CO2 PC
CO2E-US lb/hr (PPC) 14523.2 0.025
CO2E-US lb/hr (PC) 9990.2 13.4
  Propylene Carbonate (PC) Poly(propylene) Carbonate (PPC)
Net carbon fee/tax, $/hr - 6.7 -9.4
Net carbon fee/Unit mass of product, $/lb - 2.891´10-4 - 3.110´10-4
Net carbon fee/Unit mass of PPC+PC, $/lb   - 2.940´10-4
Table 5: Global warming potential indicators [44].