This industry comprises establishments primarily engaged in manufacturing basic organic chemicals (except petrochemicals, industrial gases, and synthetic dyes and pigments). Manufacturing petrochemicals from refined petroleum or liquid hydrocarbons--are classified in Industry 325110, Petrochemical Manufacturing; Manufacturing petrochemicals by refining crude petroleum--are classified in Industry 324110, Petroleum Refineries; Manufacturing organic industrial gases--are classified in Industry 325120, Industrial Gas Manufacturing; Manufacturing synthetic organic dyes and pigments--are classified in Industry 32513, Synthetic Dye and Pigment Manufacturing; Manufacturing natural glycerin--are classified in Industry 32561, Soap and Cleaning Compound Manufacturing; Manufacturing activated charcoal--are classified in Industry 32599, All Other Chemical Product and Preparation Manufacturing; Manufacturing organic insecticidal, herbicidal, fungicidal, and pesticidal preparations--are classified in Industry 325320, Pesticide and Other Agriculture Chemical Manufacturing; Manufacturing elastomers--are classified in Industry 32521, Resin and Synthetic Rubber Manufacturing; Manufacturing urea--are classified in Industry 32531, Fertilizer Manufacturing; Manufacturing coal tar crudes in integrated steel mills with coke ovens--are classified in Industry 33111, Iron and Steel Mills and Ferroalloy Manufacturing; Manufacturing coal tar crudes in coke ovens not integrated with steel mills and fuel briquettes from refined petroleum--are classified in Industry 32419, Other Petroleum and Coal Products Manufacturing; and Manufacturing natural food colorings--are classified in Industry 31194, Seasoning and Dressing Manufacturing.