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Tetraethyl lead: An anti-knock compound added to motor fuel. Also known as tetraethylplumbane, tetraethyl lead has highly adverse effects on human health.It causes lead poisoning.n 1927 the Surgeon General set a voluntary standard for the oil industry to follow in mixing tetraethyl lead with gasoline. This standard -- 3 cubic centimeters per gallon (cc/g) -- corresponded to the maximum then in use among refiners, and thus imposed no real restraint.
For sodium perborate, see Sodium perborate. Borax, also known as sodium borate, sodium tetraborate, or disodium tetraborate, is an important boron compound, a mineral, and a salt of boric acid. Powdered borax is white, consisting of soft colorless crystals that dissolve easily in water.Borax has a wide variety of uses.It is a component of many detergents, cosmetics, and enamel glazes.orax, sodium tetraborate decahydrate, according to one study, is not acutely toxic. Its LD50 (median lethal dose) score is tested at 2.66 g/kg in rats, meaning that a significant dose of the chemical is needed to cause severe symptoms or death. The lethal dose is not necessarily the same for humans.