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MCPB (4-(2-Methyl-4-chlorophenoxy) butyric acid)

General Information

  • Product Names:
  • Chemical Class: Phenoxy compound
  • Uses: Registered for use on pea crops before flowering, for post-emergence control of broadleaf annual and perennial weeds including Canadian thistle, buttercup, mustard, purslane, ragweed, common lambsquarters, pigweed, smartweed, sowthistle, and morning glory.
  • Alternatives: Organic agriculture
  • Beyond Pesticides rating: Toxic

Health and Environmental Effects

  • Cancer: Possibly (3)
  • Endocrine Disruption: Not documented
  • Reproductive Effects: Not documented
  • Neurotoxicity: Yes (8)
  • Kidney/Liver Damage: Yes (8)
  • Sensitizer/ Irritant: Not documented
  • Birth/Developmental Not documented
  • Detected in Groundwater: Not documented
  • Potential Leacher: Not documented
  • Toxic to Birds: Yes (8)
  • Toxic to Fish/Aquatic Organisms: Not documented
  • Toxic to Bees: Not documented

Additional Information