1,4-dimethylnaphthalene

1,4-dimethylnaphthalene is an aromatic hydrocarbon compound with the molecular formula C12H12 and CAS number 571-58-4. It belongs to the naphthalene family, featuring two methyl groups attached to the naphthalene ring structure at positions 1 and 4. With a molecular weight of 156.22 g/mol, this organic compound is classified as hazardous due to its toxicity, aspiration hazard, and environmental impact on aquatic life.

1,4-dimethylnaphthalene is a solid aromatic compound at room temperature with characteristic naphthalene-like odor. As a hydrophobic organic molecule, it exhibits low water solubility but good solubility in organic solvents such as alcohols, ethers, and hydrocarbons. The compound appears as white to off-white crystalline solid and has typical aromatic stability due to its conjugated ring system with two methyl substituents.

1,4-dimethylnaphthalene serves primarily as a chemical intermediate in organic synthesis and pharmaceutical manufacturing. It is utilized in the production of specialty chemicals, dyes, and aromatic compounds. The substance also finds applications in research laboratories for synthetic chemistry studies and as a building block for more complex organic molecules. Its aromatic structure makes it valuable for developing various industrial chemical products.

1,4-dimethylnaphthalene requires careful handling due to its toxic and irritating properties. Workers must wear appropriate personal protective equipment including chemical-resistant gloves, safety goggles, and respiratory protection when necessary. Ensure adequate ventilation to prevent inhalation exposure. Avoid direct skin and eye contact, and never ingest the substance. Handle in designated areas away from heat sources and follow strict hygiene practices including thorough hand washing after use.

1,4-dimethylnaphthalene must be stored in tightly sealed containers in a cool, dry, well-ventilated area away from heat sources and ignition sources. Keep containers in original packaging and ensure proper labeling with hazard information. Store separately from incompatible materials such as strong oxidizing agents. Maintain storage temperature below 25°C and protect from direct sunlight. Ensure storage areas have appropriate spill containment and emergency response equipment readily available.

1,4-dimethylnaphthalene exposure requires immediate first aid measures. 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 minutes while holding eyelids open. If inhaled, move to fresh air and monitor breathing. Never induce vomiting if swallowed due to aspiration hazard. Seek immediate medical attention for all exposure incidents.

1,4-dimethylnaphthalene disposal must comply with local and national hazardous waste regulations due to its toxicity and environmental impact. The substance should be collected as hazardous chemical waste and disposed of through licensed waste management companies. Never dispose of in regular trash, pour down drains, or release into the environment. Incineration at appropriate high-temperature facilities or other approved treatment methods should be used following regulatory guidelines.

1,4-dimethylnaphthalene is classified under ADR Class 9 (Miscellaneous dangerous substances), Packing Group III for transportation. Packages must be properly labeled with appropriate hazard markings and transport documents completed according to dangerous goods regulations. Use approved packaging suitable for Class 9 substances and ensure compliance with ADR/RID requirements for road and rail transport. Carriers must be trained in dangerous goods handling and emergency procedures.

1,4-dimethylnaphthalene is regulated under various European chemical legislations including REACH and CLP regulations. It is classified with hazard classes including Acute Toxicity 4, Aspiration Toxicity 1, Eye Irritation 2, and Aquatic toxicity, requiring appropriate labeling with GHS07, GHS08, and GHS09 pictograms. The substance is not currently listed as SVHC but must comply with standard chemical safety requirements and workplace exposure limits where applicable.

1,4-dimethylnaphthalene is available through OYSI, a trusted European distributor of specialty chemicals. OYSI provides this compound to laboratories, research institutions, and industrial customers across Europe with appropriate documentation including safety data sheets and certificates of analysis. As a regulated chemical substance, purchases require compliance with applicable regulations and may involve customer verification procedures to ensure proper end-use applications and handling capabilities.