At least some of the bans seem overly cautious. For example looking at the first item on the list, KBrO3 aka potassium bromate used as a flour additive. KBrO3 is a demonstrated carcinogen but it converts almost completely to KBr during the baking process. Straight from the paper[1] that seems to have been the basis of the ban, "adverse effects are not evident in animals fed bread-based diets made from flour treated with KBrO3".
[1] https://www.ncbi.nlm.nih.gov/pmc/articles/PMC1567851/