Dichloromethylbenzene

Dichloromethylbenzene is an aromatic organochlorine compound with the molecular formula C7H6Cl2 and CAS number 98-87-3. This chemical consists of a benzene ring substituted with two chlorine atoms and one methyl group, resulting in a molecular weight of 161.03 g/mol. It belongs to the family of chlorinated toluenes and is classified as a hazardous substance with multiple health and safety concerns including carcinogenic potential and acute toxicity.

Dichloromethylbenzene is typically a colorless to pale yellow liquid at room temperature with a characteristic aromatic odor. As an aromatic chlorinated compound, it exhibits low water solubility but good solubility in organic solvents such as alcohols, ethers, and hydrocarbons. The presence of two chlorine substituents significantly affects its physical properties compared to toluene, including higher density and boiling point due to increased molecular weight and intermolecular forces.

Dichloromethylbenzene serves primarily as a chemical intermediate in organic synthesis and pharmaceutical manufacturing. It is commonly used in the production of dyes, pigments, and other aromatic compounds where selective chlorination patterns are required. The compound also finds applications in research laboratories for synthetic chemistry work and as a building block for more complex molecular structures. Its specific substitution pattern makes it valuable for targeted chemical transformations.

Dichloromethylbenzene requires strict safety protocols including chemical-resistant gloves, safety goggles, and protective clothing to prevent skin and eye contact. Work must be conducted in well-ventilated areas or under fume hoods due to its acute toxicity and potential carcinogenic properties. Respiratory protection may be necessary when ventilation is inadequate. Avoid contact with skin, eyes, and inhalation of vapors. Emergency eyewash stations and safety showers should be readily accessible.

Dichloromethylbenzene must be stored in tightly sealed containers in a cool, dry, well-ventilated area away from heat sources and incompatible materials. Storage areas should be equipped with appropriate containment measures for spill control. Keep away from strong oxidizing agents and bases that may react with the compound. Secondary containment is recommended to prevent environmental contamination. Storage facilities should comply with local regulations for hazardous chemicals.

Dichloromethylbenzene exposure requires immediate action depending on the contact route. For skin contact, remove contaminated clothing and wash thoroughly with soap and water for at least 15 minutes. In case of eye contact, flush immediately with clean water for 15-20 minutes and seek medical attention. If inhaled, move to fresh air immediately. For ingestion, do not induce vomiting and seek immediate medical attention. Always consult a physician after significant exposure.

Dichloromethylbenzene disposal must comply with local, national, and EU waste regulations as a hazardous substance. The compound cannot be disposed of in regular waste streams and requires treatment by licensed hazardous waste disposal facilities. Incineration at high temperatures in approved facilities is typically the preferred method. Empty containers may also require special handling as hazardous waste. Always consult local environmental authorities for specific disposal requirements and approved waste management companies.

Dichloromethylbenzene is classified under ADR as Class 6.1 (toxic substances), Packing Group II, requiring specific transport regulations. Packages must be properly labeled with appropriate hazard symbols and UN identification numbers. Transport vehicles need placarding and drivers require ADR certification for dangerous goods. Shipping documentation must include proper shipping names and emergency response information. Only authorized carriers experienced in hazardous material transport should handle shipments.

Dichloromethylbenzene falls under EU REACH regulation requiring registration for manufacture or import above one tonne annually. The substance is classified under CLP regulation with multiple hazard classifications including carcinogenicity category 2 and acute toxicity. Companies must maintain safety data sheets and ensure proper classification, labeling, and packaging. While not currently listed as SVHC, its carcinogenic properties mean regulatory status may evolve, requiring ongoing compliance monitoring.

Dichloromethylbenzene is available through OYSI, a specialized European distributor of technical chemicals serving industrial and research customers. OYSI provides comprehensive documentation including safety data sheets, certificates of analysis, and regulatory compliance information required for this hazardous substance. As an established chemical distributor, OYSI ensures proper handling, packaging, and transport according to ADR regulations while supporting customers with technical expertise and regulatory guidance throughout Europe.