SEDL / STP / STP891-EB / STP33591S

Physical/Chemical Properties of 2,3,7,8-Tetrachlorodibenzo-p-Dioxin

Schroy, JM
Fellow, senior research specialist, and chemist II, Monsanto Company, St. Louis, MO

Hileman, FD
Fellow, senior research specialist, and chemist II, Monsanto Company, St. Louis, MO

Cheng, SC
Fellow, senior research specialist, and chemist II, Monsanto Company, St. Louis, MO

Pages: 13    Published: Jan 1985

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Abstract

Limited and inaccurate physical property data for 2,3,7,8-tetrachlorodibenzo-p-dioxin (TCDD) have inhibited the development of good environmental transport and fate information for this material. Based on limited literature data and transport modelling techniques evaporation of 2,3,7,8-TCDD from the soil column was proposed as a major factor in its movement in the environment. Estimated physical properties data were used to focus field sampling and analytical work and to identify the key physical property parameters that required quantification. Initial predictions indicating soil column loss via evaporation have been confirmed, losses via evaporation have been confirmed, and a set of physical properties suitable for environmental transport modelling have been compiled.