2,3,5,6-tetrachlorobenzene-1,4-dicarbonitrile

2,3,5,6-tetrachlorobenzene-1,4-dicarbonitrile is a chlorinated aromatic compound with the molecular formula C8Cl4N2 and CAS number 1897-41-2. This chemical features a benzene ring substituted with four chlorine atoms and two nitrile groups, giving it a molecular weight of 265.9 g/mol. It is classified as a skin sensitizer and poses aquatic toxicity risks, requiring careful handling in industrial applications.

2,3,5,6-tetrachlorobenzene-1,4-dicarbonitrile is typically a solid crystalline compound at room temperature due to its highly substituted aromatic structure. The presence of four chlorine atoms and two nitrile groups makes it relatively polar, affecting its solubility characteristics. Its molecular weight of 265.9 g/mol and chlorinated structure contribute to its stability and persistence in various environments.

2,3,5,6-tetrachlorobenzene-1,4-dicarbonitrile serves as an important intermediate in organic synthesis and chemical manufacturing processes. Its structure with multiple chlorine substituents and nitrile groups makes it valuable for producing specialized chemical compounds. It is commonly used in pharmaceutical synthesis, agrochemical development, and as a building block for advanced materials requiring specific electronic or chemical properties.

2,3,5,6-tetrachlorobenzene-1,4-dicarbonitrile requires careful handling due to its skin sensitization properties (Skin Sens. 1). Always wear appropriate personal protective equipment including chemical-resistant gloves, safety goggles, and protective clothing. Work in well-ventilated areas or under fume hoods to prevent inhalation exposure. Avoid direct skin contact and ensure proper hygiene measures after handling to prevent sensitization reactions.

2,3,5,6-tetrachlorobenzene-1,4-dicarbonitrile should be stored in tightly sealed containers in a cool, dry, well-ventilated area away from heat sources and incompatible materials. Keep containers properly labeled and store separately from strong bases, reducing agents, and food products. Due to its aquatic toxicity classification, ensure storage areas have appropriate containment measures to prevent environmental release in case of spills or container failure.

Immediate skin contact with 2,3,5,6-tetrachlorobenzene-1,4-dicarbonitrile requires prompt removal of contaminated clothing and thorough washing of affected skin with soap and water for at least 15 minutes. For eye contact, flush immediately with clean water for 15 minutes while holding eyelids open. If inhaled, move to fresh air immediately. Seek medical attention if irritation persists or if sensitization symptoms develop, as this compound is classified as Skin Sens. 1.

2,3,5,6-tetrachlorobenzene-1,4-dicarbonitrile must be disposed of as hazardous waste through licensed waste management facilities due to its aquatic toxicity classification (Aquatic Acute 1, Aquatic Chronic 1). Never discharge to sewers, waterways, or soil. Contact certified hazardous waste disposal companies for proper treatment and disposal. Empty containers should also be handled as hazardous waste and disposed of according to local environmental regulations.

2,3,5,6-tetrachlorobenzene-1,4-dicarbonitrile is classified as ADR Class 9 (Miscellaneous dangerous substances), Packing Group III for transportation purposes. It must be packaged in UN-approved containers with proper labeling including GHS07 and GHS09 pictograms and 'Warning' signal word. Transport documents must include the correct shipping name, UN number, and hazard class. Vehicles must carry appropriate emergency equipment and drivers require ADR training certification.

2,3,5,6-tetrachlorobenzene-1,4-dicarbonitrile is subject to REACH regulation for registration, evaluation, and authorization in the European Union. It must comply with CLP regulation for classification, labeling, and packaging requirements, displaying GHS07 and GHS09 pictograms with 'Warning' signal word. The compound is not currently listed as a Substance of Very High Concern (SVHC), but users must still comply with occupational health and environmental protection regulations.

2,3,5,6-tetrachlorobenzene-1,4-dicarbonitrile is available through OYSI, a specialized European distributor of technical chemicals serving industrial and research customers. OYSI provides this compound with full regulatory compliance including proper CLP labeling, safety data sheets, and documentation required under REACH regulation. Professional customers can contact OYSI for technical specifications, availability, and regulatory support for their specific applications across European markets.