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Simazine

General Information

• Simazine product names
• Chemical Class: chlorinated triazine herbicide
• Uses: controls most annual grasses and broadleaf weeds before they emerge or after removal of weed growth used for fruit and nut crops, such as apples, oranges, and almonds, in addition to corn, forestry sites and on turfgrass (residential and comerically grown) industrial sites, highway medians and shoulders, railroad rights-of-way, lumberyards, petroleum tank farms; also used as an algaecide in small ornamental ponds and aquariums
• Alternatives: Agriculture, Christmas trees, weeds
• Beyond Pesticides rating: Toxic

Health Effects

• EPA Acute Toxicity Class: III (slightly toxic)
• Cancer: Not documented
• Endocrine Disruption: Yes (36)
• Reproductive Effects: Yes (29)
• Neurotoxicity: Not documented
• Kidney/ Liver Damage: Yes (4)
• Sensitizer/ Irritant: Not documented
• Birth/ Developmental Defects: Yes (8)

Environmental Effects

• Detected in Groundwater: Frequently (37)
• Detected in Streams: Frequently (37)
• Potential Leacher: Yes (8)
• Toxic to Birds: Not documented
• Toxic to Fish/ Aquatic Organisms: Yes (8)
• Toxic to Bees: Not documented
• Toxic to Mammals: Not documented
• Long-Range Transport: Not documented

Additional Information

• Regulatory Information:
  • EPA Reregistration Eligibility Decision (RED) signed (4/2006)
• Supporting information:
  • Extoxnet Simazine Factsheet (Extension Toxicology Network)
  • PAN Pesticides Database:Simazine (Pesticide Action Network)
  • Program on Breast Cancer and Environmental Risk Factors (New York State)
  • CATs: Simazine (Californians for Alternatives to Toxics)
• Key Studies: