Water Bottles and Plastics

What's in these plastics anyway?

Some plastics are not food safe, so watch what kind you put your food in, and especially what kind you heat your food in.

http://www.americanchemistry.com/s_plastics/bin.asp?CID=1102&DID=4645&DOC=FILE.PDF

http://www.sfgate.com/cgi-bin/article.cgi?f=/c/a/2007/05/04/BUGUSPKP6D1.DTL&hw=lazarus&sn=004&sc=214