![]() The calculated half-life and lifetime of hexane due to reaction with the OH radical are 1.8 days and 2.6 days, respectively. The dominant tropospheric loss process for hexane is by reaction with the hydroxyl (OH) radical. In the atmosphere, hexane is expected to exist almost entirely in the vapour phase due to its relatively high vapour pressure. Where it ends upĭue to its high volatility and low solubility in water, hexane in the environment will be mainly in the atmosphere. ![]() Hexane is only slightly soluble in water, but is readily absorbed by the lipid phase (fatty parts) of aquatic organisms, which can result in transport in the environment. If released to soil, hexane will usually quickly evaporate to the atmosphere. In the atmosphere it is one of the volatile organic substances that contribute to the formation of photochemical smog, through interaction with nitrogen dioxide and ozone. There is no guideline for n-hexane in the Australian Drinking Water Guidelines.īecause of its very low solubility in water and high volatility, it will usually be rapidly transported to the atmosphere without major damage to the biota. Make sure you understandīefore you use them. These standards are only appropriate for use in workplaces and are not limited to any specific industry or operation. Maximum eight hour time weighted average (TWA): 20 parts per million (72 mg/m 3).Workplace exposure standards for airborne contaminants: Monitoring data indicate that hexane is a widely occurring atmospheric pollutant. Individuals are most likely to be exposed to hexane in the workplace. The most probable route of human exposure to hexane is by inhalation. Hexane evaporates very quickly and so the most common exposure is from breathing air containing hexane. It can also cause dermatitis, nausea, confusion, jaundice, and coma. It can cause numbness to the feet and hands and muscle weakness in the feet and lower legs, which can lead to paralysis of the arms and legs. Exposure to n-hexane can cause toxicity in peripheral nerves, muscle wasting, and atrophy. The only people known to have suffered ill-health effects from n-hexane were exposed to it at work. The National Pollutant Inventory ( NPI) holds data for all sources of n-hexane emissions in Australia. It is incompatible with strong oxidisers. It will attack some forms of plastics, rubber, and coatings. n-Hexane can react vigorously with oxidising materials such as liquid chlorine, concentrated oxygen, and sodium and calcium hypochlorite. Flammable vapour may spread away from a spill. Hexane is highly flammable, and its vapours can be explosive. Slightly soluble 0.000947 g/100 mL Chemical properties It is miscible with alcohol, chloroform, and ether. Synonyms: n-hexane normal hexane hexyl hydride skellysolve B dipropyl gettysolve-b hex Physical propertiesĬolourless liquid with a mild petrol-like odour detectable at 65 to 248 ppm. n-Hexane is used in binding books, working leather, shaping pills and tablets, canning, manufacturing tires, and making baseballs. N-hexane is also an ingredient of special glues that are used in the roofing, shoe, and leather industries. ![]() They are also used as cleaning agents in the textile, furniture, shoemaking, and printing industries, particularly rotogravure printing. The major use for solvents containing n-hexane is to extract vegetable oils from crops such as soybeans, flax, peanuts, and safflower seed. Common names for these solvents are commercial hexane, mixed hexanes, petroleum ether, and petroleum naphtha. It is used in laboratories, primarily when it is mixed with similar chemicals to produce solvents. N-Hexane is a chemical extracted, and further quantities synthesised, from crude oil. ![]()
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