explosive - a chemical substance that undergoes a rapid chemical change (with the production of gas) on being heated or struck

material, stuff - the tangible substance that goes into the makeup of a physical object; "coal is a hard black material"; "wheat is the stuff they use to make bread"

reactant - a chemical substance that is present at the start of a chemical reaction

Alar, daminozide - a growth-regulating chemical sprayed on fruit trees; entire crop can be harvested at one time

carrier - an inactive substance that is a vehicle for a radioactive tracer of the same substance and that assists in its recovery after some chemical reaction

bacteriacide, bactericide - any chemical agent that destroys bacteria

carbon tetrahalide - compounds composed of 1 carbon and 4 halogen molecules

fertiliser, fertilizer, plant food - any substance such as manure or a mixture of nitrates used to make soil more fertile

flux - a substance added to molten metals to bond with impurities that can then be readily removed

fumigant - a chemical substance used in fumigation

herbicide, weed killer, weedkiller - a chemical agent that destroys plants or inhibits their growth

intermediate - a substance formed during a chemical process before the desired product is obtained

fraction - a component of a mixture that has been separated by a fractional process

larvicide - a chemical used to kill larval pests

pesticide - a chemical used to kill pests (as rodents or insects)

product - a chemical substance formed as a result of a chemical reaction; "a product of lime and nitric acid"

restrainer - a chemical that is added to a photographic developer in order to retard development and reduce the amount of fog on a film

stabilizer - a chemical that is added to a solution or mixture or suspension to maintain it in a stable or unchanging state

softener - a substance added to another to make it less softer