1.08122.0025 BROMOPHENOL BLUE MERCK

Description Catalogue Number 108122 Synonyms 3,3',5,5'-Tetrabromophenolsulfonphthalein, BPB Product Information CAS number 115-39-9 EC number 204-086-2 Grade ACS,Reag. Ph Eur Hill Formula C₁₉H₁₀Br₄O₅S Molar Mass 669.98 g/mol HS Code 2934 99 90 Structure formula Image Structure formula Image Quality Level MQ200 Physicochemical Information Melting Point 270 - 273 °C (decomposition) Bulk density 730 kg/m3 Safety Information according to GHS Storage class 10 - 13 Other liquids and solids WGK WGK 3 highly hazardous to water 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. Storage and Shipping Information Storage Store at +2°C to +30°C. Specifications Identity (UV/VIS-Spectrum) passes test Clarity of solution (1 g/l; ethanol) passes test Transition range pH 3.0 - pH 4.6 greenish yellow - blue violet Absorption maximum λ 1 max. (buffer pH 3.0) 434 - 439 nm Absorption maximum λ 2 max. (buffer pH 4.6) 590 - 593 nm Spec. Absorptivity A 1%/1cm (λ 1 max.; 0.005 g/l; buffer pH 3.0; calc. on dried substances) 350 - 400 Spec. Absorptivity A 1%/1cm (λ 2 max.; 0.005 g/l; buffer pH 4.6; calc. on dried substances) 940 - 1050 Loss on drying (110 °C) ≤ 2 % Transition range (according to ACS) passes test Sensitivity test passes test

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