2,3,5,6-Tetrachloropyridine(CAS: 2402-79-1)

2,3,5,6-Tetrachloropyridine is a white crystalline solid with a molecular weight of 255.01 g/mol. It is slightly soluble in water but more soluble in organic solvents. It exhibits moderate reactivity, mainly towards nucleophilic substitution reactions. The compound is stable under normal conditions but should be handled with care due to its chlorinated nature.

2,3,5,6-Tetrachloropyridine is typically synthesized by the chlorination of 2,3,5,6-tetrahydroxy pyridine using thionyl chloride. The reaction yields 2,3,5,6-tetrachloropyridine with good selectivity and moderate yield, often requiring purification steps to remove impurities.

2,3,5,6-Tetrachloropyridine is primarily used in the pharmaceutical industry for the synthesis of certain drugs. It is also utilized in the semiconductor industry for manufacturing photolithography resist materials, and in the polymer industry for the production of flame-retardant polymers. Additionally, it has applications in the sensor industry due to its potential as a chemical sensor.

When handling 2,3,5,6-Tetrachloropyridine, it is essential to wear appropriate personal protective equipment (PPE), including gloves, goggles, and a lab coat. The compound should be stored in a cool, dry place, away from heat sources and oxidizing agents. Fume hoods should be used during handling to minimize exposure. In case of a spill, it should be carefully cleaned up and disposed of according to local hazardous waste protocols. Always refer to the safety data sheet (SDS) for detailed handling instructions.