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

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1,2,4,5-Tetrachloro-3-nitrobenzene
Tecnazen.svg
Names
IUPAC name
1,2,4,5-Tetrachloro-3-nitrobenzene
Other names
    • Tecnazene
    • TCNB
    • 2,3,5,6-Tetrachloronitrobenzene
Identifiers
3D model (JSmol)
ChemSpider
ECHA InfoCard 100.003.799
EC Number
  • 204-178-2
PubChem CID
UNII
  • InChI=1S/C6HCl4NO2/c7-2-1-3(8)5(10)6(4(2)9)11(12)13/h1H
    Key: XQTLDIFVVHJORV-UHFFFAOYSA-N
  • C1=C(C(=C(C(=C1Cl)Cl)[N+](=O)[O-])Cl)Cl
Properties
C6HCl4NO2
Molar mass 260.88 g·mol−1
Appearance Colorless
Odor Odorless
Density 1.862 g/cm3
Melting point 99 °C (210 °F; 372 K)
Boiling point 304 °C (579 °F; 577 K) (decomposes)
0.44 mg/L
Hazards
GHS labelling:
GHS07: Exclamation markGHS09: Environmental hazard
Danger
H302, H317, H410
P273, P280, P301+P312+P330, P302+P352
Lethal dose or concentration (LD, LC):
7.5 g/kg
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).

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.

It is used as a standard for quantitative analysis by nuclear magnetic resonance.

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


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