Industrial solvents — individual substances and mixtures for diluting paints and coatings, degreasing, equipment cleaning, extraction. Nefras (petroleum solvent): C2-80/120 (solvent gasoline, BR-1), white spirit (Nefras C4-155/200). Xylene (orthoxylene, mixed): for epoxy and PU coatings. Butyl acetate: for nitrocellulose varnishes. Mixed solvents: R-4 (xylene + butyl acetate + acetone — for epoxy systems), 646, 647, 648 (for nitro varnishes). Classification by flash point and evaporation rate. Hazard class 3–4. Packaging: 200 L drums, 10–20 L cans, 1000 L IBC containers. Storage: closed warehouses, temperature ≤30°C, away from ignition sources. Solvent hazard class according to GOST 12.1.007: 3 (moderately hazardous) — white spirit, xylene; 4 (low hazard) — butyl acetate. MPC in the working area: white spirit 300 mg/m³, xylene 50 mg/m³. Disposal: regeneration by distillation or incineration. Documentation: MSDS, safety data sheet, certificate of conformity. Deliveries: tank trucks, drums.