Number 3 PlasticsV (Vinyl) or PVC
Found in: Cooking oil bottles, clear food packaging
Why? Number 3 plastics may release toxic breakdown products (including pthalates) into food and drinks.
The risk is the greatest when containers start breaking down, are put through the dishwasher or when they are heated in the oven or microwave. PVC can release highly toxic diox
ins into the environment, and the materials can off-gas toxic plasticisers into your home.
Number 6 Plastics
PS (polystyrene)
Found in: Disposable plates and cups, meat trays, egg cartons, carry-out containers
Number 6 plastics (polystyrene) are made into soft Styrofoam-style cups as well as rigid foams and hard plastic products, so remember to look for those little numbers in the arrows (don't feel bad if you need a magnifying glass). Avoid using them as much as possible.
Why? Number 6 plastics can release potentially toxic breakdown products (including styrene). Get this: particularly when heated! That insulated coffee cup -- the one that 'knows' when to keep your drink warm -- doesn't seem so smart anymore does it?
Plastic Number 7
Miscellaneous
Found in: Baby bottles, three- and five-gallon water bottles, certain food 
containers
A wide range of plastic resins that don't fit into the other six categories are lumped into number 7. Some are quite safe, but the ones to worry about are the hard polycarbonate varieties, as found in various drinking containers (like Nalgene bottles) and rigid plastic baby bottles.
Why? Studies have shown polycarbonate can leach bisphenol A, a potential hormone disruptor, into liquids. According to Trasande, no level of bisphenol A exposure is known to be truly safe, and in August a government panel expressed 'some concern' that the ingredient causes neural and behavioral problems in children.
Why not play it safe and swap out those hard plastic baby and water bottles for Number 1, 5 or corn-based plastics, or even shatter-resistant glass?
Live a BPA FREE life and check that freezer, baby bottles & takeaway containers.
To see a list of our baby feeding BPA FREE products click here.
Andrew