Mid-90's action movie starring Billy Zane & Robert Downey Jr with Cary-Hiroyuki Tagawa as the bad guy. And of course the plot line involves toxic waste. Gotta love the accent RDJ went with!

Trailer: https://www.youtube.com/watch?v=r52eVfNwwzU

Great clip: https://www.youtube.com/watch?v=1_mQQLg5h_Y