CAS No 548-24-3 , Eosin B Search by region : Germany

Name: Eosin B
Synonyms: Eosin B; Eosin Bluish;,5'-Dibromo-2',7'-dinitrofluorescein, disodium salt; C.I. 45400; C.I. Acid Red 91; Eosin B, high purity biological stain; Spiro[isobenzofuran-1(3H),9'-[9H]xanthen]-3-one, 4',5'-dibromo-3',6'-dihydroxy-2',7'-dinitro-, disodium salt; Acid Red 91;
CAS Registry Number:548-24-3
Transport: 25kgs
Density: g/cm³
Water Solubility: soluble
Safety Statements: S22S24/25
Hazard Symbols: Not regulated UN NO.
EINECS: 208-943-1
Molecular Weight: 624.06294
InChI: InChI=1/C20H8Br2N2O9.2Na/c21-13-15(25)11(23(28)29)5-9-17(13)32-18-10(6-12(24(30)31)16(26)14(18)22)20(9)8-4-2-1-3-7(8)19(27)33-20;;/h1-6,25-26H;;/q;2*+1/p-2
Risk Statements: 22
Molecular Formula: C20H6Br2N2Na2O9
Molecular Structure:

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References of Eosin B

Title: Eosine I Bluish
CAS Registry Number: 548-24-3
CAS Name: 4￠,5￠-Dibromo-3￠,6￠-dihydroxy-2￠,7￠-dinitrospiro[isobenzofuran-1(3H),9￠-[9H]xanthen]-3-one disodium salt
Synonyms: 4￠,5￠-dibromo-2￠,7￠-dinitrofluorescein disodium salt; hydroxydibromodinitro-o-carboxyphenylfluorone sodium; C.I. Acid Red 91; C.I. 45400
Molecular Formula: C20H6Br2N2Na2O9
Molecular Weight: 624.06
Percent Composition: C 38.49%, H 0.97%, Br 25.61%, N 4.49%, Na 7.37%, O 23.07%
Literature References: Prepd by nitration of 4￠,5￠-dibromofluorescein: Colour Index vol. 4 (3rd ed., 1971) p 4427.
Properties: Red powder. Freely sol in water with green fluorescence; sol in alc.
Use: Dyeing wool, cotton, and paper. In histology as a stain for epithelia, muscular fibers, nuclei, etc.