Direct contact with product can cause frostbite and freeze burns in exposed tissues. Contact with evaporating liquid may cause tissue freezing. Frostbite effects are a change in color of the skin to gray or white, possibly followed by blistering.
Ingestion is unlikely.
Methane and nitrogen are simple asphyxiants. Exposure to high concentrations of this gas mixture may exclude an adequate supply of oxygen. As asphyxiation progresses, nausea, vomiting, prostration, and loss of consciousness may result, eventually leading to convulsions, coma, and death. Oxygen deficiency during pregnancy has produced developmental abnormalities in humans and experimental animals. Severe Hazard 4.