(E)-but-2-enoic acid

(E)-but-2-enoic acid is an unsaturated carboxylic acid with the molecular formula C4H6O2 and CAS number 107-93-7. Also known as trans-crotonic acid, it features a double bond in the E-configuration between the second and third carbon atoms. With a molecular weight of 86.09 g/mol, this organic compound belongs to the family of butenoic acids and serves as an important intermediate in various chemical syntheses and industrial applications.

(E)-but-2-enoic acid is a crystalline solid at room temperature with a characteristic pungent odor. It exhibits good solubility in water and polar organic solvents due to its carboxylic acid functionality. The compound has a melting point around 72°C and demonstrates typical properties of unsaturated carboxylic acids, including reactivity at both the double bond and carboxyl group. Its trans-configuration provides greater stability compared to the cis-isomer.

(E)-but-2-enoic acid is primarily used as a chemical intermediate in organic synthesis and pharmaceutical manufacturing. It serves as a building block for the production of various chemicals, including polymers, resins, and specialty compounds. The substance finds applications in the synthesis of agrochemicals, fragrances, and pharmaceutical intermediates. Its unsaturated structure makes it valuable for polymerization reactions and as a precursor for more complex organic molecules in industrial processes.

(E)-but-2-enoic acid should be handled with appropriate personal protective equipment including chemical-resistant gloves, safety goggles, and protective clothing. Work in well-ventilated areas or under fume extraction to avoid inhalation of vapors. Although not classified with specific GHS hazard pictograms, treat as potentially irritating to skin and eyes. Avoid direct contact and ensure proper hygiene practices. Use non-sparking tools and equipment when handling to prevent potential ignition sources.

(E)-but-2-enoic acid should be stored in tightly sealed containers in a cool, dry, and well-ventilated area away from heat sources and incompatible materials. Keep away from strong bases, oxidizing agents, and reducing agents to prevent unwanted reactions. Store in original packaging or compatible chemical-resistant containers. Maintain storage temperatures below 25°C and protect from direct sunlight. Ensure proper labeling and inventory management according to chemical storage guidelines.

In case of skin contact with (E)-but-2-enoic acid, immediately remove contaminated clothing and rinse affected area with plenty of water for at least 15 minutes. For eye contact, flush eyes thoroughly with clean water and seek medical attention if irritation persists. If inhaled, move to fresh air immediately. In case of ingestion, do not induce vomiting and seek immediate medical attention. Always consult safety data sheets for specific first aid measures and contact emergency services if necessary.

(E)-but-2-enoic acid disposal must comply with local, national, and international waste regulations. The substance should be disposed of through licensed chemical waste disposal companies that can handle organic acids safely. Do not discharge into drains, waterways, or soil. Small quantities may be neutralized carefully under controlled conditions by qualified personnel before disposal. Always consult local environmental authorities and follow waste classification codes for proper disposal procedures and documentation.

(E)-but-2-enoic acid is classified as ADR Class 8 (corrosive substances), Packing Group III for transport purposes. This classification requires appropriate packaging, labeling, and documentation during shipment. Use UN-approved packaging suitable for corrosive liquids/solids and ensure proper hazard labels are displayed. Transport vehicles must comply with ADR regulations including appropriate placarding. Drivers require ADR certification and proper emergency equipment must be available during transport.

(E)-but-2-enoic acid is subject to standard chemical regulations including REACH registration requirements in the European Union. The substance is not classified as a Substance of Very High Concern (SVHC) and does not appear on restriction lists. However, it must comply with CLP regulation for classification, labeling, and packaging. Users must ensure proper registration status and follow occupational exposure limits where applicable. Always verify current regulatory status before use or distribution.

(E)-but-2-enoic acid is available through OYSI, a specialized European distributor of technical chemicals. OYSI provides reliable supply chains and technical support for industrial customers across Europe. The company ensures compliance with European regulations including REACH and provides proper documentation and safety data sheets. Contact OYSI directly for availability, specifications, packaging options, and delivery throughout European markets. Professional chemical distributors like OYSI ensure quality and regulatory compliance for industrial applications.