What are the physical and chemical properties of 1-Ethyl-1,4-diazepane dihydrochloride (CAS: 1219843-83-0)?

1-Ethyl-1,4-diazepane dihydrochloride (CAS: 1219843-83-0) is a crystalline solid with a molecular weight of approximately 238.6 g/mol. It has a pKa of around 2.5, indicating it is a weak acid. The compound is soluble in common organic solvents such as ethanol and acetone but is only sparingly soluble in water. It is highly reactive, especially in acidic conditions, and can undergo ring-opening reactions with bases.