Cyclohexane: Health effects
Description
Effects of cyclohexane on human health and the environment depend on how much cyclohexane is present and the length and frequency of exposure. Effects also depend on the health of a person or the condition of the environment when exposure occurs. Breathing large amounts of cyclohexane for short periods of time adversely affects the human nervous system. Effects range from headaches to anaesthesia, tremors, and convulsions. Contact with cyclohexane liquid or vapour can damage the eyes. These effects are not likely to occur at levels of cyclohexane that are normally found in the environment. Human health effects associated with breathing or otherwise consuming smaller amounts of cyclohexane over long periods of time are not known. Studies show that repeat exposure to large amounts of cyclohexane in air causes nervous system effects, eye damage, and respiratory effects in animals. The cyclohexane industry is now studying how its chemical affects the reproductive system and the development of the foetus of animals.
Entering the body
Cyclohexane enters the body when breathed in with contaminated air or when consumed with contaminated food or water. It can also be absorbed through skin contact. Cyclohexane is not likely to remain in the body due to its breakdown and removal in exhaled air and in urine.
Exposure
Exposure to cyclohexane can occur in the workplace or in the environment following releases to air, water, land, or groundwater. Exposure can also occur when people use products that contain cyclohexane or when they smoke cigarettes.
Health guidelines
Worksafe Australia:
Maximum 8 hour time weighted average (TWA) exposure: 1,030 mg/m3
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