2,2-Dichloropropionic acid

2,2-Dichloropropionic acid is the organic compound with the formula CH3CCl2CO2H.[1] A colorless liquid, it once was marketed under the name Dalapon as a selective herbicide used to control perennial grasses. The major use of dalapon was on food crops including sugarcane and sugar beets.[2]

2,2-Dichloropropionic acid
Names
IUPAC name
2,2-Dichloropropanoic acid
Identifiers
3D model (JSmol)
ChEBI
ChEMBL
ChemSpider
ECHA InfoCard 100.000.840
EC Number
  • 200-923-0
KEGG
RTECS number
  • UF0690000
UNII
UN number 1760
Properties
C3H4Cl2O2
Molar mass 142.96 g·mol−1
Appearance colorless oil
Density 1.40 g/cm3 (20 °C)
Melting point 13-15
Hazards
GHS pictograms
GHS Signal word Danger
H315, H318, H412
P264, P273, P280, P302+352, P305+351+338, P310, P321, P332+313, P362, P501
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
Infobox references

Regulation

Its use is no longer authorized in France.[3]

The National Institute for Occupational Safety and Health in the United States has identified it as a potential workplace hazard. The recommended time-weighted average exposure limit is 6 milligrams per cubic meter during a 10-hour workday.[4]

References

  1. Samel, Ulf-Rainer; Kohler, Walter; Gamer, Armin Otto; Keuser, Ullrich (2005). "Propionic Acid and Derivatives". Ullmann's Encyclopedia of Industrial Chemistry. Weinheim: Wiley-VCH. doi:10.1002/14356007.a22_223.
  2. "Dalapon". pmep.cce.cornell.edu. Retrieved 2016-08-31.
  3. "Retrait de l'autorisation de mise sur marché des préparations contenant du Dalapon". 18 August 2002. Archived from the original (PDF) on 18 October 2009. Retrieved 7 June 2016.
  4. "CDC - NIOSH Pocket Guide to Chemical Hazards - 2,2-Dichloropropionic acid". www.cdc.gov. Retrieved 2016-06-07.
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