Most common one used here is Sodium Ferrocyanide : https://en.wikipedia.org/wiki/Sodium_ferrocyanide

Also used as a coating in welding among other things. And like other commentor said, a nephew of cyanide.

Now Im sure most of us will be fine, but I prefer not to eat that a few times a day. If you think that makes me foolish, be my guest.

It's also not needed, there are plenty of other sources of Iodine, and sea salt from the grinder is perfectly fine.

You can actually consume a _lot_ of cyanide without negative consequences, your body can detoxify it easily in small quantities. You can dissolve a lethal dose of cyanide in a bottle of water, and you'll be fine if you drink it in small sips over the course of a day.

Cyanide is so toxic because it has a high affinity for iron ions, so it deactivates iron-containing enzymes that are crucial for respiration. But in ferrocyanide it is _already_ combined with iron.

Ferrocyanide compounds like Prussian blue are even sometimes used as an antidotes for heavy metal poisoning.

Yeah, just because it doesn't directly harm a human in small dosis, doesn't mean it's a good idea to just add it to the daily diet of a human.

We simply don't know, and haven't research the longterm effect of small dosis on a daily intake. Especially combined with other conservatives & chemical additives in small dosis.

You can't deny there are some major diseases in the modern world on a rise and we have no idea why.

Yet here everyone always so sure that everything we're doing with food additives, pesticides and chemical processing is super safe.

There's just no need to eat these things, just eat normal food.

> We simply don't know, and haven't research the longterm effect of small dosis on a daily intake.

For cyanide? We actually do. Cassava roots contain quite a bit of it, and they are used as a staple in some places in Africa. You can indeed can get chronic poisoning, but it requires A LOT of cyanide.

Huh, why do they use that in the EU over silicates? (That was why I referenced sand btw).

Also, not sure what the relevance to iodine is?

Incidentally, iodine isn't easily sourced in some countries, due to soils that contain very little of it. My country (NZ) used to have a very real goitre problem until the introduction of iodised salt in the 1920s.

The anti caking I commonly see in salt is potassium cyanide [ferrocyanide, actually, see below].

https://en.m.wikipedia.org/wiki/Potassium_ferrocyanide

I'm sure you're aware that ferrocyanide is not the same thing as cyanide - the cyanide is bound so tightly to the iron center that it is nontoxic.

> However, like all ferrocyanide salt solutions, addition of an acid or exposure to UV light can result in the production of hydrogen cyanide gas, which is extremely toxic.

Now that does seem like a bit of a concern, doesn’t it?

It's a matter of quantity, like all things toxicity.

That is not potassium cyanide.

Yes, sorry, shouldn't post in a hurry. I amended my post. I'm not worried about the stuff at all, I buy salt with it all the time. But it's not sand, that's all I wanted to say.