1,2-dimethyl-3,5-diphenylpyrazol-2-ium;methyl sulfate

1,2-dimethyl-3,5-diphenylpyrazol-2-ium;methyl sulfate is an organic chemical compound with the molecular formula C18H20N2O4S and CAS number 43222-48-6. This pyrazolium salt has a molecular weight of 360.4 g/mol and features a diphenyl-substituted pyrazole ring structure with methyl sulfate as the counterion. The compound is classified as acutely toxic and environmentally hazardous, requiring careful handling and appropriate safety measures during use.

1,2-dimethyl-3,5-diphenylpyrazol-2-ium;methyl sulfate is a solid compound at room temperature with a molecular weight of 360.4 g/mol. As an ionic compound containing a methyl sulfate anion, it typically exhibits good solubility in polar solvents like water and alcohols. The presence of the phenyl groups contributes to its aromatic character, while the pyrazolium cation structure influences its chemical reactivity and stability under various conditions.

1,2-dimethyl-3,5-diphenylpyrazol-2-ium;methyl sulfate is primarily used as a chemical intermediate in pharmaceutical and fine chemical synthesis. Its pyrazolium structure makes it valuable in organic synthesis reactions, particularly in the development of heterocyclic compounds. The compound may also find applications in materials science and as a reagent in specialized chemical processes where its unique structural properties are advantageous for specific transformations.

Safe handling of 1,2-dimethyl-3,5-diphenylpyrazol-2-ium;methyl sulfate requires appropriate personal protective equipment including safety goggles, chemical-resistant gloves, and protective clothing. Work in well-ventilated areas or under fume hoods to minimize inhalation exposure. The compound's Acute Tox. 4 classification indicates moderate toxicity, so avoid skin contact, ingestion, and inhalation. Use proper handling techniques, keep containers tightly closed, and wash hands thoroughly after use.

Store 1,2-dimethyl-3,5-diphenylpyrazol-2-ium;methyl sulfate in a cool, dry, well-ventilated area away from heat sources and incompatible materials. Keep containers tightly sealed to prevent moisture absorption and contamination. Due to its environmental hazard classification (Aquatic Acute 1, Aquatic Chronic 1), ensure storage areas have appropriate containment measures to prevent environmental release. Store away from oxidizing agents and maintain proper inventory management with clear labeling.

In case of skin contact with 1,2-dimethyl-3,5-diphenylpyrazol-2-ium;methyl sulfate, immediately wash with plenty of soap and water for at least 15 minutes. If eye contact occurs, rinse thoroughly with water for 15 minutes and seek medical attention. In case of inhalation, move to fresh air immediately. If ingested, do not induce vomiting and seek immediate medical attention. Always consult the safety data sheet for specific first aid measures and contact emergency services if necessary.

Dispose of 1,2-dimethyl-3,5-diphenylpyrazol-2-ium;methyl sulfate through licensed hazardous waste disposal facilities in accordance with local, national, and EU regulations. The compound's environmental hazard classification requires special handling to prevent aquatic contamination. Do not discharge into sewers, waterways, or soil. Contaminated packaging should also be treated as hazardous waste. Consult local authorities and waste management companies for specific disposal requirements and approved treatment methods.

Transport 1,2-dimethyl-3,5-diphenylpyrazol-2-ium;methyl sulfate according to ADR classification 6.1 (toxic substances), Packing Group III. This classification requires appropriate packaging, labeling with toxic and environmental hazard symbols, and proper shipping documentation. Use UN-approved packaging suitable for Packing Group III substances. Ensure vehicles are properly equipped and drivers are trained for hazardous materials transport. Follow all applicable international transport regulations for dangerous goods.

1,2-dimethyl-3,5-diphenylpyrazol-2-ium;methyl sulfate is subject to EU REACH regulation and CLP classification requirements. The compound is classified under GHS with pictograms GHS07 and GHS09, requiring appropriate labeling and safety data sheets. It is not currently listed as a SVHC (Substance of Very High Concern). Users must comply with occupational health and safety regulations, environmental protection laws, and may need registration or notification depending on quantities handled and intended use.

1,2-dimethyl-3,5-diphenylpyrazol-2-ium;methyl sulfate is available through OYSI, a specialized European distributor of high-quality chemical products. OYSI provides reliable supply chains across Europe with proper documentation, safety data sheets, and regulatory compliance support. As a professional chemical distributor, OYSI ensures product quality, appropriate packaging, and technical support for industrial and research applications. Contact OYSI directly for availability, specifications, and pricing information.