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 white to off-white crystalline powder. It belongs to the class of substituted guanidines where two phenyl groups are attached to the nitrogen atoms. The compound is primarily used in industrial applications, particularly in rubber manufacturing as an accelerator for vulcanization processes.

1,2-diphenylguanidine is a white to light yellow crystalline solid at room temperature with a molecular weight of 211.26 g/mol. The compound has low solubility in water but dissolves well in organic solvents such as alcohol and acetone. It has a melting point typically around 147-150°C and demonstrates thermal stability under normal conditions. The substance is odorless or has a very faint characteristic odor and maintains its crystalline structure under proper storage conditions.

1,2-diphenylguanidine is primarily used as a rubber accelerator in the vulcanization process of natural and synthetic rubbers. It serves as a secondary accelerator, often combined with other accelerators to improve curing efficiency and final product properties. The compound is also utilized in the production of rubber goods including tires, hoses, belts, and various molded rubber products. Additionally, it finds applications in some specialty chemical formulations and as an intermediate in organic synthesis processes.

1,2-diphenylguanidine requires careful handling due to its classification as Acute Tox. 4, Skin Irrit. 2, Eye Irrit. 2, and STOT SE 3. Always wear appropriate personal protective equipment including safety goggles, chemical-resistant gloves, and protective clothing. Ensure adequate ventilation in work areas and avoid generating dust. Prevent skin and eye contact, and avoid inhalation of particles. Use in well-ventilated areas or under local exhaust ventilation to minimize exposure risks.

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 store in original packaging or suitable chemical-resistant containers. The storage area should be separated from incompatible materials such as strong acids and oxidizing agents. Maintain storage temperatures below 25°C when possible and ensure the storage area is equipped with appropriate spill containment measures and emergency equipment.

In case of skin contact with 1,2-diphenylguanidine, immediately wash the affected area with plenty of soap and water for at least 15 minutes and remove contaminated clothing. 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 immediately. If swallowed, do not induce vomiting and seek immediate medical attention. In all cases of exposure, consult a physician and provide the safety data sheet.

1,2-diphenylguanidine must be disposed of in accordance with local, national, and international waste regulations as a hazardous chemical waste. Contact licensed waste disposal companies for proper treatment and disposal. Do not discharge into drains, waterways, or soil due to its Aquatic Chronic 2 classification. Contaminated packaging should also be treated as hazardous waste. Consider waste minimization through recovery or recycling where technically and economically feasible, following appropriate safety protocols.

1,2-diphenylguanidine is classified under ADR Class 6.1 (toxic substances), Packing Group III, requiring specific transport regulations for hazardous materials. Packages must be properly labeled with appropriate hazard labels and UN identification numbers. Transport vehicles must carry appropriate emergency equipment and documentation. Drivers must have valid ADR training certificates. Ensure packages are secure, properly sealed, and protected from damage during transport. Follow all applicable national and international dangerous goods transport regulations.

1,2-diphenylguanidine is subject to REACH regulation in Europe and must comply with CLP classification requirements, displaying Warning signal word and pictograms GHS07, GHS08, and GHS09. The substance is classified as Repr. 2, requiring special attention to reproductive health risks. While not currently listed as SVHC, it requires safety data sheets and appropriate risk assessments. Users must comply with occupational exposure limits and implement appropriate risk management measures according to local chemical safety regulations.

1,2-diphenylguanidine is available through OYSI, a European distributor of specialty chemicals serving industrial customers across Europe. OYSI provides technical-grade 1,2-diphenylguanidine with complete documentation including safety data sheets and certificates of analysis. As an established chemical distributor, OYSI ensures regulatory compliance and reliable supply chain management. Contact OYSI directly for pricing, availability, packaging options, and technical support to meet your specific application requirements in rubber processing and other industrial uses.