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Home/Compounds/Dye & Pigment/O-cresolphthalein
C22H18O4
346.4 g/mol
Dye & Pigment

O-Cresolphthalein

CAS596-27-0EC209-881-8
Category
Dye & Pigment
Compound Class
Other
Primary Use
pH indicator for titrations

o-Cresolphthalein is a phthalein dye used as a pH indicator in titrations. It is insoluble in water but soluble in ethanol, and its solution changes from colorless to purple over the pH range of 8.

pH indicator for titrations

Content scope: Information here supports chemical identification and industrial supply, research, and manufacturing contexts. It is not a therapeutic claim, medical advice, or drug-use instructions.

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Related Compounds

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Referencesame scaffold

Phenolphthaleina

CAS77-09-8

pharmaceutical raw material

Referencesame scaffold

Thymolphthalein

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pH indicator dye

Identifiers
IUPAC Name

3,3-bis(4-hydroxy-3-methylphenyl)-2-benzofuran-1-one

InChIKey

CPBJMKMKNCRKQB-UHFFFAOYSA-N

SMILES

CC1=C(C=CC(=C1)C2(C3=CC=CC=C3C(=O)O2)C4=CC(=C(C=C4)O)C)O

Synonyms (20)
  • 3,3'-Dimethylphenolphthalein
  • 93% +(HPLC)(contains <10%H2O)
  • CRESOLPHTHALEIN, O-
  • Cresolphthalein
  • ORTHO-CRESOLPHTHALEIN
  • o-Cresolphthalein