Vapors may travel a considerable distance to a source of ignition. Mixtures of n-butane in air will burn or explode. Vapors are heavier than air and may collect in low spots. Fire fighters should wear self-contained breathing apparatus and other protective equipment. May act as an anesthetic.
Vapor is slight irritant.
Persons in ill health where such illness would be aggravated by exposure to n-butane should not be allowed to work with or handle this product. If breathing is difficult, administer artificial respiration with supplemental oxygen. Keep warm and at rest. Caution when entering contaminated area due to fire and explosion hazard. Safely ventilate area to less than LEL concentration.