CHES, ULTROL® Grade 2-(N-Cyclohexylamino)ethanesulfonic Acid A zwitterionic buffer that is useful in the pH 8.6-10.0 range. Has a pKa of 9.15 at 25°C. Absorbance (1.0 M, 260 nm):≤0.15. 产品信息 Form White solid Molar mass 207.3 Purity ≥99% by titration Heavy metals ≤1 ppm PKA 9.3 at 25°C Solubility H2O CAS number 103-47-9 商店和运输信息 Storage +15°C to +30°C Ship Ambient Temperature Only Standard Handling