This is "Free Flowing Grade", which means it is guaranteed to be 97% pure, or higher. This is the good stuff. I get a lot of people asking if this is good for greensand/water filtration units. The answer is a resounding YES! NO INTERNATIONAL SHIPPING. NO SHIPPING TO ALASKA OR HAWAII. Sorry, but those destinations require and airplane and we are not allowed to do that. Don't order this unless you are in the USA mainland. Potassium Permanganate is a strong oxidizing agent. CAS : 7722-64-7 - KMnO4 - 158.034 g/mol
Trustpilot
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