Eosin Y
Name: Eosin Y
CAS Registry Number: 17372-87-1
CA Index Name: Spiro[isobenzofuran-1(3H),9'-[9H] xanthen]-3-one, 2',4',5',7'-tetrabromo-3',6'-dihydroxy-, sodium salt (1:2)
Other Names: Eosin Yellowish; Fluorescein, 2',4',5',7'-tetrabromo-, disodium salt; Spiro[isobenzofuran-1 (3H),9'-[9H]xanthen]-3-one, 2',4',5',7'-tetrabromo-3',6'-dihydroxy-, disodium salt; 11445 Red; 11731 Red; 1903 Yellow Pink; ABCO Eosin; Abbey Eosin; Acid Red 87; Acid Red 87-39014; Aizen Eosine; Aizen Eosine GH; Basacid Red 316; Bromo 4D; Bromo 4DC; Bromo 4DL; Bromo B; Bromo FL; Bromo JPS; Bromo TS; Bromo X 100; Bromo XX; Bromo acid; Bromoeosine; Bromofluor-esceic acid; Bromofluorescein; Bronze Bromo; C.I. 45380; C.I. Acid Red 87; Certiqual Eosine; Chugai Ink Red AM 5; Cogilor Orange 212.10; Conacid Red ML; D and C Red No. 22; D&C Red 22; D&C Red No. 22; D&C Red No. 22-90133; Daiwa Red 103WB; Dawn red; Dinacid Eosine Red; Disodium eosin; Dycosweak Acid Red A; Eosin; Eosin A; Eosin OJ; Eosin Y; Eosin Y 17255; Eosin YS; Eosin yellow; Eosine; Eosine 3G; Eosine 3Y; Eosine A; Eosine AG; Eosine BPC; Eosine BS; Eosine BS-SF; Eosine DA; Eosine DWC 73; Eosine Extra Conc. A. Export; Eosine Extra Yellowish; Eosine FA; Eosine G; Eosine GF; Eosine GH; Eosine J; Eosine K; Eosine K Salt Free; Eosine Lake Red Y; Eosine OJ; Eosine S; Eosine S 13; Eosine SSO; Eosine Salt Free; Eosine Y; Eosine Y 90133; Eosine YB; Eosine YS; Eosine Yellow; Eosine Yellowish; Eosine sodium; Eosine sodium salt; Eosine w/ s; Eosine water-soluble; Fenazo Eosine XG; Food Red 103; Hidacid Boiling Bromo; Hidacid Bromo acid regular; Hidacid Dibromo Fluorescein; Hidacid Eosine Soda Salt; Hidacid White Bromo; Irgalite Bronze Red CL; Japan Red 103; Japan Red 230-1; Japan Red 230-2; Japan Red No. 103; Japan Red No. 230-1; Morning red; Neelicol Eosine; Orient Water Red 2; Orient Watger Red 2; Phlox Red Toner X 1354; Phloxine Red 20-7600; Phloxine Toner B; Pure Eosine YY; Red 103; Red 17255; Red No. 103; Red No. 230-1; Silk Discharge Orange 3R; Simacid Eosine Y; Sodium eosin; Sodium eosinate; Sodium eosine; Spiro [isobenzofuran-1(3H),9'-[9H]xanthen]-3-one, 2',4',5',7'-tetrabromo-3',6'-dihydroxy-, disodium salt; Symuler Eo-sin Toner; Tetrabromofluorescein; Tetrabromofluorescein D; Tetrabromofluorescein S; Tetrabromofluorescein soluble; Toyo Eosine G; Triacid Eosine; Vicoacid Eosine; Water Red 2
Merck Index Number: 3603
Chemical / Dye Class: Xanthene
Molecular Formula: C20H6Br4Na2O5
Molecular Weight: 691.85
Physical Form: Red-brown crystals or powder
Solubility: Freely soluble in water; slightly soluble in ethanol, methanol; insoluble in ether
Melting Point: 295.5 °C
pH Range: 0.0-3.0
Color Change at pH: Non-fluorescence (0.0) to green fluorescence (3.0)
pKa: 2.9, 4.5
Absorption (λmax): 517 nm
Emission (λmax): 538 nm
Synthesis: Synthetic methods
Staining Applications: Blood; blood smears; bone marrow; cells; nucleus; cytoplasm; membrane; candies; drinks; keloid; orthodontic adhesives; proteins; tissues; thrombocytes; eye lens; eye shadow; lips; skin; hairs; keratin fibers
Biological Applications: Treating age-related macular degeneration, burns, cancer, diabetes, obesity, dental bone defects, gastroesophageal reflux disease, prostate cancer, viral diseases; stents; wound-healing materials
Industrial Applications: Solar cell; semiconductor devices; color filters; Light-emitting devices; photovoltaic devices; electrochromic devices; thin films; sol-gel materials; inks; colored bubbles
Safety / Toxicity: Acute toxicity; carcinogenicity; cardiotoxicity; ecotoxicity; environmental toxicity; microbial toxicity; mutagenicity; neurotoxicity; nucleic acid damage; phototoxicity; pulmonary toxicity; reproductive toxicity; skin toxicity
Certification / Approval: Certified by Biological Stain Commission (BSC)
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