I’m pretty sure it’s not. In fact, I would bet on it being inedible, especially the polycarbonate variety: Plastic #7

http://www.nytimes.com/2008/04/25/business/worldbusiness/25plastic.html?ex=1366862400&en=f35ba1b831f1b598&ei=5124&partner=permalink&exprod=permalink

In general, the safest materials to use for cooking or storage are stainless steel, glass, and cast iron. Materials in most plastics, regardless of how high quality they are, have the potential to leach unwanted chemicals into your body which can cause inflammation and, in the case of bisphenol A, disrupt hormone regulation which can lead to cancer. A similar story can be told about Teflon, regardless of the research from DuPont that says otherwise.

For food storage, I prefer to reuse glass jars and employ trusty pyrex bowls with lids (yes, the lids are plastic, but not dreaded #7 plastic). I usually don’t fill them to the brim either so that my food, especially when hot, stays relatively untouched by potential carcinogens.