Overview
Cadion, chemically known as 1-(4-Nitrophenyl)-3-(4-phenylazophenyl)triazene, is an organic compound widely used as a reagent for detecting cadmium ions. Its selective reactivity with cadmium makes it valuable in analytical chemistry, particularly in environmental and industrial testing. First synthesized in the mid-20th century, Cadion's ability to form distinct colored complexes with cadmium ions allows for qualitative and semi-quantitative analysis. It is favored for its specificity compared to other heavy metal detection methods.
Physical and Chemical Properties
Cadion appears as an orange to red crystalline powder with a molecular weight of 346.34 g/mol. It melts at approximately 160-162°C and is soluble in organic solvents like ethanol and acetone but insoluble in water. The compound's key chemical property is its ability to form a pink-red complex with cadmium ions in alkaline solutions, which is the basis for its analytical applications. This reaction is highly selective, with minimal interference from other metal ions under controlled conditions.
Main Applications
Cadion is primarily used in analytical laboratories for cadmium detection in water, soil, and industrial samples. It serves as a spot-test reagent and is incorporated into test kits for field analysis. In environmental monitoring, Cadion helps assess cadmium pollution levels. Industries such as electronics and battery manufacturing use it for quality control to ensure compliance with heavy metal regulations. Its applications also extend to academic research in coordination chemistry.
Safety and Storage
As a chemical reagent, Cadion requires careful handling. It may cause irritation upon contact with skin or eyes, and inhalation of dust should be avoided. Proper personal protective equipment (PPE) including gloves and goggles is recommended. Storage conditions are critical to maintain stability. Cadion should be kept in a tightly sealed container in a cool, dry place, protected from light and moisture. Shelf life typically ranges from 1-2 years when stored correctly.
B2B Procurement Guide
When sourcing Cadion for industrial or laboratory use, prioritize suppliers with ISO certifications or GMP compliance for consistent quality. Key specifications to verify include purity (typically 95-98% for analytical use), CAS number, and batch-specific test reports. Consider purchasing smaller quantities first for quality validation, especially for sensitive applications. Pricing varies significantly based on purity; technical-grade Cadion is more economical for non-analytical uses. Always check for proper hazardous material documentation for international shipments.
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