BIS-Tris Propane, ULTROL® Grade A non-zwitterionic buffer that is useful in the pH 6.3-9.5 range. Has pKas of 6.8 (pKa1) and 9.0 (pKa2). Absorbance (1.0 M, H2O, 260 nm): <0.08. 产品信息 Form White solid Molar mass 282.4 Purity >98% by titration Heavy metals <1 ppm PKA 6.8 at 20°C Solubility H2O Chemical formula C11H26N2O6 CAS number 64431-96-5 商店和运输信息 Storage +15°C to +30°C Ship Ambient Temperature Only Standard Handling