high reactivity and should be stored away from oxidizing agents such as perchlorate, peroxides, permanganates, chlorates, nitrates, chlorine, bromine, and fluorine. All activities inducing a potential fire hazard should be avoided. For instance, smoking, having open flames or using sparking tools to open or close storage containers should be prohibited. It is also advised that grounded and bonded metal containers are used for the transport of chloroprene. Occupational exposure limits A table of occupational exposure limits (OELs) from various jurisdictions follows. In general, the OELs range from 0.55 ppm to 25 ppm. In the ACGIH's 2018 TLV and BEI booklet, chloroprene was designated with a skin and an A2 notation. The skin notation designation is based on animal and human research that have shown chloroprene's ability to be absorbed by the skin. An A2 designation by the ACGIH means that the substance is a suspected human carcinogen with support from human data that are accepted as adequate in quality but may not be enough to declare an A1 (known human carcinogen) designation. Additionally, the TLV basis for these designations are due to scientific studies that show an association between chloroprene exposure and lung cancer, upper respiratory tract (URT) and eye irritation. Environment The fate of chloroprene in the environment has been examined. Due to its volatility and extreme reactivity, it is not expected to bioaccumulate. Transportation Only stabilized chloroprene can be transported in U.S.. References External links IARC Monograph "Chloroprene." LaPlace, St. John the Baptist Parish, Louisiana Safety and Health Topics | Fire Safety | Occupational Safety and Health Administration Conjugated dienes Monomers Organochlorides Hazardous air pollutants IARC Group 2B carcinogens Occupational safety and health