2,5-Dichloro-4-nitrophenol (CAS 5847-57-4) has a molecular formula of C?H?Cl?NO? and a molecular weight of 208.00 g/mol, with chloro groups at C2/C5 and a nitro group at C4 of the phenol ring. As a key halogenated nitrophenol intermediate, it is used in synthesizing pharmaceuticals, agrochemicals, and analytical reagents. It requires sealed, cool, dry storage to prevent moisture absorption or chemical degradation, ensuring stability for subsequent reactions.