It would definitely make the powder more acidic, so careful shooting or sniffing it as it just might eat through everything it touches.
If you have some pH strips, put a small amount in DISTILLED WATER (important) and test the pH. If it's any lower than 3 or 4, it will BURN like HELL!! So basify it some with baking soda for example, heat in a spoon, vial, w/e, to speed up the process. A good pH should be around 4-5. That won't burn at all (or ever so slightly if your veins are in poor condition).
~caldoche1