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LC4188 Murexide (ammonium purpurate) metal indicator ACS,Reag. Ph Eur Order number Packaging Quantity Price AC31188 Glass bottle 5 g 21.38 AC31188 Glass bottle 25 g 73.35 Product information Grade ACS,Reag. Ph Eur Synonyms Ammonium purpurate, acid Hill Formula C8H8N6O6 HS Code 2933 54 00 EC number 221-266-6 Molar mass 284.19g/mol CAS number 3051-09-0 Chemical and physical data Solubility 1g/l (20C) Molar mass 284.19g/mol Bulk density 330kg/m3 pH value 5 (1g/l, H2O, 20C) Safety information Storage class 10 - 13 Other liquids and solids WGK WGK 3 highly water endangering Disposal 3Relatively unreactive organic reagents should be collected in container A. If halogenated, they should be collected in container B. For solid residues use container C. Specifications Identity IR-spectrum conforms Specific absorption(at 521nm; 1%; 1cm; water) 300 Sulfated ash 1.0% Loss on drying(105C) 2.0% Suitability as indicator conforms