IUPAC Name: 2,3,7,8-tetrachlorodibenzo-p-dioxin

MCL: 0.00000003 ppm

Source: Produced from emissions of fossil fuels, waste incineration, and wood burning. Also may be formed in the production of organic compounds and paper.

Summary: TCDD is a member of the Dioxin compounds. They are well known for being persistent environmental contaminants and very toxic substances. TCDD exists as an emission product from fossil fuels, wood, and waste incineration. It may occur in chlorinated pesticides, and it accumulates in fat tissue in humans and mammals. It may also be formed in the synthesis of organic compounds. It is soluble in water up to 0.0002 mg/L at 25 C and has a density of 1.8 g/mL. It has a biological half-life in fish of 60.26 days, indicating that bioaccumulation is high. It is classified by the EPA has a Hazardous Air Pollutant (HAPs). Koc values indicate it will not be mobile within soil. Photolysis from soil and surface waters is expected to be a major fate process.

GHS Hazard Statement: H300, H310, H315, H319, H341, H350, H360, H370, H372, H400, H410, GHS06, GHS07, GHS08, GHS09