Agent Name

alpha-Naphtholphthalein

CAS Number

596-01-0

Formula

C28-H18-O4

Major Category

Dyes

Synonyms

3,3-Bis(4-hydroxy-1-naphthyl)phthalide; [ChemIDplus] 3,3-Bis(4-hydroxynaphthalenyl)-1(3H)-isobenzofuranone; Di-p-alpha-naphtholphthalide; p-alpha-Naphtholphthalein; [Merck Index]

Category

Indicator Dyes

Description

Colorless solid when pure; Usually greyish-red; [Merck Index] Grey to brown solid; [Acros Organics MSDS]

Sources/Uses

Used as an indicator; [Merck Index]

Comments

May cause irritation; [Acros Organics MSDS]

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