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 contains both cationic pyrazolium and methyl sulfate components. It is classified as moderately toxic and environmentally hazardous, requiring careful handling and storage protocols in industrial applications.

1,2-dimethyl-3,5-diphenylpyrazol-2-ium;methyl sulfate is a crystalline solid at room temperature with a molecular weight of 360.4 g/mol. As an ionic compound containing methyl sulfate, it typically exhibits good water solubility and hygroscopic properties. The presence of phenyl groups contributes to its aromatic character, while the pyrazolium structure provides cationic properties essential for its chemical functionality.

1,2-dimethyl-3,5-diphenylpyrazol-2-ium;methyl sulfate is primarily used as a chemical intermediate and reagent in organic synthesis applications. Its pyrazolium structure makes it valuable in pharmaceutical research, dye chemistry, and as a catalyst or ionic liquid precursor. The compound may also serve specialized roles in analytical chemistry and materials science where cationic organic salts are required for specific chemical transformations.

Safe handling requires appropriate personal protective equipment including safety goggles, chemical-resistant gloves, and protective clothing due to its Acute Tox. 4 classification. Work in well-ventilated areas or under fume extraction to prevent inhalation exposure. Avoid skin and eye contact, and ensure proper hygiene practices including thorough hand washing after handling. Emergency eyewash and safety shower facilities should be readily accessible in work areas.

Store 1,2-dimethyl-3,5-diphenylpyrazol-2-ium;methyl sulfate in a cool, dry, well-ventilated area away from incompatible materials and ignition sources. Keep containers tightly sealed to prevent moisture absorption and contamination. Due to its environmental hazard classification (Aquatic Acute 1, Chronic 1), ensure secondary containment measures are in place to prevent environmental release. Store separately from strong oxidizers and reactive chemicals.

In case of skin contact, immediately remove contaminated clothing and wash affected areas thoroughly with soap and water for at least 15 minutes. For eye contact, flush immediately with clean water for 15 minutes while holding eyelids open. If inhaled, move to fresh air immediately. For ingestion, rinse mouth and seek immediate medical attention. Do not induce vomiting. Seek medical advice if symptoms persist or exposure is significant.

Disposal must comply with local, national, and international environmental regulations due to its aquatic toxicity classification. The substance should be disposed of through licensed hazardous waste contractors specialized in toxic chemical disposal. Never discharge to sewers, waterways, or soil. Contaminated packaging should also be treated as hazardous waste. Consult local authorities for specific disposal requirements and approved facilities in your region.

Transport is regulated under ADR Class 6.1 (Toxic substances), Packing Group III, indicating moderate toxicity requiring specific packaging and documentation requirements. Packages must be properly labeled with appropriate hazard markings and shipping documentation. Use UN-approved packaging suitable for Packing Group III toxic solids. Ensure compliance with carrier regulations and provide appropriate transport emergency information to shipping personnel.

The substance is subject to CLP regulation requiring GHS07 and GHS09 pictograms with "Warning" signal word due to its acute toxicity and environmental hazard properties. It falls under REACH regulation for chemical registration and safety assessment. While not currently classified as SVHC, its environmental persistence classification may trigger additional monitoring requirements. Compliance with waste regulations and transport ADR 6.1 classification is mandatory for commercial handling.

OYSI is a specialized European distributor offering 1,2-dimethyl-3,5-diphenylpyrazol-2-ium;methyl sulfate for industrial and research applications. As an established chemical supplier, OYSI provides comprehensive technical support, regulatory documentation, and reliable supply chains across European markets. Contact OYSI directly for availability, technical specifications, safety data sheets, and pricing information tailored to your specific application requirements and volume needs.