Another source for many of the chemicals is Home Depot, in the paint section. I know you can get acetone, xylene, denatured alcohol, and such there. They usually carry muriatic (Hydrochloric) acid for swimming pool use. I have heard that Safeway carries 99% Isopropanol alcohol in the cleaning section, or you can make your own 99% from 70% very simply by "Salting Out". A Google search for salting out alcohol will give the details, but basically you add lots of salt to remove the water and skim off the alcohol from the top. This does not work for any other type of alcohol however. Methyl Alcohol (Methanol) can probably be found at Home Depot (use with caution, ingesting it will cause blindness). If you need high purity Ethyl alcohol (Ethanol) some states sell it in the liquor stores in Everclear brand (look for 190 proof, 95% alcohol). 200 proof Ethanol is available, but not easy to find since it uses hazardous chemicals to remove the last bit of water and is not meant to be consumed.
Bob