Related by context. All words. (Click for frequent words.) 77 carcinogen 69 carcinogenic 69 carcinogens 62 probable carcinogen 61 potent carcinogen 60 suspected carcinogen 59 endocrine disruptor 58 probable carcinogens 58 tetrachloroethene 58 endocrine disrupter 57 carcinogenicity 56 possibly carcinogenic 56 reproductive toxins 56 potentially carcinogenic 56 heptachlor 56 hormone disruptor 55 bioaccumulative 55 neurotoxin 54 endocrine disrupting chemical 54 cancer causers 54 reproductive toxicants 54 Vinyl chloride 54 genotoxic 54 Acrylamide 53 Hexavalent chromium 53 contaminant 53 Chromium VI 53 polybrominated 53 dioxane 53 aromatic amines 52 Triclosan 52 persistent bio accumulative 52 TCE trichlorethylene 52 cancer causer 52 2 butoxyethanol 52 polybrominated diphenyl ethers PBDEs 52 benzo pyrene 52 reproductive toxicity 52 potent carcinogens 52 endocrine disruptors 52 Carbon monoxide CO 52 Carbon tetrachloride 52 mimics estrogen 52 hormone disrupting 52 polynuclear aromatic hydrocarbons 52 trichloroethane 52 Ionizing radiation 52 polycyclic aromatic hydrocarbons 52 Chrysotile asbestos 52 PCBs polychlorinated biphenyls 51 toxicants 51 hormone disruptors 51 carcinogenic substance 51 hormone disrupters 51 perfluorinated chemicals 51 hormone disrupter 51 TBBPA 51 carbon tetrachloride 51 Polybrominated 51 hormonally active 51 PBDEs polybrominated diphenyl ethers 51 nonylphenol ethoxylates 51 deicing fluids propylene glycol 51 endrin 51 Brominated flame retardants 51 polybrominated diphenyl ethers 51 arsenic benzene 50 dichlorodiphenyltrichloroethane 50 Toxicology Program 50 carcinogenic byproducts 50 dioxins 50 lung irritant 50 formaldehyde benzene 50 neurotoxic effects 50 benzene arsenic 50 #,# dichloroethane 50 perfluorinated compounds 50 #,# dioxane 50 teratogens 50 respiratory irritant 50 Aminopterin 50 DINP 50 polyaromatic hydrocarbons 50 PFOA 50 colorless odorless tasteless 50 chlorinated compounds 50 phthalates 50 #,# butadiene 50 acid PFOA 50 benzophenone 50 pthalates 50 benzene toluene xylene 50 Carcinogen 50 Carcinogenic 50 methylparaben 49 chlorinated hydrocarbon 49 benzene carcinogen 49 polybrominated biphenyls 49 dioxins furans 49 toxic pollutant 49 naturally occurring substance 49 Oxybenzone 49 #,# dichlorobenzene 49 tetrachlorethylene 49 deca BDE 49 Cancer IARC 49 toxins 49 respiratory tract irritation 49 Ethylene glycol 49 carcinogenic polycyclic aromatic hydrocarbons 49 organochlorine 49 carcinogens mutagens 49 methyl chloride 49 toxicity 49 PBDE 49 toxaphene 49 toxic substances 49 dimethyl 49 nonylphenol 49 Ionising radiation 49 PFOS 49 Tetrachloroethylene 49 vinyl chloride 49 triclocarban 49 reproductive toxicant 49 polybrominated diphenyl ether 48 organochlorines 48 PFBA 48 glycol ethers 48 Flame retardants 48 endocrine disrupting 48 PAHs polycyclic aromatic hydrocarbons 48 plastic hardener 48 decaBDE 48 organochlorine pesticide 48 endocrine disrupters 48 toxic flame retardants 48 dichloroethene 48 PCBs dioxins 48 estrogen mimicking 48 paraben 48 amphibole asbestos 48 toxicant 48 furans 48 Parabens 48 endocrine disrupting chemicals 48 indoor radon 48 Dioxins 48 Formaldehyde 48 trichloroethene 48 Hydrogen sulfide 48 plastics detergents 48 nonstick substance 48 PCBs DDT 48 teratogen 48 Phthalate 48 contrast chlorine disinfection 48 benzene 48 PFOAs 48 Brominated 48 parathion 48 