Dinitrotoluene, commonly known as DNT, exists as a mixture of two or more of its six isomers (forms).  The 2,4- and 2,6- DNT isomers are the most predominant and have been used in military munitions and dye manufacture. 

            Technical grade DNT is a mixture composed of approximately 76% 2,4-DNT, 19% 2,6-DNT, and 5% other DNT isomers (3,4-DNT, 2,3-DNT, 2,5-DNT, and 3,5 DNT).  In groundwater and drinking water, however, these isomers can be found independently and in different ratios. 

            If you live near a facility that has DNT contamination, it is important that your groundwater and drinking water well be tested for all known isomers of DNT. 

            FACT SHEET (PDF) (GET ADOBE ACROBAT READER TO VIEW)