4-tert-butylbenzoic acid

4-tert-butylbenzoic acid is an aromatic carboxylic acid with the molecular formula C11H14O2 and CAS number 98-73-7. This organic compound features a benzoic acid structure substituted with a tert-butyl group at the para position. With a molecular weight of 178.23 g/mol, it belongs to the category of substituted benzoic acids commonly used in chemical synthesis and industrial applications.

4-tert-butylbenzoic acid typically appears as a white to off-white crystalline solid at room temperature. As an aromatic carboxylic acid, it exhibits limited solubility in water but dissolves readily in organic solvents such as alcohols, ethers, and aromatic hydrocarbons. The compound has a characteristic mild aromatic odor and demonstrates thermal stability under normal storage conditions.

4-tert-butylbenzoic acid serves primarily as an intermediate in organic synthesis and pharmaceutical manufacturing. It is commonly used in the production of specialty chemicals, polymer additives, and as a building block for more complex aromatic compounds. The substance also finds applications in research laboratories for chemical synthesis and as a starting material for various chemical transformations.

4-tert-butylbenzoic acid requires careful handling due to its classification as Acute Tox. 4, Repr. 1B, and STOT RE 1. Always wear appropriate personal protective equipment including safety goggles, protective gloves, and respiratory protection when necessary. Work in well-ventilated areas or under fume extraction systems. Avoid direct contact with skin, eyes, and inhalation of dust or vapors.

4-tert-butylbenzoic acid should be stored in tightly sealed containers in a cool, dry, well-ventilated area away from heat sources and direct sunlight. Keep the substance separated from incompatible materials such as strong bases and oxidizing agents. Ensure storage areas comply with local regulations for hazardous substances and maintain proper labeling according to GHS requirements.

In case of skin contact with 4-tert-butylbenzoic acid, immediately wash the affected area with plenty of water and soap. For eye contact, rinse thoroughly with water for at least 15 minutes and seek medical attention. If inhaled, move to fresh air immediately. In case of ingestion, do not induce vomiting and seek immediate medical attention. Always consult the safety data sheet for specific first aid measures.

4-tert-butylbenzoic acid waste must be disposed of according to local and national hazardous waste regulations. The substance cannot be disposed of with regular waste due to its hazardous classification. Contact licensed waste disposal companies specializing in chemical waste management. Small quantities may be neutralized under controlled conditions by qualified personnel before disposal, following applicable environmental regulations.

4-tert-butylbenzoic acid is classified under ADR Class 9 (Miscellaneous dangerous substances), Packing Group III. Transportation requires appropriate packaging meeting UN specifications and proper hazardous goods documentation. Vehicles must carry appropriate placards and emergency information. Drivers need ADR certification for dangerous goods transport. Ensure compliance with international transport regulations for hazardous materials.

4-tert-butylbenzoic acid is subject to REACH regulation requiring registration for manufacture or import above one tonne annually. The substance falls under CLP regulation for classification and labeling with pictograms GHS07 and GHS08. While not currently listed as SVHC, its Repr. 1B classification requires compliance with reproductive toxicity restrictions and workplace exposure limits in various jurisdictions.

4-tert-butylbenzoic acid is available through OYSI, a European distributor of technical chemicals serving various industries across the continent. As a specialized chemical distributor, OYSI provides this substance with proper documentation, safety data sheets, and regulatory compliance support. Contact OYSI directly for availability, technical specifications, and delivery options tailored to your specific requirements and location within Europe.