I am not personally familiar with this brand of ammonia. I do not see anything 'suspect' on the label but you may want to look up the MSDS for this product to see if there are any other ingredients (such as surfectants) and what the percent of ammonium hydroxide is. A simple test is to shake the bottle- if it foams, then its not aquarium suitable. Some bubbles (such as when you shake a bottle of water) is fine but it should not bubble/foam like dishsoap.
The easiest method to dose is the plug in your numbers into the calculator below and it will give you the precise dose. However, you will need the percent of ammonium hydroxide to do this. The bottle likely has contact information for the company that makes it. I would honestly only dose this tank to @2ppm unless you plan on heavily stocking it. Small tanks can sometimes be a bit trickier to cycle so it will be easier to start with a low dose and gradually work up (if need be).
Calculator