Eosin Y (yellowish), pure indicator grade

Supplier: Thermo Scientific
Warning

Synonyms: Solvent Red 43, Field's Stain B, Eosin 225, 2,4,5,7-Tetrabromofluorescein disodium salt, Disodium 2-(2,4,5,7-tetrabromo-6-oxido-3-oxoxanthen-9-yl)benzoate, Disodium 2',4',5',7'-tetrabromo-3-oxo-3H-spiro[isobenzofuran-1,9'-xanthene]-3',6'-bis(olate), Tetrabromofluorescein disodium salt, 2′,4′,5′,7′-Tetrabromofluorescein disodium salt, Eosin Y disodium salt

201930250 201931000 201932500
ACRO201930250EA 34.4 EUR
ACRO201930250 ACRO201931000 ACRO201932500
Eosin Y (yellowish), pure indicator grade
Eosin Y (yellowish)
Formula: C₂₀H₆Br₄Na₂O₅
MW: 691,86 g/mol
Melting Pt: >300 °C (dec.)
Density: 1,018 g/cm³
Storage Temperature: Ambient
MDL Number: MFCD00005040
CAS Number: 17372-87-1
EINECS: 241-409-6
Merck Index: 13,03634

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Specification Test Results

Appearance Dark red-brown Crystalline powder
Infrared spectrum Conforms
UV spectrum Complies
Loss on drying ≤10 %
UV Lambda max 511 to 519 nm
Specific extinction E (1%/1cm) ≥1100 (lambda max, 0.001M Na2CO3) on dried substance

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