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.