3,4-Dichlorophenyl isocyanate

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3,4-Dichlorophenyl isocyanate
IUPAC name
Other names
Isocyanic acid, 3,4-dichlorophenyl ester
3D model (JSmol)
ECHA InfoCard 100.002.752
Molar mass 188.01 g·mol−1
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
Infobox references

3,4-Dichlorophenyl isocyanate is a chemical compound used as a chemical intermediate and in organic synthesis. It is a solid, and ranges in colour from white to yellow. It is an irritant for tissues including eyes and mucous membranes, and inhalation of dust from the chemical is poisonous.[1] It can be used industrially in the preparation of triclocarban by reaction with p-chloroaniline.

It is classified as an extremely hazardous substance in the United States as defined in Section 302 of the U.S. Emergency Planning and Community Right-to-Know Act (42 U.S.C. 11002), and is subject to strict reporting requirements by facilities which produce, store, or use it in significant quantities.[2]


  1. ^ Isocyanic acid, 3,4-dichlorophenyl ester at www.chemicalbook.com.
  2. ^ "40 C.F.R.: Appendix A to Part 355—The List of Extremely Hazardous Substances and Their Threshold Planning Quantities" (PDF) (July 1, 2008 ed.). Government Printing Office. Retrieved October 29, 2011.