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Early products in the line included Corexit 7664 [4] and Corexit 8666. Corexit 9527 is one of the first modern concentrate dispersants and has been in use since the mid 1970s. Corexit 9500 was designed to replace Corexit 9527. In 2002, Corexit 9527 and Corexit 9500 were the only two chemical dispersants stockpiled in large quantities in the U.S ...
The primary dispersant used were Corexit 9527 and 9500, which were controversial due to toxicity. In 2012, a study found that Corexit made the oil up to 52 times more toxic than oil alone, [ 12 ] and that the dispersant's emulsifying effect makes oil droplets more bio-available to plankton . [ 13 ]
[1] The spill was also notable for the volume of Corexit oil dispersant used to help disperse the oil. Although approved by the EPA, no toxicology studies had been done at this time. In 2011, a toxicology study was done and it reported 57 chemicals in the ingredients including chemicals associated with cancer, skin irritation from rashes to ...
Sign protesting use of toxic Corexit chemical dispersant in the Deepwater Horizon oil spill, at the Bastille Day Tumble, French Quarter, New Orleans Environmental scientists say the dispersants, which can cause genetic mutations and cancer, add to the toxicity of a spill, and expose sea turtles and bluefin tuna to an even greater risk than ...
Toxicity class refers to a classification system for pesticides that has been created by a national or international government-related or -sponsored organization. It addresses the acute toxicity of agents such as soil fumigants , fungicides , herbicides , insecticides , miticides , molluscicides , nematicides , or rodenticides .
In 40 CFR 156.62, the EPA established four Toxicity Categories for acute hazards of pesticide products, with "Category I" being the highest toxicity category (toxicity class). Most human hazard, precautionary statements, and human personal protective equipment statements are based upon the Toxicity Category of the pesticide product as sold or ...
The Committee on Toxicity of Chemicals in Food, Consumer Products and the Environment (COT) is a UK independent scientific committee that provides advice to the Food Standards Agency, the Department of Health and other government departments and agencies on matters concerning the toxicity of chemicals. [1]
Pyriproxyfen has low acute toxicity. [11] According to WHO and FAO , at elevated doses exceeding 5000 mg/kg of body weight , pyriproxyfen affects the liver in mice, rats and dogs. [ 12 ] It also changes cholesterol levels, and may cause modest anemia at high doses.