MSDS

Preen Lawn Stepsaver Weed Control Plus Fertilizer 24-0-6
Revision Date: 04/10/2015
Page 5 of 8
Strong acids or alkali, or other reactive substances.
Hazardous Decomposition Products
May emit toxic fumes under fire conditions, such as Nitrogen oxides (NOx), Ammonia, Oxides of sulfur, Hydrogen
chloride and Carbon monoxide.
Product Toxicity:
Acute Oral Toxicity: >2000 mg/kg (rat)
Acute Dermal Toxicity: >2000 mg/kg (rabbit)
Acute Inhalation Toxicity: >2.07 mg/l (rat).
Routes of exposure: Ingestion, eyes (contact), skin (contact), dust inhalation
Symptoms May irritate the digestive tract if ingested in quantity, causing nausea, vomiting and diarrhea.
Sensitization Not a skin sensitizer.
Germ cell mutagenicity No information available.
Carcinogenicity for herbicides in product:
IARC: Group 2B, limited evidence for carcinogenicity in humans (for 2, 4-D)
‡
US EPA: Class D, not classifiable as to human carcinogenicity (for 2, 4-D)
‡
WHO: Not a carcinogen by WHO (for 2, 4-D)
‡
OSHA: Yes {for 2, 4-D and its analogues
‡
, and (R)-2-(4-Chloro-2-methylphenoxy)propionic acid}
‡
2, 4-Dichlorophenoxyacetic acid 2-ethylhexyl ester (2,4-D ester) is an analogue of 2,4-D. Toxicological and exposure data is
typically referenced to the related parent compound, 2,4-D, as is done here.
Carcinogenicity (other): Crystalline silica- IARC Group 1: sufficient evidence for carcinogenicity in humans
Reproductive toxicity No information available
STOT - single exposure No information available
STOT - repeated exposure No information available
Chronic toxicity Avoid repeated exposure
Target Organ Effects No information available
Aspiration hazard No information available
Key Ingredients Toxicity
Dithiopyr: Inhalation LC50 >6 mg/m
3
(rat) 4 hour
Trade Secret Ingred.: Oral LD50 >5000 mg/kg (rat); Dermal LD50 >2mL/kg (rabbit); Inhalation LC50 >590 mg/m
3
(rat) 4 hour
2,4-D is highly toxic to fish.
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)
‡
2, 4-Dichlorophenoxyacetic acid 2-ethylhexyl ester (2,4-D ester) is an analogue of 2,4-D. Toxicological and exposure data is typically
referenced to the related parent compound, 2,4-D, as is done here.
Ecotoxicity of Trade Secret Ingredient:
Fish: 96 hour LC50: 19 mg/L (Pimephales promelas) static
Invertebrates: 48-hour EC50: 0.95 mg/L (Daphnia magna);
Plants: 72-hour EC50: 2.5 mg/L (Skeletonema costatum)
Fertilizers may be harmful to aquatic life with short term effects, causing algal bloom and increased BOD,
depending on the amount released.
12. ECOLOGICAL INFORMATION
11. TOXICOLOGICAL INFORMATION