Contact with product may cause frostbite or freeze burns in exposed tissues. Irritation may also occur. Frostbite effects are a change in color of the skin to gray or white, possibly followed by blistering. Skin may become inflamed and painful. Ingestion is unlikely.
Product is a non-toxic simple asphyxiant.
High concentrations may exclude an adequate supply of oxygen to the lungs. 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. Remove victim from the source of contamination.