4 ms·

We could ban halogens unless its impossible to substitute. PVC can be replaced with polyurethane or polyethylene. Hydrocarbon refrigerants instead of HCFCs or p

by coryrc 4y ago

We could ban halogens unless its impossible to substitute. PVC can be replaced with polyurethane or polyethylene. Hydrocarbon refrigerants instead of HCFCs or pentafluoroethane. If a tiny bit of teflon is needed for uranium enrichment, so be it.