Solid, liquid, or gaseous substances which because of their source or measurable characteristics, are classified under state or federal law as potentially dangerous and are subject to special handling, shipping, and disposal requirements.
Important Notice: Limited Web Access Dec 16 to 18, 2016
AIChE will undertake a routine upgrade of our digital infrastructure over the weekend of December 16-18, 2016. During this period access to certain areas of the website will be limited. Learn more about how access will be affected.