1,2,4,5-Tetrachloro-3-nitrobenzene

1,2,4,5-Tetrachloro-3-nitrobenzene (tecnazene) is an organic compound with the formula HC₆Cl₄NO₂. It is a colorless solid. A related isomer is 1,2,3,4-tetrachloro-5-nitrobenzene.

1,2,4,5-Tetrachloro-3-nitrobenzene

Names
IUPAC name 1,2,4,5-Tetrachloro-3-nitrobenzene
Other names Tecnazene TCNB 2,3,5,6-Tetrachloronitrobenzene
Identifiers
CAS Number	117-18-0
3D model (JSmol)	Interactive image
ChemSpider	21106573
ECHA InfoCard	100.003.799
EC Number	204-178-2
PubChem CID	8330
UNII	02X6KNJ5EE
CompTox Dashboard (EPA)	DTXSID0026098
InChI InChI=1S/C6HCl4NO2/c7-2-1-3(8)5(10)6(4(2)9)11(12)13/h1H Key: XQTLDIFVVHJORV-UHFFFAOYSA-N
SMILES C1=C(C(=C(C(=C1Cl)Cl)[N+](=O)[O-])Cl)Cl
Properties
Chemical formula	C6HCl4NO2
Molar mass	260.88 g·mol−1
Appearance	Colorless[1]
Odor	Odorless
Density	1.862 g/cm3[2]
Melting point	99 °C (210 °F; 372 K)[3]
Boiling point	304 °C (579 °F; 577 K)[3] (decomposes)
Solubility in water	0.44 mg/L[3]
Hazards
GHS labelling:
Pictograms
Signal word	Danger
Hazard statements	H302, H317, H410
Precautionary statements	P273, P280, P301+P312+P330, P302+P352
Lethal dose or concentration (LD, LC):
LD50 (median dose)	7.5 g/kg[3]
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Infobox references

It is used as a standard for quantitative analysis by nuclear magnetic resonance.^[4][5]

1,2,4,5-Tetrachloro-3-nitrobenzene is also a fungicide used to prevent dry rot and sprouting on potatoes during storage.^[6][7]