¨¨¨ Corexit and crude oil combined “can be more toxic than either alone,” according to Susan D. Shaw of the Marine Environmental Research Institute.

But Corexit has been the dispersant of choice in past oil spills, and it’s what oil companies have in their stockpiles. If field tests with Dispersit go well, we can only hope that BP relents ...

Both Corexit and Dispersit were tested by the EPA, and according to those results, Corexit was 54.7 percent effective at breaking down crude oil from the Gulf, and Dispersit was 100 percent effective.

Don't miss out on the headlines from Gladstone. Followed categories will be added to My News. It follows the use of the agent Corexit 9527 in the emergency response to the Shen Neng 1 oil spill in ...

The oil company defended its use of Corexit and taken issue with the methods the agency used to estimate its toxicity, and continued to spray the chemicals past the E.P.A. deadline.

Two versions of Corexit were provided in the Gulf emergency. The newest version is called 9500, which has a different mix of chemicals than the previous version, called 9527.

But the Corexit may not have done its job properly, said Wade Jeffrey, a biologist with the University of West Florida's Center for Environmental Diagnostics and Bioremediation.

Corexit had been blamed for a string of illnesses after the BP oil spill in the Gulf of Mexico in 2010, but local fishermen were not hugely concerned.

That Corexit would be the first line of dispersant defense in the Gulf makes sense. Originally synthesized by Exxon, various formulations of it have been used for decades to dilute spilled oil and ...

When the EPA approved Nalco’s Corexit to be used as an oil dispersant in the Deepwater Horizon disaster last month, we were more than a little concerned –trade secrets kept the exact ...

Only limited quantities of COREXIT 9527, which were drawn from existing dispersant stockpiles from around the world, have been used in the Gulf spill response.

"COREXIT" is one type of dispersant used. Dr. Jeffery and UWF conducted a study to see how COREXIT affected the bacteria in the Gulf. "How they respond, that's been the harder part.