o-Cresolphthalein/3,3′-Dimethylphenolphthalein

English Name: o-cresolphthalein; 3,3′-Dimethylphenolphthalein； 3,3-Bis(4-hydroxy-3methylphenyl)-1-(3H)-isobenzofuranone

Other names: o-cresol furaphthalein; 2-methylphenolphthalein, 3,3 '- dimethylphenolphthalein; 3,3-bis (4-hydroxy-3-methylphenyl) - 1 (3H) - isobenzofuranone; O-toluene phenolphthalein; 3,3 '- dimethylphenolphthalein; O-cresol phthalide

CAS No.: 596-27-0

C22H18O4=346.38

Grade: ind

PH discoloration range: 8.2 (colorless) ～ 9.8 (red)

Infrared spectrum identification: match with the reference substance

Physicochemical Properties: white or yellow crystalline powder. Soluble in ethanol, ether and glacial acetic acid, soluble in dilute alkali solution, purple, slightly soluble in water, insoluble in benzene. Melting point 223 ℃. Maximum absorption wavelength 566 (381) NM

Purpose: biochemical research. Acid base indicator

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