User talk:Smkirk2

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Thank you for your contributions to Wikipedia! Paulthomas2 (talk) 02:47, 5 December 2012 (UTC)

http://pmep.cce.cornell.edu/profiles/extoxnet/carbaryl-dicrotophos/dalapon-ext.html

The physical properties and guidelines were provided by this source. Dalapon is an acid that is most typically formulated with sodium or magnesium salts. When Dalapon is in its pure form is a clear liquid. When dalapon is mixed with the magnesium and sodium salts, a white powder is formed. Dalapon is a substance that will readily take up water or other various types of moisture. Overall Dalapon is known to be nonflammable however under certain conditions it can pose a slight flammability hazard. Dalapon can undergo hydrolysis from temperatures ranging from 25 degrees Celsius to 50 degrees Celsius at which the temperature is optimal for rapid hydrolysis. When this molecule is exposed to oxidizers, incidence of flammability increases. The acidic pH of this molecule is 1.32 and has a melting point of 166.32 degrees Celsius. Dalapon is also highly soluble in ethanol. It has a molecular formula of C3H4O2Cl2.

Pesticides Synthesis Handbook: http://books.google.com/books?id=WGDtttLgQBwC&pg=PA777&lpg=PA777&dq=Dalapon+synthesis+reaction&source=bl&ots=Yeg4jJXXRk&sig=e_kNrwUk6pJTSa4swznGAQ7xQnE&hl=en&sa=X&ei=eEswUZmvO8TqyQGrm4FA&ved=0CC0Q6AEwAA#v=onepage&q=Dalapon%20synthesis%20reaction&f=true Synthesis of Dalapon: It is a chlorinated aliphatic acid with the following reaction: From this example we can see the synthesis reaction of Dalapon. It shows each step as well as reactants used in the reaction. From this source I also gathered that Dalapon is used as a herbicide. Other interesting facts from this page is that it is found in citrus, sugar cane, rubber, coffee, olive, bananas, and asparagus.

http://www.academicjournals.org/ajmr/pdf/Pdf2012/23Feb/Wong%20and%20Huyop.pdf

In this experiment, the researchers used dalapon as the sole carbon source for 4 different bacterial strains. They then analyzed the rDNA from the bacteria in order to complete a study of the genus of the bacteria. Their goal of this experimental study was to pinpoint bacteria that had the ability to use Dalapon as their only source of carbon to see if the bacterial strains could use, as well as degrade the dalapon molecule at a high rate. They found that four out of the ten took a short time to form colonies that were observable. They used this information to infer that dalapon was efficiently used as the only carbon source and from this information they continued on to analyze the growth profile of each of the colonies that were able to grow and produce colonies beyond the initial phases. With this information they then were able to establish the bacterial lineage that these particular colonies stemmed from. They also found that at too high of concentrations, dalapon is toxic and therefore the bacteria could not obtain growth at these high concentrations. They concluded that dalapon as an example of a dehalogenase gene are well distributed and conserved across the wide spectrum of the microbial genera. Also, the high growth rate of one of the colonies indicated that this particular bacterial strain was able to utilize residual dalapon that was in the soil or in natural environment.

http://www.epa.gov/ogwdw/pdfs/factsheets/soc/tech/dalapon.pdf Dalapon is used to control the growth of grass in many different types of plants such as trees and cotton plants. Dalapon is released to the environment directly with a goal of controlling annual and perennial grasses. If it is released into the soil, microbial degradation can be a result. This molecule has a density of 1.4 at 15 degrees Celsius. It is very soluble in water with a solubility of 800g/L of water at 25 degrees Celsius. It also has the property of high mobility in water. Smkirk2 (talk) 07:16, 1 March 2013 (UTC)