2-methylpropanoic acid

2-methylpropanoic acid is a branched-chain carboxylic acid with the molecular formula C4H8O2 and CAS number 79-31-2. This organic compound, also known as isobutyric acid, has a molecular weight of 88.11 g/mol and belongs to the family of short-chain fatty acids. It is classified as a hazardous substance with acute toxicity properties (Acute Tox. 4) and requires appropriate handling precautions during use and storage.

2-methylpropanoic acid is a colorless liquid at room temperature with a characteristic pungent, rancid odor typical of carboxylic acids. It is miscible with water and most organic solvents due to its polar carboxyl group and relatively short carbon chain. The compound has a boiling point around 154°C and a melting point of approximately -47°C, making it liquid under normal storage and handling conditions.

2-methylpropanoic acid is primarily used as an intermediate in chemical synthesis and as a flavoring agent in the food industry. It serves as a precursor for the production of esters, salts, and other derivatives used in pharmaceuticals, perfumes, and plastic additives. The compound is also utilized in the manufacture of synthetic lubricants and as a chemical building block in various organic synthesis processes.

2-methylpropanoic acid requires careful handling due to its Acute Tox. 4 classification and GHS07 pictogram warning. Wear appropriate personal protective equipment including chemical-resistant gloves, safety goggles, and protective clothing. Ensure adequate ventilation to prevent inhalation of vapors. Avoid direct skin and eye contact, and never ingest the substance. Work in well-ventilated areas or use local exhaust ventilation to minimize exposure risks.

2-methylpropanoic acid should be stored in tightly sealed containers in a cool, dry, well-ventilated area away from heat sources and direct sunlight. Keep containers upright to prevent leakage and store away from incompatible materials such as strong bases, oxidizing agents, and metals that may react with carboxylic acids. Ensure storage areas are equipped with appropriate spill containment measures and maintain temperatures within recommended ranges.

2-methylpropanoic acid exposure requires immediate action due to its acute toxicity classification. For skin contact, immediately remove contaminated clothing and rinse affected area with plenty of water for at least 15 minutes. In case of eye contact, flush eyes with water for 15 minutes while holding eyelids open. If inhaled, move to fresh air immediately. For ingestion, do not induce vomiting and seek immediate medical attention.

2-methylpropanoic acid disposal must comply with local and national hazardous waste regulations due to its toxicity classification. The substance should be collected in appropriate containers and disposed of through licensed hazardous waste disposal facilities. Never discharge into drains, sewers, or the environment. Small quantities may be neutralized with appropriate bases under controlled conditions by qualified personnel before disposal, following all applicable environmental regulations.

2-methylpropanoic acid is classified under ADR Class 3 (flammable liquids), Packing Group III, indicating moderate danger during transport. The substance must be packaged in UN-approved containers with appropriate labeling including the flammable liquid hazard label. Transport vehicles must comply with ADR requirements including proper documentation, emergency equipment, and driver training. Ensure containers are properly secured and protected from temperature extremes during transit.

2-methylpropanoic acid is subject to various European chemical regulations including REACH registration requirements and CLP classification and labeling obligations. The substance is not currently listed as a Substance of Very High Concern (SVHC). Companies must comply with safety data sheet requirements, workplace exposure limits, and notification obligations. Users must implement appropriate risk management measures based on the substance's Acute Tox. 4 classification.

2-methylpropanoic acid is available through OYSI, a specialized European distributor of technical chemicals. OYSI provides high-quality 2-methylpropanoic acid with complete regulatory documentation including safety data sheets and certificates of analysis. As an established chemical distributor, OYSI ensures compliance with European regulations and offers reliable supply chains across European markets for industrial and professional users requiring this specialty chemical.