2,5-Dichloronitrobenzene

2,5-Dichloronitrobenzene (CAS 89-61-2) is an aromatic nitro compound carrying two chlorine substituents on a nitrobenzene ring. It is also referenced under the names 1-Nitro-2,5-dichlorobenzene, 2-Nitro-1,4-dichlorobenzene, Nitro-p-Dichlorobenzene, and NSC 406125. No assigned E-code applies to this substance.

In pharmaceutical synthesis, 2,5-Dichloronitrobenzene serves as a key building block for active pharmaceutical ingredient intermediates, where its electrophilic aromatic character enables selective nucleophilic substitution at defined ring positions. It also functions as a polymerization initiator in specialty polymer systems and finds application in printing and packaging chemistry as a reactive precursor in pigment and dye intermediate production.

This material is supplied under REACH compliance for the European market and is available in standard commercial grades suited to industrial synthesis workflows. Procurement teams should confirm applicable packaging formats and lot documentation directly with the supplier to meet internal quality and regulatory requirements.