The manufacture of illegal drugs usually requires specific chemicals as raw materials, reagents, or solvents, and these chemicals are also widely used in legal industries. The following is a description of the industries and related risks that some practitioners may be exposed to such chemicals.： ### 1. **Pharmaceutical and chemical industry** -**Key chemicals**: pseudoephedrine (raw material for cold medicine), ephedrine, acetic anhydride, phenylacetic acid, ether, acetone, hydrochloric acid, etc. -**Risk point**： -Employees of pharmaceutical companies may be exposed to precursor chemicals (such as pseudoephedrine) used in the synthesis of drugs. -Solvents produced or stored by chemical companies (such as acetone and ether) may be used for drug purification. ### 2. **Agriculture and fertilizer industry** -**Key chemicals**: phosphate fertilizer (containing red phosphorus), ammonia, ammonium nitrate, pesticide raw materials (such as methylamines). -**Risk point**： -The red phosphorus in fertilizers can be used to make meth. -Pesticide production may involve methylamine chemicals (such as the manufacture of methamphetamine). ### 3. **Laboratories and scientific research institutions** -**Key chemicals**: Sulfuric acid, hydrochloric acid, hydroiodic acid, sodium/potassium metals, hydrogenation reagents (such as red aluminum). -**Risk point**： -Researchers may legally purchase easy-to-make toxic chemicals due to experimental needs, but they need to prevent internal theft or abuse. - University laboratories may become hidden places for illegal synthetic drugs. ### 4. **Electronics and metallurgical industry** -**Key chemicals**: hydrofluoric acid (chip etching), red phosphorus (semiconductor material), lithium/sodium metal (battery raw material). -**Risk point**： -Etchants and reducing agents used in the electronics industry may be used in drug synthesis. -Strong acids and metal catalysts in the metallurgical industry are at risk of being reused. ### 5. **Pharmaceutical and chemical trade** -**Key chemicals**: The import, export and distribution of all easily toxic chemicals. -**Risk point**： -Employees of trading companies may be exposed to high-risk chemical orders, and they need to be wary of false trade (such as false reporting of uses). ### 6. **Medical and veterinary medicine industry** -**Key chemicals**: Precursor of narcotic drugs (such as piperidine), ketamine (veterinary anesthetic). -**Risk point**： -Medical institutions or pharmacies may store controlled drug precursors. -Ketamine in the veterinary medicine industry has been abused to make drugs. ### 7. **Cleaning and daily chemical production** -**Key chemicals**: high-concentration sulfuric acid (toilet cleaner), acetone (methyladdition water), iodine (disinfectant). -**Risk point**： -Solvents in daily chemical products may be illegally extracted for drug manufacturing. ### 8. **Food and spice industry** -**Key chemicals**: vanillin (intermediate in the synthesis of ecstasy), sulfur (preservative). -**Risk point**： -Food additives may become alternative raw materials for synthetic drugs. --- ### Preventive measures and regulatory priorities： -**Regulatory compliance**: Various countries implement inventory management of easy-to-make toxic chemicals (such as China's "Regulations on the Management of Easy-to-Make Toxic Chemicals" and the United States "Chemical Control Law"), and strict licensing and flow registration are required. -**Staff training**: Relevant industries should strengthen employees' awareness of the risk of chemical abuse and establish internal control mechanisms. -**Supply chain audit**: The trade link needs to verify the qualifications of customers to avoid the flow of chemicals into illegal channels. Exposure to chemicals in legal industries is harmless in itself, but it is necessary to be wary of a small number of criminals using professional convenience to carry out illegal activities. Strengthening supervision and industry self-discipline is the key to preventing risks.