(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. It is the trans-isomer of but-2-enoic acid, also known as trans-crotonic acid. This organic compound features a double bond between the second and third carbon atoms in the chain, with the carboxyl group at one end. It has a molecular weight of 86.09 g/mol and appears as a white crystalline solid at room temperature.

(E)-but-2-enoic acid is a white crystalline solid at room temperature with a characteristic pungent, acetic acid-like odor. It has a melting point of approximately 71-74°C and a boiling point around 185°C. The compound is moderately soluble in water and highly soluble in organic solvents such as ethanol, ether, and acetone. It exhibits typical carboxylic acid properties, being acidic in nature with a pKa value of approximately 4.7.

(E)-but-2-enoic acid is primarily used as an intermediate in organic synthesis and pharmaceutical manufacturing. It serves as a building block for the production of various chemicals, including flavor compounds, fragrances, and pharmaceutical intermediates. The compound is also utilized in polymer chemistry for the synthesis of specialized resins and coatings. Additionally, it finds applications in research laboratories as a reagent for chemical reactions and analytical studies.

(E)-but-2-enoic acid should be handled with standard laboratory safety precautions despite having no specific GHS classification. Wear appropriate personal protective equipment including safety goggles, chemical-resistant gloves, and lab coats. Ensure adequate ventilation when working with this substance to avoid inhalation of vapors. Avoid contact with skin, eyes, and clothing. Work in a well-ventilated area or under a fume hood. Keep containers tightly closed when not in use and wash hands thoroughly after handling.

(E)-but-2-enoic acid should be stored in a cool, dry, well-ventilated area away from direct sunlight and heat sources. Keep containers tightly sealed to prevent moisture absorption and contamination. Store away from strong bases, oxidizing agents, and reactive metals as these may cause unwanted reactions. The storage area should be equipped with appropriate spill containment measures. Maintain storage temperatures below 25°C for optimal stability and prevent degradation of the product.

In case of skin contact with (E)-but-2-enoic acid, immediately flush the affected area with plenty of water for at least 15 minutes and remove contaminated clothing. For eye contact, rinse thoroughly with water for at least 15 minutes while holding eyelids open. If inhaled, move the person to fresh air and keep them comfortable. In case of ingestion, do not induce vomiting; rinse mouth with water. Seek medical attention if irritation persists or if large amounts were involved.

(E)-but-2-enoic acid waste must be disposed of in accordance with local, national, and international regulations. Do not discharge into drains, soil, or water bodies. Collect waste in appropriate, labeled containers and arrange for disposal through licensed waste management companies. Small laboratory quantities may be neutralized carefully with appropriate bases before disposal, following institutional waste management protocols. Always consult with your local environmental authorities for specific disposal requirements in your region.

(E)-but-2-enoic acid is classified under ADR Class 8 (Corrosive substances), Packing Group III for transportation purposes. It must be packaged in UN-approved containers suitable for corrosive materials and properly labeled with appropriate hazard markings. Transport vehicles must carry appropriate emergency equipment and documentation. Drivers must be trained in handling corrosive materials. Ensure packages are secure, upright, and protected from damage during transit. Follow all applicable national and international transport regulations.

(E)-but-2-enoic acid is subject to standard chemical regulations including REACH registration requirements for substances manufactured or imported in quantities above 1 tonne per year in the EU. It is not classified as a SVHC (Substance of Very High Concern) under REACH. The substance must comply with CLP regulation for classification, labeling, and packaging. Standard chemical safety data sheets must be provided for professional users. Local environmental and occupational health regulations may also apply depending on the intended use and quantities handled.

(E)-but-2-enoic acid is available through OYSI, a trusted European distributor of specialty chemicals serving the industrial and research markets. OYSI provides high-quality chemical products with appropriate documentation including safety data sheets and certificates of analysis. As an established European supplier, OYSI ensures compliance with local regulations and offers reliable supply chains across Europe. Contact OYSI directly for specific product grades, packaging options, and availability information for your requirements.