Toluene Diisocyanate (TDI) and Dioctyladipate (DOA) are the two important liquid ingredients for formulation of Solid Propellant. The former is used as curative and the latter as plasticizer for processability in propellant manufacturing. Toluene Diisocyanate is procured in 250 kg drums for solid propellant plant’s regular activity. Then it is transferred from Drum to small container fitted with valve for batching by nitrogen pressure pumping system. After process utilization, these containers need proper cleaning for further use. For this Dioctyl adipate being ester, inactive towards TDI and is used to clean the containers. The resultant mixture which contains both TDI and DOA comes under Hazardous Waste due to the presence of considerable amount of TDI. In order to dispose the mixture, a common treatment methodology is reviewed for the mixture before and after treatment with suitable eco-friendly decontaminant composed of 65 parts water, 25 parts rectified spirit, 5 parts ammonia (1:2) and 5 parts (10%) soap solution. FT-IR spectrophotometer, Single point Monitor meter was used for the study. The results are summarized in the article.
