If I understand your question right, you just need a quick confirmation of identity, not a full analysis. In that case I'd suggest to determine the density of the solution (MSDS from Sigma: 1,270 g/cm3) and take a IR-spectrum (for reference spectrum see: http://sdbs.db.aist.go.jp/sdbs/cgi-bin/cre_index.cgi), eventually the refractive index as well (also MSDS from Sigma: n20/D 1.409).