intermediate definition an intermediate is a substance formed during a middle step of a chemical reaction between reactants and the desired product
The international pictogram for chemicals that are sensitising, mutagenic, carcinogenic or toxic to reproduction. A carcinogen is any substance, radionuclide, or radiation that is an agent directly involved in causing cancer. This may be due to the ability to damage the genome or to the disruption of cellular metabolic processes. Several radioactive substances are considered carcinogens, but their carcinogenic activity is attributed to the radiation, for example gamma rays and alpha particles, which they emit. Common examples of non-radioactive carcinogens are inhaled asbestos, certain dioxins, and tobacco smoke.
Substances, mixtures and exposure circumstances in this list have been classified by the International Agency for Research on Cancer (IARC) as Group 2B: The agent (mixture) is possibly carcinogenic to humans.The exposure circumstance entails exposures that are possibly carcinogenic to humans.This category is used for agents, mixtures and exposure circumstances for which there is limited evidence of carcinogenicity in humans and less than sufficient evidence of carcinogenicity in experimental animals. Agents Classified by the IARC Monographs, International Agency for Research on Cancer. 2  IARC Monographs-Classifications-by Group. 3  IARC Monographs on the Evaluation of Carcinogenic Risks to Humans, Volume 51: Coffee, Tea, Mate, Methylxanthines and Methylglyoxal.