Introduction of Bromacil lithium salt
Bromacil lithium salt dark red liquid or reddish-brown gas at room temperature. It has a mass of 261 D. It is prepared for use as a powder . It is a weak organic acid, forming an ion with a valance of -1. Water solubility is pH dependent, and relatively low in deionized water. It has low volatility (vapor pressure 3.07 x 10-7 mmHg). The Molecular Formula is Br2, Molecular Weight is 159.808, and CAS Registry Number is 7726-95-6.
Bromacil lithium salt is an herbicide which inhibits photosynthesis. It is used for weed control on rights-of-way. In California, 4,478 lbs were applied in the year 2000. It is produced for commercial use by dissolving bromacil in a solution of lithium hydroxide (LiOH). Bromacil lithium salt(CAS NO: 7726-95-6) is a weak organic acid, with limited solubility. Much greater solubility is achieved in the ionic form produced by reaction with lithium hydroxide. It is stable, incompatible with reducing agents, alkali metals, powdered metals, steel, iron, copper, organic materials.
Because of the dissociation of this salt to bromacil and lithium ion, relevant data on the potential reproductive toxicity of bromacil and lithium are also provided. It is a substituted uracil herbicide used on food crops and rights-of-way. Lithium is the least massive of the alkali metals. It is used for a number of industrial applications. It is also used extensively for treatment of bipolar disorder (manic-depression) and acute mania.
Bromacil lithium salt is rapidly absorbed from the gastrointestinal (GI) tract. It is hydroxylated, and excreted mainly in urine. Lithium is also rapidly absorbed from the GI tract. It does not undergo metabolism in the body, and is excreted mainly in urine.
Bromacil lithium salt is produced for commercial use by addition of bromacil to a solution of lithium hydroxide (LiOH). This produces a more concentrated solution than would addition of bromacil to, for example, water with approximately neutral pH, due to the relatively low solubility of bromacil at neutral pH. The greatest use was for weed control in rights-of-way.
Bromacil and lithium both have relatively low acute and chronic toxicity. In acute studies in rats with bromacil and bromacil lithium salt, females were somewhat more sensitive than males. On a molar basis, in rats the acute oral LD50 of lithium was about three times the LD50 of bromacil. The LD50 of bromacil lithium salt was about one-half that of bromacil. This could be due to the toxicological effect of lithium, or it could be due to the fact that bromacil lithium salt was administered as a true solution, whereas bromacil was administered as a suspension.
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