dioxins PCBs 48 trichloroethene TCE 48 organochlorine insecticides 48 Methyl mercury 48 halogenated 48 carcinogenic mutagenic 47 sumithrin 47 penta BDE 47 endocrine disruption 47 harmful chemicals 47 xylene 47 endocrine disrupting chemicals EDCs 47 pollutant 47 ammonium perfluorooctanoate 47 DEHA 47 biphenyls 47 polycyclic aromatic hydrocarbons PAHs 47 Secondhand smoke contains 47 harmful substances 47 DDT dieldrin 47 acute toxicity 47 THMs 47 potent neurotoxin 47 polycarbonate bottles contain 47 ochratoxin 47 odorless colorless tasteless 47 Inert ingredients 47 asbestosis lung cancer 47 HBCD 47 perfluorooctanoic acid PFOA 47 polychlorinated biphenyls PCBs 47 phthalates DEHP 47 lindane 47 hexavalent chromium polybrominated biphenyls 47 estrogenic compounds 47 crocidolite 47 teratogenic effects 47 dental amalgam fillings 47 Volatile Organic Compounds 47 PBDEs 47 flame retardants PBDEs 47 hazardous substances 47 butter flavorings 47 organophosphate pesticide 47 benzothiazole 47 brominated flame retardant 47 cyclamates 47 toxic chemicals 47 chemical perfluorooctanoic acid 47 persistent bioaccumulative 47 #,#,# tribromoanisole 47 Acrolein 47 pesticide aldicarb 47 cadmium chromium 47 perchlorethylene 47 PDBEs 47 polybrominated diphenyl ether PBDE 47 furan 47 arsenic chromium 47 toluene xylene 47 Lindane 47 benzene toluene 47 Benzo pyrene 47 pentachlorophenol 47 toxic solvent perchlorethylene 47 Food Additives JECFA 47 developmental neurotoxicity 47 phenoxyethanol 46 dental amalgams 46 mercury dioxins 46 perchlorethylene toxic 46 chlorinated pesticides 46 phthalate 46 naturally occurring asbestos 46 bio accumulative 46 organochlorine pesticides 46 carcinogenic chemicals 46 pesticides chlorpyrifos 46 Deca BDE 46 Polychlorinated biphenyls 46 perfluorooctane sulfonate PFOS 46 dibutyl phthalate DBP 46 mercury preservative 46 Methylmercury 46 Ethylene oxide 46 trace amounts 46 naturally occurring bacterium 46 oxybenzone 46 Perchloroethylene 46 toxin 46 tributyltin 46 colorless liquid 46 another Parkinson's triggering 46 Persistent Organic Pollutants 46 inorganic arsenic 46 triclosan 46 degreasing solvent 46 PAHs 46 safe GRAS 46 diphenyl ethers 46 para dichlorobenzene 46 tremolite 46 DEHP 46 acrolein 46 carbamates 46 Tetrodotoxin 46 chlordane 46 methyl tert butyl ether 46 benzene xylene 46 ozone depleting substance 46 flame retardant chemicals 46 thirdhand smoke 46 plutonium americium 46 hexavalent chromium 46 Study Tanning beds 46 bisphenol 46 carcinogenic compounds 46 hexachlorobenzene 46 Vinyl acetate 46 Nitrosamines 46 particulate matter nitrogen oxides 46 artificial sweetener saccharin 46 #,# Dioxane 46 sulfated chondroitin sulfate 46 Halogenated 46 Diacetyl 46 chlorinated hydrocarbons 46 Trichloroethylene 46 Dechlorane Plus 46 arsenic beryllium 45 chemicals 45 flammable corrosive 45 Carbofuran 45 Chlorpyrifos 45 perfluorinated compounds PFCs 45 radiological contaminants 45 Carcinogens 45 Air Pollutants 45 methylene glycol 45 silver dental fillings 45 piperonyl butoxide 45 trivalent chromium 45 superantigen 45 Bisphenol 45 diethyl 45 sodium lauryl sulfate 45 drywall emits 45 DDT PCBs 45 mirex 45 Sodium cyanide 45 isopropyl 45 Pyrethrins 45 azinphos methyl 45 thimerosol 45 semicarbazide 45 Phthalates 45 hepatotoxic 45 octa BDE 45 PFCAs 45 colorless flammable 45 estrogenic chemicals 45 neurotoxins 45 