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ManualsBrandsPreen ManualsKitchen10 lb. Lawn Weed Control
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Preen Lawn Weed Control Revision Date: 6/18/2015
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Routes of exposure: Ingestion, eyes (contact), skin (contact), dust inhalation
Ingestion: May irritate the digestive tract if ingested in quantity, causing nausea, vomiting and diarrhea.
Eye contact: Moderately irritating to eyes on contact.
Skin contact: May be harmful if absorbed through skin.
Sensitization The concentrated herbicide mixture has been shown to be a contact skin sensitizer in guinea pigs.
Germ cell mutagenicity No ingredients implicated.
Reproductive toxicity No ingredients implicated.
STOT - single exposure No information available
STOT - repeated exposure No information available
Chronic toxicity: Lungs-nuisance dusts
Target Organ Effects Lungs-nuisance dusts
Aspiration hazard No information available
Carcinogenicity Two of the three herbicides in this product are chlorophenoxy herbicides. The International
Agency for Research on Cancer (IARC) lists chlorophenoxy herbicides in its Group 2B (limited
evidence for Carcinogenicity in humans.) The US EPA has given the chlorophenoxy Herbicides
2,4-D, 2,4-DP, MCPP, and MCPA a Class D classification (not classifiable as to human
carcinogenicity.) More current lifetime feeding studies in rats and mice using the herbicide 2,4-D
did not show carcinogenic effects and a recent World Health Organization (WHO) review of 2,4-D
toxicology has concluded that this particular chlorophenoxy herbicide is not a carcinogen.
Toxic to aquatic life with long lasting effects.
Ecotoxicity of 2, 4-Dichlorophenoxyacetic acid (2,4-D):
Fish: 96 hour LC50: 20 mg/L (Cyprinus carpio) semi-static
Microbes: EC50 5.74 mg/l 15 min
Invertebrates: 72-hour EC50: 417.8 mg/L (Daphnia magna); 48-hour EC50: 17.6 - 32.6 mg/L (Daphnia magna) static
Plants: 120-hour EC50: 20 - 52 mg/L (Pseudokirchneriella subcapitata)
The herbicide ingredients are toxic to aquatic plants and aquatic some invertebrates. Use with care when applying
to turf areas adjacent to any bodies of water. Do not apply directly to water, or to areas where surface water is
present, or to intertidal areas below the mean high water mark. Drift and runoff from treated turf may adversely
affect aquatic organisms in adjacent bodies of water. Do not apply when weather conditions favor drift from
treated areas. Do not contaminate water when disposing of equipment washwater.
Application around a cistern or well may result in contamination of groundwater or drinking water, particularly
where soils are permeable and water table is shallow.
Persistence and degradability No information available
Bioaccumulation No information available
Other adverse effects No information available
This material, as supplied is a hazardous waste according to federal regulations (40 CFR 261).
Disposal of wastes:
This product is a hazardous waste material.