At the California state capitol, there's mounting political pressure to ban certain chemicals found in toys and baby products, NBC11's Mike Luery reported.

A new study released Tuesday from Environment California said some popular toys and baby products contain a toxic chemical known as Bisphenol A and Phtalates that are used to harden plastic in baby products.

Those chemicals may be harmful to children, according to San Francisco Assemblywoman Fiona Ma.

"My bill will ban the use of two chemicals, Phtalates and Bisphenol A, from baby products for babies under the age of 3 years old," Ma said.

Ma's bill would prohibit manufacturers from using those chemicals in baby products starting in 2009.

"Well the good news is that there are alternatives. People can use safety glass. There's other kinds of plastics they can use that don't leach Bisphenol A," said Dan Jacobson of Environment California.

Opponents of the bill said it's based on bad science and part of a campaign that's designed to scare people unnecessarily, Luery reported.

"We think policy should be based on good science, not just good soundbytes or emotional rhetoric," said Tim Shestek of the American Chemistry Council.

The American Chemistry Council said the evidence shows these products are safe.

"Because we've been using them for so many years, and we haven't seen any problems come from the children drinking out of the bottles, and they use them for cups and bottles and pacifiers," said Chelle Blair of the Capitol Square Children's Center.

Hearings to discuss the potential ban will begin in April.