PBDE flame retardants 45 mercury cadmium 45 Perchlorate 45 biphenyls PCBs 45 nonhazardous 45 benzene toluene ethylbenzene 45 methanol formaldehyde 45 leach traces 45 dichloroethane 45 retinyl palmitate 45 ethylbenzene 45 carcinogen benzene 45 DEET N 45 Hydrochloric acid 45 pesticides aldrin 45 chlorobenzene 45 hydrogen sulphide H2S 45 Dioxane 45 #,# DCB 45 flame retardants 45 DDVP 45 #,#,# trichloroethane 45 Elemental mercury 45 metal degreasing 45 benzopyrene 45 neuro toxin 45 welding fumes 45 Phosgene 45 patulin 45 Qadr F1 45 pesticide chlorpyrifos 45 Soy isoflavones 45 formaldehyde carcinogen 45 lead mercury cadmium 45 ethylmercury 45 fibrous mineral 45 phthalate DEHP 45 Epoxy resins 45 Chloramines 45 chlorine byproducts 45 Sorbitol 45 hexavalent 45 tremolite asbestos 45 sulfonic acid 45 reproductive abnormalities 45 respiratory irritants 44 potent toxin 44 diphenyl ether 44 essential amino acid 44 polychlorinated biphenyl 44 Kepone 44 Chlorofluorocarbons 44 bisphenol A. 44 methyl chloroform 44 carcinogenic dioxins 44 perfluorooctanoic acid 44 radioactive isotopes chemotherapeutics cytokines 44 aromatic amine 44 sensitizers 44 polychlorinated 44 PCBs dioxin 44 diisocyanate 44 PVC plastics 44 dichloroethylene 44 neurotoxic 44 tetrachlorethylene PCE 44 diacetyl vapors 44 parabens 44 radiofrequency electromagnetic fields 44 stain repellents 44 chlordecone 44 singed squirrel tumbling 44 arsenic cadmium 44 insulating fluids 44 Toluene 44 utero exposure 44 nitrosamines 44 Benzene 44 Florverde farms 44 confirmed cancer causers 44 hex chrome 44 perfluorochemicals 44 brominated flame retardants 44 chemical perfluorooctanoic acid PFOA 44 phenanthrene 44 Propylene glycol 44 ethoxylates 44 prenatal exposures 44 BSE prions 44 PCBs pesticides 44 Sodium nitrite 44 chromium VI 44 trigger allergic reactions 44 barium cadmium 44 carcinogenic chemical 44 chlorinated solvents 44 teratogenic 44 polyester resins alkyd resins 44 chemical malachite green 44 anthrax ricin 44 amphibole 44 crystalline silica 44 contaminants 44 cadmium hexavalent chromium 44 organophosphates 44 OEHHA 44 Teflon cookware 44 acrylamide 44 benzoates 44 BPA phthalates 44 odorless tasteless 44 Corexit 44 nuclides 44 nitrosamine 44 meta toluamide 44 methylene chloride 44 Fecal coliform 44 azo dyes 44 naphthalene 44 diglycol 44 immunotoxicity 44 perfluorooctane sulfonate 44 odorless colorless gas 44 brominated flame 44 dibutyl phthalate 44 Methomyl 44 mimic estrogen 44 bacteria Clostridium botulinum 44 carbon disulfide 44 fluorotelomers 44 soft whitish 44 Dimethyl 44 degreasing agent 44 organotins 44 Polybrominated diphenyl ethers 44 Saccharin 43 methyl ethyl ketone 43 carbamate insecticides 43 tetrachloroethene PCE 43 2 ethylhexyl phthalate 43 Acetaldehyde 43 Inorganic arsenic 43 Heme iron 43 glycols 43 benzene formaldehyde 43 toxic solvents 43 Secondhand smoke 43 Chlordane 43 chlorinated Tris 43 vinyl lunchboxes 43 butylated 43 psychoactive chemical 43 dioxin PCBs 43 fragrances dyes 43 formaldehyde 43 chemicals diazinon malathion 43 stearic acid 43 inhalation hazard 43 methyl mercury 43 benzyl alcohol 43 ozone particulates 43 aerosol propellants 43 Adenoviruses usually cause 43 gastrointestinal tract lymph nodes 43 air toxics 43 Ultraviolet radiation 43 Safe GRAS 43 Sodium dichromate 43 endotoxins 43 carcinogenic substances 43 Methyl bromide 