Imidazole, 50 G, Rpi, Mfr#: I52000-50.0

pKa (25°C): 6.9-7.0pH range: 6.2-7.8Common Name: [Glyoxaline] [1,3-Diaza-2,4-cyclopentadiene]CAS Number: 288-32-4Molecular Weight: 68.1Chemical Formula: C3H4N2 Solubility: WaterStorage Temperature: Room TemperatureStorage Conditions: Room TemperatureAppearance: White to off white crystals Assay: 99.0 %Identification: Pass Test Insolubles: 0.1 %Loss on Drying: 0.5 %Melting Point: 87.0 to 91.0 oCOPTICAL @ 260 NM: 0.2 pH (5%, water) @25 oC: 9.5 to 10.5 Solubility (20%, water): Pass DNase: Not Detected Protease: Not Detected RNase: Not Detected BSE/TSE Free: BSE/TSE Free Country of Origin: Report Shipping Weight: 0.34 lbsShipping Dimensions: 3.50 x 3.75 x 3.50Research or further manufacturing use only, not for food or drug use.