Hazcom vs. Hazmat vs. Hazardous Waste What Is The Difference????? AT LAST REPORT there were 213,000 chemicals and chemical compounds being used in this country. And each year thousands of new chemical compounds are produced and become part of our lives at home and at work. Nearly 1.5 billion tons of hazardous materials are transported annually in the U.S., over the road or by rail, aircraft or vessel. A lot of these products improve our lives, but many are harmful to our health and to the environment. The trouble is, these substances become so common to us, we are in danger of...