Between 1961 and 1971 the US sprayed 77 million litres, 8800 tonnes, of Agent Orange over an area of 2.9 million ha in Vietnam.
It was a mix of 2-4-5-T and 2-4-D, which was further mixed 50/50 with kerosene or diesel fuel and dispersed by aircraft, vehicle or by hand spraying.
It contained the dioxin TCDD, which was present in an average two parts per million (ppm), but ranging up to 50 ppm. It means about 160 litres of dioxin was sprayed over Vietnam.
