Perform Tier 1 environmental performance by comparing two routes to manufacture toluene diisocyanate (TDI). Detail of both processes in table 1. Route 1: Amine-phosgene process: CH3(CH3)NH2)2 + 2COCL2 C&H3(CH3)(-N=C=0)2 + 4HCL Route 2: carbonylation process: C6H3(CH3)(NO2)2 +6CO CH3(CH3)(-N=C=0)2 + 4CO2 Route 2: carbonylation process: C6H3(CH3)(NO2)2 +6CO CH3(CH3)(-N=C=O)2 + 4CO2 Solve the following: a) Compare the Environmental index (EI) based on PEL and toxicity data for both processes b) Determine which route is more economical. c) Propose strategy to improve the economic assessment, apart from that being used in part b) Table 1 Vi Cost PEL Inhalation Oral toxicity ($/1b) Compound (mg/m) toxicity factor factor Amine-phosgene process: Toluene diamine -0.76 0.576 0.1 NA NA chlorobenzene -0.01 0.550 350 100 100 Hydrochloric acid 0.40 0.027 100 100 phosgene -1.26 0.610 0.4 NA TDI 1.340 0.14 100,000 100 7 NA 1 1000 NA Carbonylation process: Dinitrotoluene 1.04 0.365 1.5 1000 Carbon monoxide 1.00 0.040 55 NA TDI 1.00 1.340 0.14 100,000 Carbon dioxide 1.00 9000 NA Vi = pounds produced or pound of material required per pound TDI 100 NA