3-Methylbutanal, also known as isovaleraldehyde, is an important aliphatic aldehyde with a characteristic fruity aroma. It is widely used in the flavor and fragrance industry as a key synthetic raw material for fruit, nut and wine flavorings, commonly added to food essences, beverages and tobacco products to enrich fragrance layers. In fine chemical synthesis, it serves as a vital intermediate for manufacturing alcohols, acids, amines and heterocyclic compounds via reduction, oxidation and condensation reactions. It is also applied in the production of rubber additives, pharmaceutical intermediates and agricultural chemicals. Additionally, it acts as a solvent and analytical reagent in laboratory research. Thanks to its active chemical properties and unique odor characteristics, this compound plays an irreplaceable role in flavors, organic synthesis and related industrial fields.

GHS Classification: Flammable Liquid (Category 2), Skin Irritation (Category 2), Eye Irritation (Category 2A) This substance is highly flammable, and its vapor can form explosive mixtures with air. Direct contact causes skin redness and mild irritation, while splashing into eyes leads to stinging and conjunctival inflammation. Inhalation of vapor may irritate the respiratory tract, resulting in cough, dizziness and nausea. Operators must work in a well-ventilated fume hood, wearing flame-resistant gloves, safety goggles and protective clothing. Keep away from open flames, static electricity and strong oxidants. In case of skin contact, rinse with plenty of water. If eyes are exposed, flush continuously for 15 minutes and seek medical treatment. In case of fire, use dry powder or foam fire extinguishers. Store in a dedicated flammable chemical cabinet. Dispose of waste strictly in accordance with hazardous waste regulations to prevent fire hazards and environmental pollution.