Overview
Glyoxime, chemically known as ethanedione dioxime, is an organic compound with the formula C2H4N2O2. It is widely recognized for its role as a chelating agent, forming stable complexes with various metal ions. The compound is typically supplied as a white to pale yellow crystalline powder and is soluble in polar solvents like water and ethanol. Glyoxime is primarily utilized in analytical chemistry for the detection and quantification of metal ions, particularly nickel and palladium. Its ability to form colored complexes makes it valuable in spectrophotometric analyses. Industrially, it also finds applications in polymer stabilization and as a intermediate in organic synthesis.
Physical and Chemical Properties
Glyoxime exhibits a molecular weight of 88.07 g/mol and decomposes at temperatures around 178-180°C. It is soluble in water, ethanol, and acetone, which facilitates its use in liquid-phase reactions. The compound's chelating properties stem from its two oxime functional groups, which can coordinate with metal ions to form five-membered rings. In solid form, glyoxime is stable under normal conditions but may decompose upon prolonged exposure to heat or light. Its solubility profile and stability in aqueous solutions make it suitable for laboratory and industrial processes requiring precise metal ion binding.
Main Applications
Glyoxime's primary application lies in analytical chemistry, where it serves as a reagent for detecting nickel and palladium ions. The resulting complexes exhibit distinct colors, enabling quantitative analysis via spectrophotometry. It is also employed in polymer chemistry to stabilize materials against degradation caused by metal catalysts. In organic synthesis, glyoxime acts as a building block for heterocyclic compounds. Its derivatives are explored in pharmaceuticals and agrochemicals. Industrial users value its cost-effectiveness and specificity in metal ion sequestration processes.
Safety and Storage
Glyoxime may cause mild skin or eye irritation upon contact, necessitating the use of gloves and goggles during handling. Adequate ventilation is recommended to avoid inhalation of dust. The compound should be stored in a cool, dry environment, sealed in its original container to prevent moisture absorption or contamination. In case of spills, absorb with inert material and dispose of as hazardous waste. Avoid mixing with strong oxidizing agents, as this may lead to exothermic reactions. Always consult the Safety Data Sheet (SDS) for specific first-aid measures and regulatory information.
B2B Procurement Guide
When procuring glyoxime, prioritize suppliers who provide certificates of analysis (CoA) confirming purity (typically ≥98%). Packaging should be airtight, often in polyethylene bags within fiber drums, to ensure stability during transport. Bulk buyers should inquire about custom quantities and discounts for industrial-grade material. Key procurement considerations include lead times (commonly 2-4 weeks for international shipments), Incoterms (e.g., CIF or FOB), and compliance with regional chemical regulations (e.g., REACH in the EU). Reputable suppliers will offer technical support and batch-specific documentation.
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