It can have up to 50 ppm fluoride !!!! The max spec on the oxide, is 150 ppm fluoride !!! The heavy metal spec is 50 ppm. I wonder how much of that is mercury.....
Probably makes a good rat poison or roach killer.
I no longer wonder why certain folks cannot control their temperments. The detrimental effects of fluoride on the body and mind are well-documented. Just take a little, very slowly, over time, and take some more, and more and more, until ......