HEPES

Specifications: HEPES >99.5% Loss on Drying (105 C° 4hr) <,0.5% Water Content (By KF) <,0.5% Infrared Complies pH 1% in water 4.8-5.6 (25°C) Solubility 1M in water Clear and colourless solution Residue on ignition <,0.1% A260, 1M in water <,0.045 A280, 1M in water <,0.035 A420, 1M in water <,0.20 Heavy Metals <,5 ppm pKa at 20°C 7.35-7.69 Store dry at room temperature. Soluble in water. CAS 7365-45-9