| gptkb:trichloromethane | restricted in many countries | 
                        
                            
                                | gptkb:Sodium_Nitrite | banned as food additive in some countries | 
                        
                            
                                | gptkb:2-butanone | regulated as a volatile organic compound in the US | 
                        
                            
                                | gptkb:chloroform | banned as anesthetic in many countries | 
                        
                            
                                | gptkb:iodomethane | restricted in the United States | 
                        
                            
                                | gptkb:Trisodium_Phosphate | Banned as food additive in the European Union | 
                        
                            
                                | gptkb:N2O | controlled substance in some countries | 
                        
                            
                                | gptkb:arsenic_trioxide | banned in some countries for non-medical use | 
                        
                            
                                | gptkb:iodomethane | banned in the European Union | 
                        
                            
                                | gptkb:Trisodium_Phosphate | Permitted as food additive in the United States | 
                        
                            
                                | gptkb:methyl_ethyl_ketone | regulated as a hazardous air pollutant in the US |