toyota has issued a mandate from their service parts group that no vci paper or film containing nitrite will be allowed due to any health or physical hazards associated with their products or packaging.cortec®, the global leader in environmentally friendly vpci® and mci® corrosion protection, is the only company in the automotive industry to offer nitrite free vci vpci®146 paper that complies with various international, federal, and state regulatory requirements.this high technology vapor phase corrosion inhibiting paper, once again places cortec® ahead of the competition.