Qhov kub ntawm qhov pib-ignition ntawm cov khoom no yog 30 ° C, thiab nws muaj nyob rau hauv lub xeev gaseous. Nws qhov hnyav molecular yog 33.997 thiab 58 g/mol.
Cov khoom no tsis muaj xim thiab muaj ib qho txawv tsw zoo li mustard thiab qej, thaum muaj variants feem ntau emit ib tug ntxhiab akin rau rotten ntses.