Related by context. Frequent words. (Click for all words.) 71 refrigerant 63 ozone depleting 61 CFCs 59 coolants 59 HCFC 57 solvents 57 Freon 57 HCFCs 57 freon 56 chlorofluorocarbons 56 ozone depleting substances 53 glycol 52 gases 51 plasticizers 50 purifiers 50 HFCs 49 fluorine 49 harmful gases 49 propylene glycol 49 VOCs 49 biodegradability 48 ozone depletion 48 water heaters 48 refrigeration 47 plastic resins 47 ethylene oxide 47 ozone layer 47 chemicals 47 PET bottles 47 hazardous wastes 46 volatile organic compounds 46 harmful chemicals 46 resins 46 detergents 46 pyrolysis 46 surfactants 46 carbon dioxide CO2 46 perchlorethylene 46 CFLs 45 additives 45 gasses 45 CO2 45 propellants 45 silane 45 incandescent lamps 44 halogens 44 biocides 44 fluorescent bulbs 44 powder coatings 44 evaporative 44 bio degradable 44 plastics 44 hazardous substances 44 boilers 44 perc 44 organic solvents 44 sorbent 43 biodegradable plastics 43 fluorescent lamps 43 carbon dioxide 43 diesel particulate filter 43 VOC 43 hazardous chemicals 43 compressors 43 adhesives 43 sealants 43 CFL bulbs 43 sodium hypochlorite 43 compact fluorescent lamps 43 toxic gases 43 softener 43 flame retardants 43 cooking oils 43 exhaust emissions 43 polyvinyl chloride PVC 43 coolant 43 Greenhouse gases 43 lubricants 43 HVAC 42 air compressors 42 formic acid 42 selective catalytic reduction 42 compact fluorescent bulbs 42 AdBlue 42 laundry detergents 42 polyethylene terephthalate PET 42 polyvinyl chloride 42 chlorine dioxide 42 hexane 42 degreaser 42 air purifiers 42 polyols 42 biodegradable packaging 42 thermoplastics 42 methyl bromide 42 compact fluorescent lights 42 Additives 42 incandescent bulbs 42 acid batteries 42 acetylene 41 recycled plastics