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 derivative 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 toxicological and environmental properties, requiring careful handling and appropriate safety measures during use.

1,4-dimethylnaphthalene is typically a colorless to pale yellow crystalline solid at room temperature with a characteristic aromatic odor. As an aromatic hydrocarbon, it exhibits low water solubility but good solubility in organic solvents such as alcohols, ethers, and hydrocarbons. The compound has a relatively low volatility compared to simpler aromatics and demonstrates typical naphthalene derivative properties including stability under normal conditions and resistance to oxidation.

1,4-dimethylnaphthalene is primarily used as an intermediate in organic synthesis and chemical manufacturing processes. It serves as a precursor for producing various aromatic compounds, dyes, and pharmaceutical intermediates. The compound is also utilized in research applications and as a building block for specialty chemicals. Its aromatic structure makes it valuable in the synthesis of more complex organic molecules, particularly in industries requiring specific naphthalene derivatives for advanced chemical formulations.

1,4-dimethylnaphthalene requires careful handling due to its Acute Tox. 4, Eye Irrit. 2, and Asp. Tox. 1 classifications. Essential personal protective equipment includes chemical-resistant gloves, safety goggles, and appropriate respiratory protection when ventilation is inadequate. Work should be conducted in well-ventilated areas or under fume hoods to prevent inhalation. Avoid skin and eye contact, and ensure proper grounding to prevent static electricity buildup during transfer operations.

1,4-dimethylnaphthalene should be stored in tightly sealed containers in a cool, dry, well-ventilated area away from heat sources and direct sunlight. Storage areas must be equipped with appropriate spill containment measures due to its aquatic toxicity classification. Keep away from incompatible materials such as strong oxidizing agents. Ensure storage facilities comply with local regulations for hazardous chemicals and maintain appropriate temperature control to prevent degradation or increased volatility.

In case of skin contact with 1,4-dimethylnaphthalene, immediately remove contaminated clothing and wash the affected area thoroughly with soap and water for at least 15 minutes. For eye contact, flush immediately with clean water for 15 minutes and seek medical attention due to its eye irritant properties. If inhaled, move to fresh air immediately. If ingested, do not induce vomiting due to aspiration hazard and seek immediate medical attention. Always consult safety data sheets for detailed emergency procedures.

1,4-dimethylnaphthalene disposal must comply with local and national hazardous waste regulations due to its environmental and health hazard classifications. The compound should never be discharged to sewers or the environment given its aquatic toxicity. Disposal should be conducted through licensed hazardous waste disposal facilities capable of handling organic chemicals. Incineration at appropriate high temperatures or other approved treatment methods may be required depending on local regulations and waste management infrastructure.

1,4-dimethylnaphthalene is classified as ADR Class 9 (Miscellaneous dangerous substances), Packing Group III, indicating moderate danger during transport. Transportation requires appropriate packaging according to ADR regulations, proper labeling with hazard pictograms (GHS07, GHS08, GHS09), and accompanying transport documentation. Vehicles must be equipped for chemical transport, and drivers require appropriate hazardous materials training. Ensure packages are secure and protected from damage during transit to prevent environmental contamination.

1,4-dimethylnaphthalene is subject to European REACH and CLP regulations requiring registration, classification, and labeling according to its hazard profile. While not currently listed as a Substance of Very High Concern (SVHC), it must be handled according to its harmonized classification including Acute Tox. 4, Asp. Tox. 1, Eye Irrit. 2, and aquatic toxicity categories. Companies must maintain safety data sheets, implement risk management measures, and comply with workplace exposure limits where established.

1,4-dimethylnaphthalene is available through OYSI, a European distributor specializing in technical chemical products. OYSI provides reliable supply chains across Europe with appropriate documentation including safety data sheets, certificates of analysis, and regulatory compliance information. As an established chemical distributor, OYSI ensures proper packaging, labeling, and transport documentation compliant with European regulations. Contact OYSI directly for availability, specifications, and delivery options suited to your specific requirements and location within Europe.