For DEHP, the best source would be to read the CDC's writeup on it.
https://www.atsdr.cdc.gov....asp?id=376&tid=65 Section 1.5 has the nuts and bolts, but for most exposures (from plastics leeching that contain DEHP) it is not often a hazard, but higher doses can be.
Bottom line... don't eat your PA system
