To kill the stump, drill some holes in it and pour in some Roundup.
This will kill the stump and inhibit the growth of shoots, spouts, etc.
To remove the stump chemically, just phone a few big box stores
and garden centers and tell them what you are attempting. Stump
removal chemicals are readily available. Most contain potassium
nitrate plus a bit of inhibitor which intentionally makes the product
rather useless for pyrotechnics. Just follow the directions on the
package, which should usually advise you to drill holes, pour in the
chemical along with hot water, allow it to soak in for days or weeks,
then pour kerosene in the holes, and finally to burn the stump. Don't
forget to check with local authorities to see if you need a fire permit
for the burning.
Any nitrate will work and if you've got a particularly large stump then
you can check for other sources of potassium nitrate, such as some
particular versions of "KPower" fertilizer.
Any recommended brands to search for available at the big box stores?
If not how about garden centers?