Agent Name

Eosin B

CAS Number

548-24-3

Formula

C20-H8-Br2-N2-O9.2Na

Major Category

Dyes

Synonyms

C.I. 45400; C.I. Acid Red 91; Dibromodinitrofluorescein sodium; Eosin BA; Eosine B; Eosine BA; Eosine BN; Eosine BNX; Eosine I Bluish; Saffrosine; 2-(4,5-Dibromo-3,6-dihydroxy-2,7-dinitroxanthen-9-yl)-benzoic acid, disodium salt; Spiro(isobenzofuran-1(3H),9'-(9H)xanthen)-3-one, 4',5'-dibromo-3',6'-dihydroxy-2',7'-dinitro-, disodium salt; Spiro(isobenzofuran-1(3H),9'-(9H)xanthen)-3-one, 4',5'-dibromo-3',6'-dihydroxy-2',7'-dinitro-, sodium salt (1:2); [ChemIDplus] 4',5'-Dibromo-3',6'-dihydroxy-2',7'-dinitrospiro[isobenzofuran-1(3H),9'-[9H]xanthen]-3-one disodium salt; 4',5'-Dibromo-2',7'-dinitrofluorescein disodium salt; Hydroxydibromodinitro-o-carboxyphenylfluorone sodium; [Merck Index] Eosin Scarlet; Acid Red 91; [Sigma-Aldrich MSDS]

Category

Di- and Triaryl Dyes

Description

Red solid; [Merck Index] Dark brown powder; [Sigma-Aldrich MSDS]

Sources/Uses

Used as a dye (wool, cotton, and paper) and histological stain; [Merck Index]

Comments

May cause irritation; [Sigma-Aldrich MSDS] See "Eosine Yellowish-(YS)" and "Rose Bengal."

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