Overview
Dichlorodiphenyl Dichloroethylene (DDY), commonly known as p,p'-DDE, is a chlorinated hydrocarbon derived from DDT. It is a persistent organic pollutant (POP) and has been widely studied due to its environmental impact. DDY is primarily used as an intermediate in chemical synthesis and as a reference standard in analytical chemistry, particularly for environmental testing. DDY is known for its stability and resistance to degradation, making it a subject of regulatory scrutiny. Despite its historical use, modern applications are limited to controlled laboratory settings and specialized industrial processes.
Physical and Chemical Properties
DDY is a white to off-white crystalline solid with a molecular weight of 318.02 g/mol. It has a density of 1.45 g/cm³ and a melting point range of 88-90°C. The compound is insoluble in water but dissolves readily in organic solvents such as acetone, benzene, and ethanol. Chemically, DDY is stable under normal conditions but may decompose when exposed to strong oxidizing agents. Its persistence in the environment is a key concern, as it can bioaccumulate in living organisms and enter the food chain.
Main Applications
DDY is primarily used as an intermediate in the synthesis of other chlorinated compounds. It serves as a reference standard in environmental testing, particularly for detecting and quantifying DDT and its metabolites in soil, water, and biological samples. In research, DDY is utilized to study the effects of persistent organic pollutants on ecosystems and human health. Its controlled use in laboratories ensures accurate calibration of analytical instruments and validation of testing protocols.
Safety and Storage
DDY is classified as harmful if swallowed or inhaled and may cause skin irritation upon contact. Proper personal protective equipment (PPE), including gloves and goggles, should be worn when handling the compound. Adequate ventilation is essential to prevent inhalation of dust or vapors. Storage conditions for DDY include keeping the compound in a cool, dry place away from light and oxidizing agents. Containers should be tightly sealed and labeled with appropriate hazard warnings to ensure safe handling and compliance with regulatory requirements.
B2B Procurement Guide
When procuring DDY, B2B buyers should prioritize suppliers who provide detailed certificates of analysis (CoA) and material safety data sheets (MSDS). These documents verify the purity, composition, and safety data of the compound. The reference price for DDY ranges approximately from $200 to $500 per kilogram, depending on purity and supplier. Buyers should also consider logistics, including packaging and shipping conditions, to ensure the integrity of the product upon delivery.
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