Will ziplock bags leach chemicals?

Chef's answer
One common #7 plastic is polycarbonate, a shatter-resistant material used in things like baby bottles and reusable water bottles. Polycarbonates readily leach a toxic compound called bisphenol-a (BPA) into food and drink.
Frequently asked Questions 🎓
Bleached flour works well in recipes like cookies, pancakes, waffles, quick breads, and pie crusts. Meanwhile, unbleached flour is better suited for puff pastries, eclairs, yeast breads, and popovers.
We can help! Bleached flour and unbleached flour can be used interchangeably in recipes.
There is a question that does bleach damage silicone sealant? The answer is yes, and then chances are present. Mix all the solution well..
Editor: The protein levels in unbleached and bleached flours are the same, so they can be used interchangeably. However, some claim that bleached flours are whiter in color, and others say that the flavor in unbleached flours are the same.
Bright White Flour In the US, flour is bleached using food additives including chlorine, bromates, and peroxides, which have been banned in Europe and many other countries since the early 1990s. The reason is that these chemicals may cause cancer and were never really intended to be eaten in the first place.
After reviewing the considerable amount of research that's been done, we believe the answer is: It's safe. Although some types of plastic have been found to release undesirable chemicals into food, especially under high heat or acidic conditions, the bags that we use for sous vide cooking are not among those plastics.
One common #7 plastic is polycarbonate, a shatter-resistant material used in things like baby bottles and reusable water bottles. Polycarbonates readily leach a toxic compound called bisphenol-a (BPA) into food and drink.
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