Qhov kub-ignition kub ntawm tej yam khoom no yog 30°C, thiab nws tshwm sim nyob rau hauv ib lub xeev gaseous. Nws molecular luj yog 33.997 Thiab 58 g/mol.
Tej yam khoom yog xim thiab muaj ib tug yus odor resembling mustard thiab garlic, Thaum industrial variants feem ntau emit ib tsw akin to rotten ntses.