Dichloro diphenyl trichloroethane

Dichloro-diphenyl-trichloroethane and newer insecticides. Nobel Prize... 

BOD Bochemical oxygen demand BOD5 Five-day biochemical oxygen demand COD Chemical oxygen demand CSTR Completely stirred tank reactor DDT Dichloro diphenyl trichloroethane DNA Deoxyribonucleic acid... 

Fig. 4 Scientific studies in sediments. HBCD hexabromocyclododecane PCBs polychlorinated biphenyls OCs organochlorine pesticides PCN polychlorinated naphthalene DDTs dichloro diphenyl trichloroethane...

Fig. 5 Scientific studies in biota. DDTs dichloro diphenyl trichloroethane HCB hexachlorobenzene HCHs hexachlorocyclohexanes OCs organochlorine pesticides OPs phosphorate pesticides PCBs polychlorinated biphenyls HBCD hexabromocyclododecane...

Dichloro diphenyl dichloroethane (DDD) Dichloro diphenyl trichloroethane (DDT) Dichloroethyl ether... 

DDT p,p -dichloro-diphenyl-trichloroethane. deacetylation removal of acetyl group, dealkylation removal of alkyl group, deaminate removal of amine group, dechlorination removal of chlorine group, de-ethylation removal of ethyl group, dehalogenation removal of halogen atom(s). 

Hydrolysis is important in the transformation of 1,1,1-trichloroethane (1,1,1 -TCA) to acetic acid [27]. Hydrolysis is also one of the steps in the reaction pathway for degradation of the pesticide dichloro-diphenyl-trichloroethane (DDT) [21]. 

The name of this insecticide is to many people synonymous with environmental pollution, and it is therefore an important example in this chapter but the story is not simple. DDT is an abbreviation for the chemical name of the insecticide dichloro-diphenyl-trichloroethane. It contains five chlorine atoms and is hence called an organochlorine compound. It was first made in 1874 but not found to be an insecticide until 1939 by Paul Muller. It was used extensively in the Second World War for the control of insects such as lice and mosquitoes, carriers of the diseases typhus and malaria. It was very effective in controlling these pests, and the diseases they carried, and undoubtedly thousands of soldiers lives were saved. Since then, the lives of millions of people throughout the world have also been saved by this insecticide both as a result of the reduction of these and other diseases and as a result of the improvement in crop yields which has reduced starvation. Indeed, in 1953 it was estimated that the use of DDT for malaria eradication had saved 50 million lives and averted more... 

A commonly used abbreviation for dichloro-diphenyl-trichloroethane, an organochlorine insecticide, detoxication... 

Dichloro-diphenyl-trichloroethane, or DDT, came to the attention of the U.S. army because, fighting a war in Africa and the South Pacific, there was a need to kill malaria-carrying mosquitoes. The nation s scientific capabilities had been mobilized for the war effort, and the task of controlling insect-borne diseases was assigned to the Agriculture Department s entomology laboratory in Orlando, Florida. The Orlando scientists recognized that war conditions required different approaches than peacetime solutions should be quick, rather than optimal, and they should be usable worldwide rather than tailored to local conditions.15... 

CFC CIO CSDS DDT EPA FDA GM MCA MIT NCI PCB PCE PHS RCRA TCE Chlorofluorocarbon Congress of Industrial Organizations Chemical Safety Data Sheet Dichloro-diphenyl-trichloroethane Environmental Protection Agency Food and Drug Administration General Motors Manufacturing Chemists Association Massachusetts Institute of Technology National Cancer Institute Polychlorinated biphenyl Perchloroethylene Public Health Service Resource Conservation and Recovery Act Trichloroethylene... 

What is important for us to understand is that the gender of the brain can be pushed by hormones in one direction while the sexuality of the genitals is pushed in another direction. The various interdependent hormones active during development comprise a complex system of chemical messengers—and the system is vulnerable to environmental impacts. For example, the insecticide dichloro-diphenyl-trichloroethane (DDT), in wide use since the 1960s, may be involved in the world-wide increase in the prevalence of transsexuals and homosexuals.12 The impact... 

Maternal dichloro-diphenyl-trichloroethane (DDT) exposure before pregnancy may be involved in some cases of offspring ADHD.39... 

U039. . 4-Chloro-m-cresol U061 Dichloro diphenyl trichloroethane... 

Examples Dichloro diphenyl trichloroethane (DDT) an insecticide discovered by the Nobel laureate Dr. Muller (1948), almost kills the malaria-carrying Anopheles mosquito completely. Though its long lasting effect is eventually very mueh beneficial from the standpoint of Anopheles mosquito control, but it gets accumulated in the environment unfortunately that may ultimately gain entry into the food chain and can affect both humans and animals equally. Hence, the use of DDT has been harmed completely by FDA, WHO and other law enforcing authorities and duly replaced by other safer insecticides . 

Since 1973, dichloro-diphenyl-trichloroethane (DDT) has been banned in the U.S. for all except emergency public health measures. Allergic contact dermatitis due to DDT has not been convincingly reported [58-61]. Positive patch-test reactions to 3% DDT were reported in cotton workers with dermatitis of exposed areas. No positive patch-test reactions to 1% DDT were obtained among 665 routine eczematous patients patch-tested by the International Contact Dermatitis Research Group (ICDRG) [10]. 

PCNBy pentachloronitrobenzene DNCBy dinitrochlorobenzene DNOCy 4,6 dinitro-o-cresol ANTUy naphthylthiourea DDT, dichloro-diphenyl-trichloroethane DD, mixture of 1,3-dichlor-opropene, 1,2-dichloropropane, epichlorhydrin and related compounds... 

Dichloro-Diphenyl-Trichloroethane (DDT) Organic chemical that was widely used for insect control during and after World War II but has been banned in many countries. 

In the book Silent Spring (1962), Rachel Carson described the negative effect of the pesticide dichloro-diphenyl-trichloroethane (DDT) on birds. This book increased environmental awareness and is often cited as the beginning of the environmental movement. 

The finer activity is usually measured and compared by using injections of endrin and dichloro-diphenyl-trichloroethane (DDT). The breakdown products are endrin ketone and endrin aldehyde, respectively dichloro-diphenyl-dichloroethane (DDD). With breakdown percentages less than 15% each, an insert liner is accepted to be inert (e.g. EPA method 8081b). 

DDT Dichloro-Diphenyl-Trichloroethane 75 23 7 Not tested slight dicoloring expected expected life " months to years " 75 52 7... 

Aryl halides tend to be chemically unreactive and include persistent environmental pollutants such as dichloro-diphenyl-trichloroethane (DDT), polychlorinated biphenyls (PCBs), dibenzo-p-dioxins (PCDDs), dibenzofurans (PCDFs), and polybrominated diphenyl ethers (PBDEs). Many studies of the photochemistry of halogenated aromatic compounds have been stimulated by environmental concerns, the goal often being to understand whether photolysis is an important sink for these compounds in natural waters - or in the atmosphere.The photochemistry of aryl halides causes problems in this context because many aryl halides have minimal absorption in the region of the tropospheric solar spectrum (>295 nm), and experiments at environmentally irrelevant wavelengths such as 254 nm are... 

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