Dichlone
Names
Preferred IUPAC name
2,3-Dichloronaphthalene-1,4-dione
Identifiers
3D model (JSmol)
ECHA InfoCard 100.003.828
UNII
  • C1=CC=C2C(=C1)C(=O)C(=C(C2=O)Cl)Cl
Properties
C10H4Cl2O2
Molar mass 227.04 g·mol−1
Appearance Yellow crystals[1]
Melting point 193 °C (379 °F; 466 K)[1]
0.1 ppm[1]
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
Infobox references

Dichlone (trade names Phygon and Quintar) is a fungicide and algicide of the quinone class. It is a general use fungicide applied to fruits, vegetables, field crops, ornamentals, and residential and commercial outdoor areas.[1] It is also used to control blue algae.[2]

Dichlone is not persistent in soil and has moderate mammalian toxicity.[2]

Dichlone can be manufactured by the chlorination and oxidation of naphthalene.[3]

Synthesis of dichlone from naphthalene

References

  1. 1 2 3 4 "Dichlone (Phygon, Quintar) Chemical Profile". Pesticide Management Education Program, Cornell Cooperative Extension.
  2. 1 2 "Dichlone". Pesticide Properties DataBase, University of Hertfordshire.
  3. ↑ Thomas A. Unger (1996). Pesticide Synthesis Handbook. p. 966. ISBN 0-8155-1853-6.
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