Why is cyclohexane volatile

Make sure you understand how to interpret the standards before you use them. There is no guideline for cyclohexane in the Australian Drinking Water Guidelines. Cyclohexane is non-persistent in water, with a half-life of less than 2 days.

The half-life of a pollutant is the amount of time it takes for one-half of the chemical to be degraded. The concentration of cyclohexane found in fish tissues is expected to be somewhat higher than the average concentration of cyclohexane in the water from which the fish was taken.

Cyclohexane has moderate acute toxicity to aquatic life. It has caused membrane damage in an ornamental crop species. Insufficient data are available to evaluate or predict the short-term effects of cyclohexane to birds or land animals. Cyclohexane has moderate chronic toxicity to aquatic life.

Insufficient data are available to evaluate or predict the long-term effects of cyclohexane to plants, birds, or land animals. Cyclohexane enters the environment mainly in industrial and municipal discharges. Cyclohexane evaporates when exposed to air. It dissolves slightly when mixed with water. Most direct releases of cyclohexane to the environment are to air.

Cyclohexane also evaporates from water and soil exposed to air. Once in air, it is expected to break down to other chemicals. Because it is a liquid that does not bind well to soil, cyclohexane that makes its way into the ground can move through the ground and enter groundwater. Plants and animals living in environments contaminated with cyclohexane can store small amounts of the chemical.

Cyclohexane by itself is not likely to cause environmental harm at levels normally found in the environment. Cyclohexane can contribute to the formation of photochemical smog when it reacts with nitrogen dioxide, ozone, and other volatile organic carbon substances in air.

The quantity of vapour produced increases. The lower symmetry of toluene molecules prevents them from packing as efficiently as benzene molecules. In contrast, the boiling point of toluene is higher than that of benzene, indicating that the intermolecular attractive forces are larger in liquid toluene than in liquid benzene. Boiling points In benzene, the only attractions between the neighbouing molecules are the van der Waals dispersion forces.

The higher boiling point is presumably due to the ease with which temporary dipoles can be set up involving the delocalized electrons. Insight into the cellular and molecular mechanisms of neural degeneration induced by cyclohexane will help minimize the potential risk associated with the intentional or accidental inhalation of this volatile compound. TC: Work conception and manuscript writing. OG: Work conception, manuscript writing and financing. The authors declare that the research was conducted in the absence of any commercial or financial relationships that could be construed as a potential conflict of interest.

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