Description Catalogue Number 115936 Synonyms Tetraiodofluorescein disodium salt Description ERYTHROSINE B (C.I. 45430) FOR MICROSCOP Overview Erythrosin B (C.I. 45430) is a CERTISTAIN® dry dye for microscopy that is often used as a counterstain, vizualising proteins, connective tissues, fibers and keratin in sample material of human origin. Depending on user requirements and personal preferences, it can be used for the preparation of the commonly used aqueous or alcoholic Erythrosin B staining solutions. As the dye belongs to the portfolio of Certistain® dyes, it is chemically analyzed according to strict specifications before release (CE marked and IVD product) and a high staining quality, with reliable staining results is guaranteed. Product Information CAS number 16423-68-0 EC number 240-474-8 Hill Formula C₂₀H₆I₄Na₂O₅ Molar Mass 879.84 g/mol HS Code 3204 12 00 Structure formula Image Applications Application Erythrosine B (C.I. 45430) for microscopy Certistain®. CAS 16423-68-0, pH 6 - 7 (10 g/l, H₂O, 20 °C). Physicochemical Information pH value 6 - 7 (10 g/l, H₂O, 20 °C) Bulk density 470 kg/m3 Solubility 100 g/l Toxicological Information LD 50 oral LD50 Rat 1840 mg/kg Safety Information according to GHS Hazard Pictogram(s) Hazard Statement(s) H302: Harmful if swallowed. RTECS LM5950000 Storage class 10 - 13 Other liquids and solids WGK WGK 2 water endangering Disposal 3 Relatively unreactive organic reagents should be collected in container A. If halogenated, they should be collected in container B. For solid residues use container C. Safety Information Hazard Symbols Harmful Categories of danger harmful R Phrase R 22 Harmful if swallowed. Storage and Shipping Information Storage Store at +5°C to +30°C. Specifications Dye content (gravimetrically) ≥ 80 % Identity - sodium passes test - UV/VIS-Spectrum passes test Absorption maximum λ max (water) 524 - 527 nm Spec. Absorptivity A 1%/1cm (λmax; 0.005 g/l; water) 930 - 1170 TLC-Test passes test Loss on drying (110 °C) ≤ 10 % Suitability for microscopy passes test
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