Vol. 3,No. 11, November 2013
Author(s): Mona Kiminezhad Malaie, Parisa kiminezhad Malaie
Abstract: A 2, 2-dichloropropionic acid is categorized as organic herbicidal compounds under the class aliphatic. The common name of 2, 2-DCP is referred as ᾿Dalapon᾽ as designated by both the British Standards Institution and Weed Science Society of America (Ashton and Crafts, 1973). In the meantime, ᾿Dalapon᾽ is also considering the trademark of 2, 2-DCP sold as herbicide by the Dow Chemical Company. In addition, there are other trade names available in the market for instant Unipon, Basinex P, Dalacide and Radapon. The commercial name (Dalapon) refers to the herbicide of 2, 2-DCP in the form of the sodium salt and the products usually contain 85% sodium salt of 2, 2-DCP. The characteristic of 2, 2-dichloropropionate in its pure acid form is a colourless liquid with an acrid odor and as a sodium salt; it tastes salty and is a white to off-white powder that readily takes up water or moisture. 2, 2-DCP is stable under normal temperatures and pressures, nonflammable but may pose a slight fire hazard if exposed to heat or flame. Thermal decomposition of 2, 2-DCP will release corrosive fumes of hydrogen chloride or toxic chlorine gas. The molecular structure of 2, 2-DCP consist of three carbon compound with molecular formula CH3CH (Cl2) COO (as shown in Figure 2.1). Furthermore, 2, 2-DCP or Dalapon was proven in several research to be non carcinogenic. This confirmed by feeding animals using Dalapon salt for a few months up to two years. It was clearly that no carcinogenic activates or mutation has been observed.
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