Nitrobenzene

Nitrobenzene is an aromatic organic compound with the chemical formula C6H5NO2 and CAS number 98-95-3. It consists of a benzene ring with a nitro group (-NO2) attached. This yellow, oily liquid has a molecular weight of 123.11 g/mol and possesses a distinctive almond-like odor. Nitrobenzene is classified as a hazardous substance with multiple health risks including carcinogenic and reproductive toxicity properties.

Nitrobenzene is a pale yellow, oily liquid at room temperature with a characteristic sweet almond-like odor. It has a boiling point of 210.9°C and a melting point of 5.7°C. The compound is slightly soluble in water but readily dissolves in organic solvents such as ethanol, ether, and benzene. It has a density of approximately 1.20 g/cm³ and is relatively stable under normal conditions.

Nitrobenzene is primarily used as an intermediate in the production of aniline, which is essential for manufacturing dyes, pharmaceuticals, and rubber chemicals. It serves as a precursor for various industrial chemicals including pesticides, synthetic rubber antioxidants, and pharmaceutical compounds. Additionally, nitrobenzene is used in the production of benzidine and other aromatic amines. It also finds application as a solvent in some specialized industrial processes.

Nitrobenzene must be handled with extreme caution due to its toxic properties. Always wear appropriate personal protective equipment including chemical-resistant gloves, safety goggles, and respiratory protection in well-ventilated areas or under fume hoods. Avoid skin contact and inhalation as the compound can be absorbed through skin. Use only in designated areas with proper ventilation systems and have emergency shower and eyewash stations readily available.

Nitrobenzene should be stored in tightly sealed containers in a cool, dry, well-ventilated area away from heat sources, ignition sources, and direct sunlight. Keep containers in secondary containment systems to prevent spills. Store away from incompatible materials such as strong oxidizing agents, reducing agents, and bases. Maintain storage temperatures below 25°C and ensure proper labeling according to GHS requirements with appropriate hazard warnings.

In case of skin contact with nitrobenzene, immediately remove contaminated clothing and wash affected area thoroughly with soap and water for at least 15 minutes. If inhaled, move the person to fresh air immediately and seek medical attention. For eye contact, rinse eyes with clean water for at least 15 minutes. If ingested, do not induce vomiting and seek immediate medical care. Always consult a physician after any exposure incident.

Nitrobenzene must be disposed of as hazardous waste according to local and European waste regulations. Never pour it down drains or dispose of it with regular waste. Contact licensed hazardous waste disposal companies for proper treatment and disposal. Small quantities can often be recovered through distillation for reuse. Always follow the waste classification codes and ensure proper documentation for waste tracking as required by regulatory authorities.

Nitrobenzene is classified under ADR as Class 6.1 (toxic substances), Packing Group II, requiring specific transport protocols. It must be packaged in UN-approved containers with proper labeling including the UN number and hazard placards. Transport vehicles must carry appropriate emergency equipment and documentation. Only trained personnel should handle transportation, and specific routing restrictions may apply depending on local regulations and quantity transported.

Nitrobenzene is subject to extensive European regulations including REACH registration requirements and CLP classification as Carcinogenic Category 2, Reproductive Toxicant 1B, and Acute Toxic Category 3. It requires specific risk management measures in workplace settings and is subject to occupational exposure limits. Companies using nitrobenzene must implement appropriate risk assessments and safety measures according to the chemical safety report requirements.

Nitrobenzene is available through OYSI, a specialized European distributor of technical chemicals. As a regulated substance requiring proper handling and documentation, it's essential to work with experienced suppliers who understand the regulatory requirements and can provide appropriate safety data sheets, certificates of analysis, and compliance documentation. Professional distributors like OYSI ensure proper packaging, labeling, and transportation according to European chemical regulations.