43 contain aflatoxin 43 BTEX 43 airborne asbestos fibers 43 synthetic preservatives 43 ethyl mesilate 43 solvents pesticides 43 phyto oestrogens 43 biphenyl 43 toluene benzene 43 butyl ether 43 tributyltin TBT 43 SVHCs 43 fungal toxin 43 Clostridium botulinum bacterium 43 powerful neurotoxin 43 naturally occurring mineral 43 Nitrogen oxide 43 colorless flammable liquid 43 halogenated compounds 43 propylene glycol 43 cadmium arsenic 43 p phenylenediamine 43 harden plastics 43 arsenic selenium 43 Artificial trans fats 43 contaminate groundwater 43 chemical diethylene glycol 43 xylenes 43 Naphthalene 43 lung cancer asbestosis 43 causative agent 43 toxic 43 bioaccumulate 43 pyrene 43 arsenic 43 phenolphthalein 43 dental amalgam 43 salmonella bacterium 43 Stachybotrys 43 hazardous 43 chemical bisphenol 43 allergens irritants 43 chromium 43 hazardous chemicals 43 hydrogen cyanide HCN 43 groundwater contaminant 43 Hydroxycut ingredients 43 RfD 43 chromated copper arsenate 43 Squalene 43 Generally Recognized 43 oceanic pollutants 43 americium 43 plasticiser 43 cetyl alcohol 43 Corexit #A 43 sulfuric acid caustic soda 43 potassium perchlorate 43 B. cepacia 43 Leukotrienes 43 organophosphate insecticide 43 acetaldehyde 43 microcystins 43 Methyl Tertiary Butyl Ether 43 Estrogenic 43 crystalline silica dust 43 bioaccumulation 43 colorless odorless poisonous 43 chlorinated flame retardants 43 brominated flame retardants BFRs 43 p DDE 43 BPA Bisphenol 43 benzene ethylbenzene 43 corrosive flammable 43 ACGIH 43 diazinon malathion 43 methylxanthines 43 chemical ammonium perfluorooctanoate 43 adulterant 43 synthetic musks 43 anticarcinogenic 43 #,#,#,# p 43 neuro developmental disorders 43 PCBs 43 tobacco specific nitrosamines 43 chromium cadmium 42 hydroperoxide 42 perfluoroalkyl acids 42 #,# butanediol 42 colorless odorless radioactive 42 TSNAs 42 Disease Registry ATSDR 42 harmful effects 42 Malachite green 42 Acrylic acid 42 nicotine metabolite 42 antimony trioxide 42 toluene diisocyanate 42 hydrocarbons carbon monoxide 42 harmful 42 BHA BHT 42 Reproductive Epidemiology 42 organophosphate insecticides 42 coumarin 42 Asbestos fibers 42 naturally occurring radioactive 42 organophosphate exposure 42 dihydrate 42 methylene 42 inhibit CYP#A# 42 dieldrin 42 estrogenic 42 PVC polyvinyl chloride 42 PCV1 42 chrysotile 42 Carbaryl 42 additives 42 Sodium hydroxide 42 bioaccumulates 42 chemical perchlorate 42 polycyclic aromatic hydrocarbons PAH 42 parabens preservatives 42 anthracene 42 dioxin TCDD 42 sodium benzoate 42 contains benzyl alcohol 42 Methylene chloride 42 inorganic salts 42 birth defects 42 mutagenicity 42 Benzyl 42 perfluorooctanoate PFOA 42 metal cations 42 ethyl mercury 42 Chlorinated 42 additive 42 Lewisite 42 purines 42 Thimerosal 42 chlorpyrifos 42 polychlorinated biphenyls 42 vegetable shortenings 42 When plutonium decays 42 contains theobromine 42 artificial sweetener aspartame 42 Diesel exhaust 42 Nitrogen Dioxide 42 Perfluorinated chemicals 42 ethylene dichloride EDC 42 ethylene glycol EG 42 allergic dermatitis 42 Glutamic Acid 42 dioxin 42 accidental ingestion 42 chemical flame retardants 42 Hydrogen sulphide 42 trichlorethylene 42 benzenes 42 cathinones 42 DecaBDE 42 Endocrine disruptors 42 plasticisers 42 vaccine preservative thimerosal 42 Paraquat 42 oestrogens 42 lipid soluble 42 MetAP2 42 