This is actually something I have been looking into and have found a wealth of information. Here's what I've discovered so far:
Below is a link to the Oregon Environmental Council's (OEC) website where most of this info comes from and a link to an article detailing the ban in Canada. The OEC's website contains a quick summary of some unsafe versus safe sippy cups and bottles in addition to a guide to "safer" plastics in relation to all plastic products - not just stuff for babies.
Here is a link to information about safe(r) pacifiers:
http://zrecs.blogspot.com/2007/08/bisphenol-bpa-in-pacifi...
The rest is a brief summary of what I have found.
Hope this helps!
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Baby bottles and sippy cups can contain either
bisphenol-A (#7 – BAD)
or
polypropylene (#5 – OKAY)
Plastic making up the polypropylene bottles is usually cloudy and squeezable. Polycarbonate plastic bottle containing bisphenol-A is generally clear and very hard.
Baby bottle nipples are usually made of silicone or latex rubber. Silicone nipples are lighter in color and are safer, as latex rubber nipples may leach carcinogenic nitrosamines.
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Baby bottles and "sippy" cups to avoid and alternatives:
Avoid: Polycarbonate product examples:
• Bottles: Avent; Dr. Brown's; Evenflo (clear); First Years; Playtex Vent Aire; Sassy; TupperCare
• "Sippy" cups: Gerber Suzy's Zoo & Sippy Snacker; Gerber Soft Starter
Safer alternatives: Non- polycarbonate product examples
• Bottles: Evenflo glass or pastel polyethylene plastic; Gerber polypropylene opaque plastic; Medela breastmilk polypropylene storage bottles and polyethylene milk storage bags; disposable bottle systems with polyethylene plastic inserts (e.g., Playtex Nurser, Playtex Drop-Ins)
• "Sippy" cups made of polypropylene or polyethylene: Avent Magic Cup; Evenflo cups (inner lining); First Years Take & Toss; Gerber Color Change, Sport Fun Grip; Playtex Sipster, Big Sipster & Quick Straw
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Artical: Canada Takes Steps to Ban Most Plastic Baby Bottles
http://www.nytimes.com/2008/04/19/business/worldbusiness/...
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Oregon Environmental Councils website
http://www.oeconline.org/kidshealth/tinyfootprints/