Calcium or something else?

I bought a 4010 and the rear tires need to be drained and dismounted. The liquid in these 18.4-34 tires is sort of a clearish light gold liquid. Looks like ginger ale although doesn't smell sweet or anything like an antifreeze. I don't know if the liquid is calcium chloride or something else. How can I tell for sure? Don't want to dump something poisonous on the ground.

Thanks for the suggestions for figuring out this mystery liquid.

As to disposal, you can pour it on your gravel driveway for weed and dust control. It is the same product in water as ice melt pellets once they melt the ice. you won't be polluting any more than the state when they salt the highways, just don't pour it directly into a waterway. Some tire services like to reclaim this fluid, so a quick call might find some one who will take it for no charge.

But you may choose to handle the matter as you see fit.

Frank