3-Mercaptopropan-1-ol is an important bifunctional organic intermediate containing both hydroxyl and thiol groups, widely used in fine chemicals, materials and pharmaceutical industries. In organic synthesis, it participates in addition, esterification and condensation reactions to prepare various sulfur-containing compounds and functional derivatives. In material science, it acts as a surface modifier and coupling agent for metal nanoparticles, metal oxides and semiconductor materials. The thiol group can form stable bonds with metal surfaces, while the hydroxyl group provides reactive sites for further grafting, improving material dispersibility and surface properties. It is also applied in the production of polymer additives, crosslinking agents and UV curing materials. In pharmaceutical research, it serves as a key building block for synthesizing drugs with antioxidant, detoxification and cardiovascular protection effects. Additionally, it is used as a chemical reagent in analytical chemistry and biochemical research, playing an irreplaceable role in multiple industrial and research fields.

GHS Classification: Warning Hazard Statements: H315 Causes skin irritation; H319 Causes serious eye irritation; H335 May cause respiratory irritation This compound has moderate irritancy and characteristic pungent odor. Inhalation of vapor may irritate the nose, throat and respiratory tract, leading to cough, dizziness and nausea. Direct skin contact causes redness, itching and discomfort; prolonged exposure may trigger dermatitis. Splashing into eyes results in severe stinging, tearing and conjunctival injury. It can be oxidized by air to form disulfides, and reacts violently with strong oxidants. Operators must work in a well-ventilated fume hood, wearing nitrile gloves, chemical goggles and protective masks. Avoid inhalation, skin and eye contact. In case of contact, rinse skin with plenty of soapy water immediately, and flush eyes with running water for at least 15 minutes. Store separately from oxidants, acids and food chemicals. Dispose of waste strictly in accordance with hazardous waste regulations to prevent air and water pollution.