A new class of ionic liquids based upon 1-amino-3-alkyl-1,2,3-triazolium nitrates (alkyl = methyl, ethyl, n-propyl, 2-propenyl, and n-butyl) have been synthesized and characterized by vibrational spectra, multinuclear NMR, elemental analysis, and DSC studies. A single crystal x-ray study was carried out for 1-amino-3-methyl-1,2,3triazolium nitrate and the details will be presented.