Under the Government of Canada’s Chemicals Management Plan, which was announced in December 2006, TCEP (Chemical Abstracts Service No. 115-96-8) was identified as a high priority substance for assessment because it was considered to pose an intermediate potential for exposure to individuals in Canada and to be a substance that causes concern for humans owing to possible carcinogenic effects. The European Chemicals Bureau has classified TCEP as a Category 3 carcinogen, which is a substance that causes concern for humans owing to possible carcinogenic effects, and as a Category 2 reproductive toxicant, as it may impair fertility