An agrochemical or agrichemical (source Wikipedia), a contraction of agricultural chemical, is a chemical product used in agriculture. In most cases, agrichemical refers to pesticides including insecticides, herbicides, fungicides and nematicides. It may also include synthetic fertilizers, hormones and other chemical growth agents, and concentrated stores of raw animal manure.
Most of the production processes required corrosives media like thionyl chloride, hydrochloric acid, sulfuric acid, phosphoric acid for which graphite material is often preferred.