Agent Name

o-Cresolphthalein

CAS Number

596-27-0

Formula

C22-H18-O4

Major Category

Dyes

Synonyms

Cresolphthalein; 3',3''-Dimethylphenolphthalein; 1(3H)-Isobenzofuranone, 3,3-bis(4-hydroxy-3-methylphenyl)-; 3,3-Bis(4-hydroxy-m-tolyl)phthalide; Phenolphthalein, 3',3''-dimethyl-; [ChemIDplus] 3,3-Bis(4-hydroxy-3-methylphenyl)-1(3H)-isobenzofuranone; [Merck Index]

Category

Indicator Dyes

Description

Solid; [Merck Index] Off-white powder; [Alfa Aesar MSDS]

Sources/Uses

Used as an indicator and analytical reagent; [Merck Index]

Comments

Intravenous LD50 (mouse) = 320 mg/kg; [RTECS] May cause irritation; [Alfa Aesar MSDS]

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