecular weight: 430.54 Property : White or yellowish crystalline powder. soluble in ethanol or diluted basic hydroxide solution, Insoluble in water. Use: acid-base indicator, chromatic s...
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References of 3,3-bis(4-hydroxy-2-methyl-5-propan-2-ylphenyl)-2-benzofuran-1-one
Title: Thymolphthalein
CAS Registry Number: 125-20-2
CAS Name: 3,3-Bis[4-hydroxy-2-methyl-5-(1-methylethyl)phenyl]-1(3H)-isobenzofuranone
Synonyms: 5￠,5￠￠-diisopropyl-2￠,2￠￠-dimethylphenolphthalein
Molecular Formula: C28H30O4
Molecular Weight: 430.54
Percent Composition: C 78.11%, H 7.02%, O 14.86%
Literature References: Obtained by heating phthalic anhydride with thymol at 110° in the presence of stannic chloride.
Properties: Needles, mp ~253°. Insol in water; sol in alcohol, acetone; also sol in dil alkalies with a blue color, in H2SO4 with a carmine-red color.
Melting point: mp ~253°
Use: As pH indicator: colorless 9.3 to blue 10.5. Also as reagent for blood after decolorizing the alkaline soln by boiling with zinc dust.