MSDS
MATERIAL SAFETY DATA SHEET RM43™ 43% Glyphosate Plus Weed Preventer
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12. ECOLOGICAL INFORMATION
Ecotoxicity:
Data on Glyphosate Technical:
96-hour LC50 Bluegill: 120 mg/l Bobwhite Quail 8-day Dietary LC50: >4,500 ppm
96-hour LC50 Rainbow Trout: 86 mg/l Mallard Duck 8-day Dietary LC50: >4,500 ppm
48-hour LC50 Daphnia: 780 mg/l
Data on Imazapyr Technical:
96-hour LC50 Bluegill: >100 mg/l Bobwhite Quail 8-day Dietary LC50: >5,000 ppm
96-hour LC50 Rainbow Trout: >100 mg/l Bobwhite Quail Oral LD50: >2,150 mg/kg
48-hour EC50 Daphnia: >100 mg/l Mallard Duck 8-day Dietary LC50: >5,000 ppm
7-day EC50 Green Algae: 71 mg/l Mallard Duck Oral LD50: >2,150 mg/kg
Honey Bee
LD50:
>100 mg/bee
Environmental Fate:
In the environment, salts of glyphosate rapidly dissociate to glyphosate, which adsorbs strongly to soil
and is expected to be immobile in soil. Glyphosate is readily degraded by soil microbes to AMPA
(aminomethyl phosphonic acid) that is further degraded to carbon dioxide. Glyphosate and AMPA are
unlikely to enter ground water due to their strong adsorptive characteristics. Terrestrially-applied
glyphosate has the potential to move into surface waters through soil erosion because it may be
adsorbed to soil particles suspended in the runoff. Aquatic applications registered for certain formulations
may also result in glyphosate entering surface waters. Complete degradation is slow, but dissipation in
water is rapid because glyphosate is bound in sediments and has low biological availability to aquatic
organisms. These characteristics suggest a low potential for bioconcentration in aquatic organisms and
this has been verified by laboratory investigations of glyphosate bioconcentration in numerous marine
and freshwater organisms with and without soil. The maximum whole body bioconcentration factors for
fish were observed to be less than 1X. Bioconcentration factors for sediment dwelling mollusks and
crayfish tended to be slightly higher, but were always less than 10X. In addition, any residues
accumulated in organisms were rapidly eliminated.
Imazapyr is degraded by microbial metabolism and can be relatively persistent in soils. It has an average
half-life in soils that ranges from 2 weeks to 5 months. Half-lives tend to be shorter in forest litter and soils.
Imazapyr is water-soluble and variably binds to organic materials in the soils. Although the potential to
leach is high, leaching is limited under typical field conditions. In water, imazapyr can be rapidly degraded
by photolysis with a half-life averaging 2 days. Due to its rapid photodegradation by sunlight, water
contamination by imazapyr is generally not of concern.
13. DISPOSAL CONSIDERATIONS
Waste Disposal Method:
Pesticide wastes may be acutely hazardous. Improper disposal of excess pesticide, spray mixture, or
rinsate is a violation of Federal Law. If these wastes cannot be disposed of by use according to label
instructions, contact your State Pesticide or Environmental Control Agency, or the Hazardous Waste
representative at the nearest EPA Regional Office for guidance.
Container Handling and Disposal:
Nonrefillable Containers smaller than 5 Gallons: Nonrefillable container. Do not reuse or refill this
container. Triple rinse container (or equivalent) promptly after emptying. Triple rinse as follows: Empty
the remaining contents into application equipment or a mix tank and drain for 10 seconds after the flow
begins to drip. Fill the container 1/4 full with water and recap. Shake for 10 seconds. Pour rinsate into
application equipment or a mix tank or store rinsate for later use or disposal. Drain for 10 seconds after the
flow begins to drip. Repeat this procedure two more times. Then offer for recycling or reconditioning, or
puncture and dispose of in a sanitary landfill, or by other procedures approved by State and local
authorities. Plastic containers are also disposable by incineration, or, if allowed by State and local
authorities, by burning. If burned stay out of smoke.