(Z)-but-2-enedioic acid

(Z)-but-2-enedioic acid is a dicarboxylic acid commonly known as maleic acid, characterized by its cis-configuration double bond between carbon atoms. With the molecular formula C4H4O4 and CAS number 110-16-7, this compound has a molecular weight of 116.07 g/mol. It is classified as a hazardous substance with moderate toxicity and irritant properties, requiring careful handling in industrial and laboratory applications.

(Z)-but-2-enedioic acid appears as white crystalline powder or colorless crystals at room temperature. It has a characteristic acidic odor and is highly soluble in water, forming acidic solutions. The compound exhibits good solubility in polar organic solvents like alcohols and acetone. It has a melting point around 130-131°C and decomposes before boiling, making it thermally sensitive under high temperature conditions.

(Z)-but-2-enedioic acid serves as an important intermediate in chemical synthesis and polymer production. It is widely used in the manufacture of unsaturated polyester resins, alkyd resins, and copolymers. The compound also finds applications in the production of fumaric acid, pharmaceuticals, and agricultural chemicals. Additionally, it serves as a chemical reagent in organic synthesis and as an additive in various industrial formulations.

(Z)-but-2-enedioic acid requires careful handling due to its irritant and sensitizing properties. Workers must wear appropriate personal protective equipment including chemical-resistant gloves, safety goggles, and protective clothing. Ensure adequate ventilation in work areas and avoid generating dust. Prevent skin and eye contact, and avoid inhalation of vapors or particles. Use in well-ventilated areas or under fume hoods when processing the material.

(Z)-but-2-enedioic acid should be stored in a cool, dry, well-ventilated area away from heat sources and direct sunlight. Keep containers tightly closed and store in original packaging or compatible containers. Avoid storage near incompatible materials such as strong bases, oxidizing agents, and reducing agents. Maintain storage temperature below 25°C and protect from moisture to prevent degradation and ensure product stability.

Immediate action is required upon contact with (Z)-but-2-enedioic acid to minimize harm. For skin contact, remove contaminated clothing and wash affected area thoroughly with soap and water for at least 15 minutes. In case of eye contact, rinse immediately with clean water for 15-20 minutes and remove contact lenses if present. If inhaled, move to fresh air immediately. Seek medical attention if irritation persists or symptoms develop.

(Z)-but-2-enedioic acid waste must be disposed of according to local and national environmental regulations. The material should not be released into drains, waterways, or the environment. Collect waste in appropriate containers and arrange disposal through licensed waste management companies. Small quantities may be neutralized carefully with appropriate bases before disposal, but this should only be done by trained personnel following proper procedures.

(Z)-but-2-enedioic acid is not specifically classified under ADR regulations for dangerous goods transport, but still requires proper packaging and documentation. Use appropriate containers that are compatible with the chemical and ensure they are properly sealed and labeled. Transport should comply with general chemical transport regulations, including proper documentation, handling instructions, and emergency contact information for safe logistics operations.

(Z)-but-2-enedioic acid is regulated under European CLP regulation due to its hazard classification and requires proper labeling with GHS07 pictogram and Warning signal word. It falls under REACH regulation requiring registration for manufacture or import above certain tonnages. The substance is not currently listed as SVHC (Substance of Very High Concern), but users must comply with occupational safety regulations and provide appropriate safety data sheets.

(Z)-but-2-enedioic acid is available through OYSI, a specialized European distributor of technical chemicals. OYSI provides reliable supply of quality chemical products to industrial customers across Europe, ensuring compliance with all relevant regulations and safety standards. As an established chemical distributor, OYSI offers technical support and proper documentation including safety data sheets and certificates of analysis for professional applications.