*Acetic Acid - Grocery store, avalible in 3-15% concentrations as vinegar. Has a boiling point of 118*C so it is possible to concentrate it by very gentle boiling.
*Acetone - Hardware store, used as paint thinner.
*Acetyline - Hardware and welding store, used in oxy-acetyline torches.
*Acetylsalicylic acid - Grocery store, avalible as asprin. Asprin has a binder in it to help the tablets keep their shape and to time-release. To get pure asa, dissolve the asprin in acetone, filter it, save and evaporate the liquid. The remaining crystals are pure asa.
*Aluminum - Painting store, sometimes avalible by itself. Alternatively, grinding cast aluminum parts and ball milling the grindings will produce useful aluminum.
*Ammonium - Grocery store, avalible only as an aqueous solution. Ammonia itself is a gas.
*Ammonium Nitrate - Farm supply house, used as chemical fertilizer, or in instant cold packs.
*Asprin - see acetylsalicylic acid.
*Charcoal - Gardening shop, sometimes added to soil - this kind sucks in pyro stuff. See the Projects page for instructions on how to make your own charcoal. Willow charcoal is widely considered the best for use in pyrotechnics.
*Chlorine Gas - Hardware store, mix Sani-Flush brand toilet cleaner with bleach.
*Citric Acid - Grocery store, used in 'borsch' or something and for making sour candy.
*Copper - Electrical supply or Hardware store, used in wire. Grinding copper wire and ball milling the grindings will produce copper powder.
*Dextrin - Grocery store, made by baking corn starch to remove water.
*Diesel - See gasoline.
*Gasoline - If you aren't smart enough to know this, please leave this site.
*Glycerin - Pharmacy, used as a moisturiser or something. Used in soapmaking to some extent. Look for artsy-craftsy stores maybe.
*Hexamine - Military surplus stores, used to be used in heating tablets.
*Hyrdochloric acid - Hardware stores, avalible in standard 30% concentration in some drain openers.
*Hydrogen Peroxide - Grocery store or pharmacy, used to clean wounds. Usually in 3%, sometimes 6%. It can be concentrated with gentle boiling.
*Isopropyl Alcohol - Grocery store or pharmacy, avalible in 70-91% concentrations.
*Magnesium - Camping store, in magnesium firestarter blocks. Grinding magnesium blocks and ball milling the grindings will produce very useful magnesium powder.
*Mercury - Pharmacy, the silver stuff used in thermometers. This is a really bad source, but you usually don't need alot of mercury.
*Napthaline - Hardware stores, sometimes avalible as powder, other times it is in some types of mothballs.
*Nitrous Oxide - Racing stores, used in drag racing and hot-rods.
*Nitromethane - Drag strips and race tracks, used as a racing fuel and as fuel for R/C cars/planes/etc in lower concentrations. Asking for it isn't the best idea, though, because it makes a damn powerful AN based explosive and the FBI will be on your ass. NM and also works with KNO3 to produce a crappy explosive. (Kinepack is a brand name for AN+nitromethane, but it's usually called ANNM).
*Oxalic Acid - Hardware store, used as a cleaning agent.
*Oxygen - Hardware store, used in oxy-acetyline torches. Avalible in bottles. Liquid oxygen is sometimes avalible from large suppliers like 'TriGas.'
*Phenol - Not readliy avalible, but Acetylsalicylic acid is a phenol derivitive. See Acetylsalicylic acid.
*Phosphorus, Red - Main ingredient in strike anywhere matches, get more info on your own.
*Potassium Nitrate - Hardware store or farm supply, used as stump remover and chemical fertiliser. Brand names of stump remover are Grant's and Green Light, should be a white powder with few impurities.
*Propane - Hardware and camping store, used as a fuel in torches and stoves. By the way, it's damn hard to break one of those green bottles, use a HE.
*Sodium - Don't try to electrolyse this unless you really know what you're doing and have a degree in chemistry.
*Sodium Bicarbonate - Grocery store, avalible as baking soda.
*Sodium Hyrdoxide - Hardware store, avalible as crystals in some drain openers. Also known as lye.
*Sulfur - Gardening store, avalible as fertilizer. More pure sulfur may be found as fungicide or pesticide dust.
*Sulfuric Acid - Hardware store, avalible in 90-96% concentrations as drain opener.
*Toluene - Hardware store, avalible as a solvent.
*Water - Are you seriously reading this sentance?
*Xylene - Hardware store, avalible as a solvent.
Note that there may be other chemicals used for this purpose at the same places of supply. Please make sure you know what you're buying.