Related by context. Frequent words. (Click for all words.) 58 Gamma rays 58 fluorocarbons 57 aromatic hydrocarbons 57 oxidizers 56 Hexavalent chromium 55 peroxides 55 chlorinated solvents 55 corrosive fluids 55 methane ethane 54 perchlorates 54 methane CH4 54 hydroxyl radicals 54 Nitrogen oxides 53 potent greenhouse gas 53 reactive molecules 53 oxidising 53 oxidiser 52 Hydrogen sulfide 52 nitrogenous 52 alkalis 52 Volatile organic compounds 52 ionised 52 polyethylene polypropylene 52 respiratory irritant 52 chemicals 52 inorganic compounds 52 halogenated 52 TFN NEWS BRIEFING Pharmaceuticals 51 polybrominated diphenyl ethers 51 specialty waxes 51 oxidizing agent 51 Hydrazine 51 ignitable 51 Sulphur dioxide 51 ethanol methanol 51 mercury cadmium 51 metal hydrides 51 phosphine 50 propellants 50 mutagens 50 absorbs carbon dioxide 50 purines 50 dimethyl 50 colorless odorless tasteless 50 colorless liquid 50 pyroxene 50 glycols 50 americium 50 carcinogenic compounds 50 polymers plastics 50 benzene toluene 50 oxidants 50 PCBs polychlorinated biphenyls 50 UV irradiation 49 alkanes 49 Sulfuric acid 49 trichloroethene 49 petrochemical feedstocks 49 Kuan Yin Taiwan 49 azide 49 oxidise 49 Toxic chemicals 49 polyurethane foams 49 naturally occurring substance 49 biogenic 49 noble gases 49 carcinogenic substance 49 potassium magnesium 49 toxic byproducts 49 hydrides 49 H#O# 49 inorganic mercury 49 microscopic bugs 49 Burning fossil fuels 49 hydrochloric 49 herbicides pesticides 49 pyrethrins 49 potent neurotoxin 49 sludges 49 pentachlorophenol 49 suspected carcinogen 49 Tannins 49 chemically inert 48 corrosives 48 paints adhesives 48 plasticisers 48 terpenes 48 combustible gases 48 glycol ethers 48 Ultraviolet light 48 polycyclic aromatic hydrocarbons 48 radioactive byproducts 48 carbon tetrachloride 48 castor bean plant 48 naturally occurring mineral 48 cesium formate drilling 48 photosynthetic bacteria 48 oxidant 48 particles emitted 48 neurotoxins 48 naturally occurring substances