Carcinogens are materials that can cause cancer in humans or
animals. Several agencies including OSHA, NIOSH, and IARC are
responsible for identifying carcinogens. There are very few
chemicals known to cause cancer in humans, but there are many
suspected carcinogens and many substances with properties
similar to known carcinogens. Examples of known carcinogens
include the following: - Tobacco smoke - Chromium, hexavalent
Zero exposure should be the goal when working with known or
suspected carcinogens.