It's funny the EPA says it is not used directly on food. It is used to peel the skin off potato's in processing plants and is what gives pretzels their brown color.
I don't recommend to anyone else to use it because of the dangerous nature of the chemical if you get it on your skin/eyes. I was asking for for my own purpose as I handle it daily. I sure it would be more effective at raising pH than pellet lime pound for pound.
