1,2-diphenylguanidine

1,2-diphenylguanidine is an organic chemical compound with the molecular formula C13H13N3 and CAS number 102-06-7. This guanidine derivative has a molecular weight of 211.26 g/mol and appears as a crystalline solid. It belongs to the class of substituted guanidines, characterized by two phenyl groups attached to the guanidine structure. The compound is classified as hazardous with reproductive toxicity category 2 and various health and environmental hazard classifications under the CLP regulation.

1,2-diphenylguanidine is typically a white to off-white crystalline solid at room temperature. The compound has limited solubility in water but shows better solubility in organic solvents such as alcohols and aromatic hydrocarbons. It has a molecular weight of 211.26 g/mol and contains nitrogen functional groups that can participate in hydrogen bonding. The compound is stable under normal conditions but may decompose at elevated temperatures, releasing toxic nitrogen oxides.

1,2-diphenylguanidine is primarily used as a vulcanization accelerator in the rubber industry, particularly for natural and synthetic rubber compounds. It serves as a secondary accelerator in combination with other accelerators to improve vulcanization efficiency and rubber properties. The compound is also utilized in the production of specialty chemicals and as an intermediate in pharmaceutical synthesis. Additionally, it finds applications in the manufacturing of adhesives, sealants, and certain polymer formulations where controlled cross-linking is required.

1,2-diphenylguanidine requires careful handling due to its reproductive toxicity and irritant properties. Wear appropriate personal protective equipment including nitrile gloves, safety goggles, and protective clothing to prevent skin and eye contact. Use respiratory protection in poorly ventilated areas to avoid inhalation. Handle the substance in well-ventilated areas or under local exhaust ventilation. Avoid generating dust and prevent contact with skin, eyes, and clothing. Wash hands thoroughly after handling and before eating or drinking.

1,2-diphenylguanidine should be stored in a cool, dry, well-ventilated area away from direct sunlight and heat sources. Keep containers tightly closed and protect from moisture to prevent degradation. Store away from incompatible materials such as strong oxidizing agents and acids. Maintain storage temperatures below 25°C when possible. Ensure proper labeling according to CLP regulation and restrict access to authorized personnel only. Use appropriate containment measures to prevent environmental release and follow local storage regulations for hazardous chemicals.

In case of skin contact with 1,2-diphenylguanidine, immediately remove contaminated clothing and wash the affected area thoroughly with soap and water for at least 15 minutes. For eye contact, rinse immediately with clean water for at least 15 minutes and seek medical attention. If inhaled, move the person to fresh air and monitor breathing. In case of ingestion, do not induce vomiting and seek immediate medical attention. Always consult a physician if symptoms develop and provide the safety data sheet to medical personnel.

1,2-diphenylguanidine must be disposed of as hazardous waste according to local and national regulations. The substance cannot be disposed of with regular industrial waste due to its classification as toxic and harmful to aquatic life. Contact authorized waste disposal companies specialized in chemical waste treatment. Incineration at high temperatures in approved facilities is typically the preferred disposal method. Empty containers should also be treated as hazardous waste. Consult local environmental authorities for specific disposal requirements and waste codes.

1,2-diphenylguanidine is classified under ADR as Class 6.1 (toxic substances), Packing Group III, indicating moderate toxicity during transport. The substance requires appropriate packaging according to ADR regulations, typically in UN-approved containers with proper marking and labeling. Transport documents must include the correct shipping name, UN number, hazard class, and packing group. Drivers must have appropriate training for hazardous goods transport. Ensure vehicles are properly equipped and follow prescribed transport routes when applicable.

1,2-diphenylguanidine is subject to REACH regulation requiring registration for manufacture or import above one tonne per year. The substance is classified under CLP regulation with specific hazard classifications including reproductive toxicity category 2. It is not currently listed as a Substance of Very High Concern (SVHC). Companies must provide safety data sheets and ensure proper classification and labeling. Specific national restrictions may apply for certain uses, and workplace exposure limits may be established by individual EU member states.

1,2-diphenylguanidine is available through OYSI, a European distributor of technical chemicals serving various industries across Europe. OYSI provides high-quality chemical products with proper documentation including certificates of analysis and safety data sheets. As a specialized chemical distributor, OYSI ensures compliance with European regulations including REACH and CLP. Contact OYSI directly for availability, technical specifications, packaging options, and delivery throughout Europe. Professional technical support is available to assist with product selection and application requirements.