Eosin B
Name: Eosin B
CAS Registry Number: 548-24-3
CA Index Name: Spiro[isobenzofuran-1(3H),9'-[9H] xanthen]-3-one, 4',5'-dibromo-3',6'-dihydroxy-2',7'-dinitro-, sodium salt (1:2)
Other Names: Fluorescein, 4',5'-dibromo-2',7'-dinitro-, disodium salt; Spiro[isobenzofuran-1(3H),9'-[9H]xan-then]-3-one, 4',5'-dibromo-3',6'-dihydroxy-2',7'-dinitro-, disodium salt; C.I. 45400; C.I. Acid Red 91; Dibromodi-nitrofluorescein sodium; Eosin B; Eosin BA; Eosine B; Eosine BA; Eosine BN; Eosine BNX; Eosine I Bluish; Saffrosine; Simacid Nitro Eosin 24669
Merck Index Number: 3602
Chemical / Dye Class: Xanthene
Molecular Formula: C20H6Br2N2Na2O9
Molecular Weight: 624.06
Physical Form: Red-brown to green crystals or powder
Solubility: Freely soluble in water; soluble in ethanol
Melting Point: 295 °C
Absorption (λmax): 514 nm, 395 nm
Emission (λmax): 544 nm
Synthesis: Synthetic method
Staining Applications: Brain; cells; microorganisms; nucleic acids; peptides; proteins; enzyme substrates; hairs
Biological Applications: Antimalarial agent; protein assay; detecting enzyme activity; treating cancer, malaria, diabetes, a variety of conditions affecting skin, mouth, digestive tract, urinary tract, reproductive tract, respiratory tract, circulatory system, head, neck, endocrine system, lymphoreticular system; dental materials
Industrial Applications: Color filters; liquid crystal displays; inks; NLO materials; photographic materials; laundry detergent; textiles
Safety / Toxicity: No data available
Certification / Approval: Certified by Biological Stain Commission (BSC)
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