CAPS, ULTROL® Grade 3-(Cyclohexylamino)propanesulfonic Acid A zwitterionic buffer that is useful in the pH 7.9-11.1 range. Has a pKa of 10.40 at 25°C. Absorbance (100 mM, 260 nm):≤0.05. 产品信息 Form White solid Molar mass 221.3 Purity ≥99% by titration Heavy metals ≤1 ppm PKA 10.4 at 20°C Solubility H2O Chemical formula C9H19NO3S RTECS TZ6395000 CAS number 1135-40-6 Merck USA index 14, 1767 商店和运输信息 Storage +15°C to +30°C Ship Ambient Temperature Only Standard Handling