lactones 42 secondhand tobacco 42 sodium phosphate 42 polychlorinated biphenyl PCB 42 tasteless odorless 42 chloromethane 42 rodent poison 42 bismuth oxychloride 42 formaldehyde toluene 42 fire retardants 42 insecticides herbicides 42 nonradioactive 42 Sanlu powdered milk 42 Nitrogen oxides 42 pyrethrins 42 benzalkonium chloride 42 nitrogen oxides emitted 42 chelator 42 mercury barium 42 improperly discarded 42 fluorinated specialty 42 sodium lactate 42 Non Ionising Radiation 42 oxidizing agent 42 Ethylene Glycol 42 thyroid tumors 42 ecamsule 42 naturally occurring amino acid 42 Carbon monoxide byproduct 42 cadmium selenium 42 Toxic Substances 42 Superfund site 42 halogenated flame retardants 42 allergenic proteins 42 hexane 42 Toxic chemicals 42 dispersible 42 biogenic amines occur 42 Bromate 42 thujone 42 Hydrazine 42 mutagens 42 plastics fibers 42 Thallium 42 methane nitrous oxide hydrofluorocarbons 42 EMFs 42 Polychlorinated biphenyls PCBs 42 PBDE chemicals 42 DuPont DeLisle plant 42 UV tanning beds 42 contaminate wheat gluten 42 decabromodiphenyl ether 42 HAAs 42 phosphine 42 ionizing radiation 42 aromatic hydrocarbons 42 mercury accumulates 41 substances 41 colorless crystalline 41 mercury vapors 41 carcinogen NNK 41 trihalomethanes THMs 41 Peptide YY 41 groundwater contamination 41 malondialdehyde 41 engineered nanoparticles 41 ethyl carbamate 41 maneb 41 harmful toxins 41 neurotoxicity 41 biologically inactive 41 mutagenic 41 sodium laureth sulfate 41 flammable solvents 41 diethanolamine 41 polycarbonate plastic bottles 41 perfluorooctane 41 main psychoactive substance 41 nitrous oxides 41 Atrazine 41 ulipristal 41 fluorocarbons 41 Ochratoxin 41 arsenic cadmium chromium 41 aristolochic acid 41 ultraviolet radiation 41 polybrominated diphenyl ethers PBDE 41 Sodium benzoate 41 dietary supplements containing ephedrine 41 methylnaphthalene 41 vinyl acetate 41 swallowing radioactive iodine 41 soman 41 Aspartame 41 Salicylate 41 Caesium 41 organo phosphate 41 carcinogen dioxin 41 carcinogenic toxins 41 chemical methyl isocyanate 41 polycarbonate plastics 41 paints dyes 41 genotoxic substance 41 dimethylformamide 41 chloroprene 41 silymarin 41 perfluorinated 41 VOCs 41 Sterols 41 brominated compounds 41 potentially harmful 41 thiomersal 41 preservative sodium benzoate 41 BDEs 41 magnesium carbonate 41 formaldehydes 41 TCE PCE 41 anti androgenic 41 bacterium Bordetella pertussis 41 Methyl 41 EDCs 41 naturally occurring toxin 41 Ammonium 41 thyroxine T4 41 volatile organic compounds 41 amalgam dental fillings 41 vinyl acetate monomer 41 brominated 41 dichlorobenzene 41 occupational exposures 41 chromium polybrominated biphenyl PBB 41 dimethyl sulfide 41 magnesium hydroxide 41 Classifying agents 41 dyes insecticides 41 aspartame 41 carboxylic acids 41 Ozone disinfection produces 41 Ethylbenzene 41 benzyl 41 sulfoxide 41 organophosphate pesticides 41 ethyl benzene 41 counterfeit impure 41 chemical Bisphenol 41 orofacial clefts 41 asbestos fibers 41 phosgene 41 Smeyne 41 glucuronolactone 41 powerfully addicting 41 canthaxanthin 41 solvent perchlorethylene 41 Dear EarthTalk Are 41 Dursban 41 cyanides 41 bacterial toxin 41 ozone depleting 41 Toxic Release Inventory 41 Diethylene Glycol 41 stain resistant coatings 41 beryllium cadmium 41 Tanning beds 41 propyl 41 coli bacteria 41 Board NRPB 41 Air