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philipkglasslast Wednesday at 4:11 PM1 replyview on HN

Ferrocyanide is not dangerous. Sodium ferrocyanide is used as an anti-caking agent in table salt. It's considered safe for this use in both the US and the EU, e.g.:

https://ec.europa.eu/food/food-feed-portal/screen/food-addit...


Replies

pjc50today at 12:35 PM

Yes, but as the article points out, the process likes to evolve free cynanide in operation.