Eosin Y (yellowish), Gurr™ for microscopical staining

Supplier: VWR Chemicals
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Synonyms: Tetrabromofluorescein disodium saltEosin Y disodium saltEosin 2252′,4′,5′,7′-Tetrabromofluorescein disodium saltSolvent Red 43Disodium 2-(2,4,5,7-tetrabromo-6-oxido-3-oxoxanthen-9-yl)benzoateDisodium 2',4',5',7'-tetrabromo-3-oxo-3H-spiro[isobenzofuran-1,9'-xanthene]-3',6'-bis(olate)Field's Stain B2,4,5,7-Tetrabromofluorescein disodium salt

341972QEA 138 GBP
341972Q 341975T 341973R
Eosin Y (yellowish), Gurr™ for microscopical staining
Eosin Y (yellowish)
Formula: C₂₀H₆Br₄Na₂O₅
MW: 691.86 g/mol
MDL Number: MFCD00005040
CAS Number: 17372-87-1
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Specification Test Results

Dye content (gravimetrically) Min. 85 %
Identity (UV/VIS-Spectrum) Passes test
Absorption maximum λmax. (Water) 515 --> 518 nm
Spec.Absorptivity (λm; 0.005 g/l; water) 1200 --> 1400
TLC-Test Passes test
Loss on drying (110°C) Max. 8 %
Suitability for microscopy Passes test

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