Certified values1,4-Dichlorobenzene350 μg/kg Dimethyl phthalate 3130 μg/kg Hexachlorobutadiene .2010 μg/kg 2,4-Dinitrophenol. 1600 μg/kg Nitrobenzene4670 μg/kg 2,6-Dinitrotoluene (2,6-DNT). 2510 μg/kg1,2,4-Trichlorobenzene 698 μg/kg Di-n-octyl phthalate