Contaminant 41 xanthine 41 mold fungi 41 quaternary ammonium compounds 41 cadmium poisoning 41 Bq/m3 41 BPA 41 arsenic cyanide 41 Pesticide residues 41 ozone depleting chlorofluorocarbons 41 gingerol 41 heterocyclic amines 41 dental sealants baby 41 organophosphorus 41 arsenic mercury 41 pavement sealants 41 sodium laureth sulphate 41 carbonyls 41 cotinine metabolite 41 mercury arsenic 41 Anabaena 41 aflatoxin B1 41 nonsteroidal anti inflammatories 41 Bq kg 41 allura red 41 benzoate preservatives 41 Aflatoxins 41 radioactive strontium 41 cetyl 41 Volatile organic compounds 41 BPA bisphenol 41 estrogen ethinyl estradiol 41 PVC phthalates 41 trichlorethylene TCE 41 ethyl acrylate 41 Mercury Hg 41 Sodium Hydroxide 41 sodium lauryl 41 TLVs 41 methyl alcohol 41 ingested inhaled 41 dichloromethane 41 Oxidative stress occurs 41 ammonium salt 41 avobenzone 41 Hydrogen cyanide 41 PAH 41 Dieldrin 41 carbaryl 41 eucalyptol 41 Sulfates 41 Melamine contamination 41 ethyl mesylate 41 mercury dental fillings 41 perfluorocarbons 41 acute poisonings 41 nitrogenous compounds 41 ethylene dibromide 41 polychlorinated PCBs 41 botulinum neurotoxin 41 nonaddictive 41 phthalates chemicals 41 cyclohexane 41 biologically inert 41 C#H# 41 airborne pollutant 41 Inhaling asbestos fibers 41 hydrocyanic acid 41 methyl parathion 41 #,#,# tribromoanisole chemical 41 colorless odorless 41 tertiary butyl ether 41 geraniol 41 CFCs chlorofluorocarbons 41 picocuries 41 VOCs Volatile Organic Compounds 40 plasticizers 40 caustic wastewater 40 methoxy 40 μg L 40 Cotinine 40 triethanolamine 40 calcium caseinate 40 TSNA 40 perfluorinated chemicals PFCs 40 Cadmium 40 Prolonged exposure 40 theobromine 40 formamide 40 oversulfated chondroitin 40 ethene 40 Mycotoxins 40 Particulate matter 40 zearalenone 40 aldrin 40 sodium borate 40 methylamine 40 ethyl acetate 40 poly aromatic hydrocarbons 40 Hydroquinone 40 Oxalic acid 40 sodium salts 40 chromium mercury 40 Contaminant 40 calcium disodium EDTA 40 inorganic mercury 40 Trihalomethanes 40 Household cleaners 40 pepsin 40 containing mouthwashes 40 paints inks 40 estrogenic effects 40 maximum contaminant 40 particulate matter PM#.# 40 beryllium dust 40 TTHMs 40 flavor enhancer 40 tertiary butyl 40 containing preservative 40 hydrogen chloride 40 Propionate 40 phthalate esters 40 nitrogen oxides carbon monoxide 40 preservative thiomersal 40 malathion 40 stick cookware 40 plastic kitchenware glues 40 octane enhancer 40 soy isoflavone 40 preservative thimerosal 40 methylmercury 40 excitotoxins 40 dyes preservatives 40 fluorinated chemicals 40 Nitric acid 40 Nitrogen Oxides NOx 40 trihalomethanes 40 Sulfur dioxide 40 flame retardant additives 40 Unpasteurized milk 40 oral cavity pharynx 40 Reye syndrome rare 40 chrysotile fibers 40 psychoactive component 40 Oxidants 40 brodifacoum 40 Deca 40 Thimerosal mercury 40 epigallocatechin gallate 40 Enterobacter sakazakii 40 psoralen 40 Sulphur dioxide 40 Mercaptan 40 polyphenyl isocyanate 40 Potassium hydroxide 40 ultra violet radiation 40 environmental toxicants 40 chrysotile asbestos 40 bromine compounds 40 insecticide endosulfan 40 mercury arsenic cadmium 40 Teflon coated cookware 40 n butyl 40 perfringens 40 diazinon 40 organophosphate 40 halocarbons 40 microbiological contamination 40 Ellagic acid 40 occurs naturally 40 HFC #a 40 explosive atmospheres