1.03025.0005 BROMECROSOL PURPLE MERCK

Description Catalogue Number 103025 Synonyms 5',5''-Dibromo-o-cresolsulfonphthalein Product Information CAS number 115-40-2 EC number 204-087-8 Grade ACS,Reag. Ph Eur Hill Formula C₂₁H₁₆Br₂O₅S Molar Mass 540.24 g/mol HS Code 2934 99 90 Structure formula Image Structure formula Image Quality Level MQ200 Physicochemical Information Melting Point 242 °C Bulk density 515 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 5.2 - pH 6.8 greenish yellow - blue violet Absorption maximum λ 1 max. (buffer pH 5.2) 429 - 433 nm Absorption maximum λ 2 max. (buffer pH 6.8) 587 - 590 nm Spec. Absorptivity A 1%/1cm (λ 1 max.; 0.005 g/l; buffer pH 5.2; calc. on dried substances) 400 - 470 Spec. Absorptivity A 1%/1cm (λ 2 max.; 0.005 g/l; buffer pH 6.8; calc. on dried substances) 1000 - 1160 Loss on drying (110 °C) ≤ 2 % Transition range (according to ACS) passes test Sensitivity test passes test

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