Phosphine (PH3) is a colorless, highly toxic, flammable liquefied compressed gas stored in steel cylinders.
                                    
                                    
                                        
                                            Product characteristics
                                        
                                        Phosphine must be handled as a highly toxic and spontaneously combustible gas. Inhalation of phosphine can affect the heart, respiratory system, kidneys, gastrointestinal tract, nervous system and liver.