First recent evidence is that petroleum is not from plants and animals, but rather methane is outgassed from the center of the earth, and some is trapped as natural gas. Under heat and pressure it over long periods of time becomes petroleum. There is not complete agreement, and some geologists do still think it is from plants and animals though.

Petroleum is made up of lots of hydrocarbons from very short to very long chains and also a number of cyclic compounds. Some of the compounds are very toxic, such as benzene and ether, others are completely inert, such as petroleum jelly and mineral oil.

Marshall

On 6/13/2013 7:54 AM, PT Ferrance wrote:
Then why is crude oil considered a carcinogen by some?
PT

------------------------------------------------------------------------
*From:* sol <[email protected]>
*To:* [email protected]
*Sent:* Wed, June 12, 2013 8:35:33 PM
*Subject:* Re: CS>Re: silver-digest Digest V2013 #170

PT Ferrance wrote:
> petroleum USP is made from petroleum.
Ummm, petroleum is made from plants and animals by the geologic processes of the earth, and thus is as natural as any refined vegetable oil.
sol


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