Calcium Chloride

[hackman72]

I've noticed that most all calcium additives are calcium chloride. I'm not a chemist so here's my question. At work, we use 40lbs bags of anhydrous calcium chloride to heat up the concrete in the winter time so it will set and cure. The bag says "94% - 97% anhydrous calcium chloride". I did figure out that it's basically the same stuff used in "Damp Rid" and other moisture absorbers. The calcium at work is the same size pellets as the Damp Rid. Is this also the same stuff as liquid calcium additives made by Kent, SC, and others, just in a liquid form? If so, I could get 40lbs for...well...very very very cheap.

 

[dkelly]

Bulk Reef supply mentions anhydrous calcium chloride. They say to use 2 1/2* household measuring cups of crystalline calcium chloride dihydrate to a one gallon jug of RO water vs 2 cups if using anhydrous pellets.

 

[hackman72]

That's what I was thinking. What's the other 3% - 6%? We have MSDS on site because we have it in bulk. I'll check that and repost what I find.

 

[cooper9177]

I get 50 lb bags of pelitized calcium chloride at work and have been using it for years along with magnesium chloride,and sodium bicarbonate.