ALIZARINE RED S AR

ALIZARINE RED S AR C.I.No. 58005 Acid base indicator use in analysis of metals Sodium Alizarine Sulphonate MSDS DE EN FR KO PT ES TH TR COAs Packings 25 g (00025) 100 g (00100) Print friendly version Article No. 00861 Grade AR Purity CAS No. 130-22-3 Molecular Formula C 1 4 H 7 NaO 7 S Molecular Weight 342.3 H.S. Code 2914.7990 Shelf Life 60 Months Physical Properties Physical state at 20 °C Solid Colour Red powder Melting point/ Freezing point [°C] 430°C Boiling point [°C] 287 - 289°C Initial boiling point [°C] 287°C Final boiling point [°C] 289°C Solubility in water [% weight] Sparingly soluble in water Specifications Appearance Yellow to orange to brown powder Dye content Min 70.0% Transition range pH 4.3-6.3 Yellow-Pink pH 9.4-12.0 Brown orange-Violet Solubility (0.1% in water) Clear solution Absorption maxima (0.1 mol/L in NaOH) λmax1 553-559 nm Absorption maxima (0.1 mol/L in NaOH) λmax2 592-599 nm Absorptivity (A1%/1cm at 556 nm ) Min 350.0 Absorptivity (A1%/1cm at 595 nm ) Min 325.0 Loss on drying (at 110°C) Max 5.0% Safety Information and Hazard Symbols Symbol: GHS07 Signal Word: Warning Hazardous Statement: H315-H319-H335 Precaution Statement: P261-P302+P352-P305+P351+P338 Revision Date: 04-Aug-2023 Home Lab Chemicals Adsorption Indicators ALIZARINE RED S