Thanks for your interest in Berryman. PEA is non-hazardous and therefore not required to be listed on the SDS. While we consider the actual concentration of PEA to be proprietary, we at Berryman have always strived to ensure our products fully satisfy their marketing claims, i.e they do what they say, and Berryman B-60 High Mileage Fuel System Rejuvenator (part #7516) is no exception.