ACES is a zwitterionic buffer used in biochemistry and molecular biology research. It is one of the Good buffers developed in the 1960's to provide buffers in the pH range of 6.15-8.35 for wide applicability to biochemical studies.CAS Number:7365-82-4Molecular Formula:C4H10N2O4SMolecular Weight:182.2Appearance:Supplied as a white to off-white powder Purity:≥99%Loss on Drying::≤1%pH (1% in H2O, 25°C):3.6-4.4Storage and Stability:May be stored at RT for short-term only. Long-term storage is recommended at RT. Stable for 6 months after receipt.Important Note:This product as supplied is intended for research use only, not for use in human, therapeutic or diagnostic applications without the expressed written authorization of United States Biological. Toxicity and Hazards:All products should be handled by qualified personnel only, trained in laboratory procedures.