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    • EDF Health

    Chemical Concerns – Insights on Air Pollution, Public Health, and Chemical Safety

    Presto: Corexit® dispersant ingredients revealed

    Posted: in Health policy, Regulation

    Written By

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    Richard Denison, Ph.D., is a Senior Scientist.

    With no fanfare whatsoever, a list of the ingredients in the Corexit® dispersants has been posted on EPA’s website.  I can’t say when the list appeared — I was pointed to it by Elana Schor, a reporter with E&E News, who discovered the list a little earlier today, buried well down on the agency’s dispersants page.

    The components of COREXIT® 9500 and 9527 are:

    CAS Registry Number Chemical Name
    57-55-6 1,2-Propanediol
    111-76-2 Ethanol, 2-butoxy-
    577-11-7 Butanedioic acid, 2-sulfo-, 1,4-bis(2-ethylhexyl) ester, sodium salt (1:1)
    1338-43-8 Sorbitan, mono-(9Z)-9-octadecenoate
    9005-65-6 Sorbitan, mono-(9Z)-9-octadecenoate, poly(oxy-1,2-ethanediyl) derivs.
    9005-70-3 Sorbitan, tri-(9Z)-9-octadecenoate, poly(oxy-1,2-ethanediyl) derivs
    29911-28-2 2-Propanol, 1-(2-butoxy-1-methylethoxy)-
    64742-47-8 Distillates (petroleum), hydrotreated light

    More to come.

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