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Chemical product profile

HONGKUN / PRODUCT DIRECTORY

2,3,4-Trichloronitrobenzene | CAS 17700-09-3

The contiguous chlorine pattern of this nitroaromatic feedstock underpins published aclonifen routes, making positional-isomer separation and precursor carryover more informative procurement checks than total chlorine or nominal molecular mass.

CAS17700-09-3
Molecular formulaC6H2Cl3NO2
Molecular weight226.4 g/mol

Product overview

Three adjacent chlorines surround one side of the nitrobenzene ring in this defined aromatic intermediate. The names 2,3,4-trichloronitrobenzene and 1,2,3-trichloro-4-nitrobenzene describe the same connectivity under different numbering conventions. They must be distinguished from other trichloronitrobenzene isomers, which share a molecular formula but can enter different substitution chemistry. This substitution pattern is used in published aclonifen synthesis routes. Procurement should consequently focus on evidence that the analytical method resolves the intended isomer and relevant nitration congeners. Unreacted trichlorobenzene, residual process solvents and any acidity requirement should be considered according to the actual manufacturing and receiving processes.

Chemical identity

Chemical name
2,3,4-Trichloronitrobenzene
CAS number
17700-09-3
Molecular formula
C6H2Cl3NO2
Molecular weight
226.4 g/mol

Application context

Published aclonifen routes use this trichloronitrobenzene upstream of a dichloronitroaniline and the phenoxy-containing structure. Alternative sequences change the order of ether formation and amination, while retaining the need for the correct starting substitution pattern. Specify a method resolving positional nitration isomers and relevant residual trichlorobenzene. Select solvent and acidity controls against the source process and receiving reaction.

Chemistry and synthetic role

The nitro group and chlorinated aromatic framework enable the documented substitution sequence. Numbering from the nitro group or from the chlorine array changes the name presentation, not this molecule’s connectivity.

Quality review

Resolve trichloronitrobenzene isomers

Confirm the method distinguishes the 2,3,4 pattern from other nitration regioisomers sharing its formula.

Quantify residual trichlorobenzene

Where relevant to the source route, agree a specific precursor test rather than absorbing all peaks into a total-purity statement.

Review process residues

Select residual-solvent and acidity checks from the proposed process and the needs of the next substitution stage.

Preparing a specification

Name the 2,3,4-trichloronitrobenzene isomer and CAS 17700-09-3; provide required chromatographic resolution, assay basis and limits for identified nitration congeners or precursor carryover. Agree process-residue tests where justified.

Packaging and storage

Confirm packaging format, net weight and transport arrangements for the selected grade, order quantity and destination. Request the applicable SDS and label to establish storage and handling conditions.

Documentation

Request the proposed specification, batch COA and current SDS. Confirm availability of the identity data and analytical methods relevant to the checks above; documents depend on the selected manufacturer and grade.

Procurement questions

Does 1,2,3-trichloro-4-nitrobenzene mean the same compound?

Yes. It is an alternative numbering of the same connectivity.

Can molecular weight exclude another nitration isomer?

No. Positional isomers share the formula and require structural or chromatographic discrimination.

Is the material aclonifen?

No. It is an upstream compound in published aclonifen preparation.

Technical sources
  1. PubChem CID 28697 — identity property recordNCBI / PubChem
  2. 2,3,4-Trichloronitrobenzene T1197Tokyo Chemical Industry
  3. CN115353458A — Method for preparing aclonifenChina National Intellectual Property Administration
  4. 2,3,4-Trichloronitrobenzene test articleNational Toxicology Program / NIEHS