Hydrogen

Formula                 : H2
Physical Properties : Form: colourless gas 
                                Stability: Stable, but highly flammable 
                                Melting point: -259 C 
                                Boiling point: -253 C 
                                Critical temperature: -240 C 
                                Flammability range: 4% - 75% in air

Principal Hazards    : Hydrogen is very flammable. It forms a potentially explosive mixture with air over 
                                 a wide composition range (4% - 75% hydrogen by volume).

Toxicological Properties : 
               • Hydrogen is inactive biologically and essentially nontoxic; therefore, the major property    

                    is the exclusion of an adequate supply of oxygen to the lungs.

               • Hydrogen is not listed in the IARC, NTP or by OSHA as a carcinogen or potential 

                    carcinogen.

               • Persons in ill health where such illness would be aggravated by exposure to hydrogen 

                    should not be allowed to work with or handle this product.

Reactivity Data        :  Stability : Stable

                                 Incompatibility (Materials to Avoid) : Oxidizers

                                 Hazardous Decomposition Products : None

                                 Hazardous Polymerization : Will not occur

                                 Conditions to Avoid : None