N566 TRIETHANOLAMINE HCl Grade:REAGENT GRADE CAS Number: 637-39-8Synonym(s): 2,2′,2′′-Nitrilotriethanol hydrochloride, Tris(2-hydroxyethyl)amine hydrochloride Molecular Weight: 185.65Molecular Formula: (HOCH2CH2)3N.HCl Storage Condition: ROOM TEMPERATURE CodeSizePriceQuantity N566-100G N566-500G Triethanolamine HCl is a zwitterionic buffer with a pKa of 7.8 at 20º. It is useful in pH range 7.3-8.3.