Registration Dossier

Environmental fate & pathways

Additional information on environmental fate and behaviour

Currently viewing:

Administrative data

Endpoint:
additional information on environmental fate and behaviour
Type of information:
experimental study
Adequacy of study:
other information
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
other: study well documented, meets generally accepted scientific principles

Data source

Reference
Reference Type:
publication
Title:
Factors affecting the efficacy of acrolein in irrigation channels in southern Argentina.
Author:
Bentivegna DJ and Fernandez OA
Year:
2005
Bibliographic source:
Weed Res 45, 296-302

Materials and methods

Principles of method if other than guideline:
The influence of some environmental variables on the herbicidal activity of acrolein on submerged foliage of Potamogeton pectinatus and on the dissipation of acrolein in the CORFO irrigation channels was investigated. For the dissipation studies, data were collected from 146 acrolein treatments acrolein application as herbicide for weed control) in irrigation channels during three sucessive years under different conditions. The downstream concentration of acrolein was measured as a function of time at several sites along the first 5 km from the application point.
GLP compliance:
not specified
Type of study / information:
Dissipation of acrolein from irrigation channels

Test material

Constituent 1
Chemical structure
Reference substance name:
Acrylaldehyde
EC Number:
203-453-4
EC Name:
Acrylaldehyde
Cas Number:
107-02-8
Molecular formula:
C3H4O
IUPAC Name:
acrylaldehyde
Constituent 2
Reference substance name:
acrolein
IUPAC Name:
acrolein
Constituent 3
Reference substance name:
Magnacide H
IUPAC Name:
Magnacide H
Details on test material:
- Name of test material (as cited in study report): acrolein, Magnacide H, acrylaldehyde
- Substance type: aldehyde
- Physical state: not reported
- Analytical purity: 96%
- Impurities (identity and concentrations): not reported
- Purity test date: not reported
- Lot/batch No.: not reported
- Storage condition of test material: not reported

Results and discussion

Any other information on results incl. tables

The constant rate of dissipation K was determined to be 0.235 L/h implying that the chemical will disappear in <24 h. The dissipation average per kilometer was 1.607 mg/L. This indicates that within <10 kilometres, all acrolein will be dissipated. The results showed a high correlation with water flow and the acrolein concentration, accounting for 68% of the herbicidal losses from the water system. Velocity of the water, conductivity, pH and duration of treatment had a lesser effect on the dissipation while the volume of the product applied, temperature, turbidity and level of weed infestation were unimportant.

Applicant's summary and conclusion

Conclusions:
The influence of some environmental variables on the herbicidal activity of acrolein on submerged foliage of Potamogeton pectinatus and on the dissipation of acrolein in the CORFO irrigation channels was investigated. The constant rate of dissipation K was determined to be 0.235 L/h implying that the chemical will disappear in 24 h. The dissipation average per kilometer was 1.607 mg/L. This indicates that within 10 kilometres, all acrolein will be dissipated.
Executive summary:

The influence of some environmental variables on the herbicidal activity of acrolein on submerged foliage of Potamogeton pectinatus and on the dissipation of acrolein in the CORFO irrigation channels was investigated. For the dissipation studies, data were collected from 146 acrolein treatments (acrolein application as herbicide for weed control) in irrigation channels during three sucessive years under different conditions. The downstream concentration of acrolein was measured as a function of time at several sites along the first 5 km from the application point.

The constant rate of dissipation K was determined to be 0.235 L/h implying that the chemical will disappear in 24 h. The dissipation average per kilometer was 1.607 mg/L. This indicates that within 10 kilometres, all acrolein will be dissipated. The results showed a high correlation with water flow and the acrolein concentration, accounting for 68% of the herbicidal losses from the water system. Velocity of the water, conductivity, pH and duration of treatment had a lesser effect on the dissipation while the volume of the product applied, temperature, turbidity and level of weed infestation were unimportant.