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EC number: 240-539-0 | CAS number: 16484-77-8
- Life Cycle description
- Uses advised against
- Endpoint summary
- Appearance / physical state / colour
- Melting point / freezing point
- Boiling point
- Density
- Particle size distribution (Granulometry)
- Vapour pressure
- Partition coefficient
- Water solubility
- Solubility in organic solvents / fat solubility
- Surface tension
- Flash point
- Auto flammability
- Flammability
- Explosiveness
- Oxidising properties
- Oxidation reduction potential
- Stability in organic solvents and identity of relevant degradation products
- Storage stability and reactivity towards container material
- Stability: thermal, sunlight, metals
- pH
- Dissociation constant
- Viscosity
- Additional physico-chemical information
- Additional physico-chemical properties of nanomaterials
- Nanomaterial agglomeration / aggregation
- Nanomaterial crystalline phase
- Nanomaterial crystallite and grain size
- Nanomaterial aspect ratio / shape
- Nanomaterial specific surface area
- Nanomaterial Zeta potential
- Nanomaterial surface chemistry
- Nanomaterial dustiness
- Nanomaterial porosity
- Nanomaterial pour density
- Nanomaterial photocatalytic activity
- Nanomaterial radical formation potential
- Nanomaterial catalytic activity
- Endpoint summary
- Stability
- Biodegradation
- Bioaccumulation
- Transport and distribution
- Environmental data
- Additional information on environmental fate and behaviour
- Ecotoxicological Summary
- Aquatic toxicity
- Endpoint summary
- Short-term toxicity to fish
- Long-term toxicity to fish
- Short-term toxicity to aquatic invertebrates
- Long-term toxicity to aquatic invertebrates
- Toxicity to aquatic algae and cyanobacteria
- Toxicity to aquatic plants other than algae
- Toxicity to microorganisms
- Endocrine disrupter testing in aquatic vertebrates – in vivo
- Toxicity to other aquatic organisms
- Sediment toxicity
- Terrestrial toxicity
- Biological effects monitoring
- Biotransformation and kinetics
- Additional ecotoxological information
- Toxicological Summary
- Toxicokinetics, metabolism and distribution
- Acute Toxicity
- Irritation / corrosion
- Sensitisation
- Repeated dose toxicity
- Genetic toxicity
- Carcinogenicity
- Toxicity to reproduction
- Specific investigations
- Exposure related observations in humans
- Toxic effects on livestock and pets
- Additional toxicological data
Monitoring data
Administrative data
- Endpoint:
- monitoring data
- Type of information:
- experimental study
- Adequacy of study:
- supporting study
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- study well documented, meets generally accepted scientific principles, acceptable for assessment
Data source
Reference
- Reference Type:
- publication
- Title:
- Leaching of phenoxylalkanoic acid herbicides from farmland.
- Author:
- Felding G.
- Year:
- 1 995
- Bibliographic source:
- The Science of the Total Environment 168: 11-18.
Materials and methods
Test guideline
- Qualifier:
- no guideline followed
- Principles of method if other than guideline:
- The content of phenoxyalkanoic acid herbicides were measured over a 2-year period in drainage water from three clayey soils in Denmark.
- GLP compliance:
- not specified
- Type of measurement:
- concentration at contaminated site
- Media:
- ground water
Test material
- Reference substance name:
- Mecoprop
- EC Number:
- 230-386-8
- EC Name:
- Mecoprop
- Cas Number:
- 7085-19-0
- Molecular formula:
- C10H11ClO3
- IUPAC Name:
- 2-(4-chloro-2-methylphenoxy)propanoic acid
- Test material form:
- not specified
Constituent 1
Study design
- Details on sampling:
- - Geographic coordinates: Suitable sites for study had the following requirements: a flat, temporarily saturated clayey soil which had been sprayed with 2,4-D, dichlorprop, MCPA, and the test material. These criteria led to the selection of three fields all situated on a glacier deposit, one in south Zealand (Gyldenholm, 55°21'N 11°28' E), one in north Lolland (Blans, 54°51'N 11°27'E) and one in north east Falster (Falkerslev, 54°51'N 12°02'E).
At three sites each field, soil from the upper 140 cm of the soil profile was sampled with a soil auger. The content of organic carbon in the plough layer was about 1 %.
- Known emission sources near sampling site: Applications of the test material at the three sites:
Blans (test material ester): 1.644 kg a.i./ha (Autumn 1986), 1.250 kg a.i./ha (Spring 1990)
Falkerslev (test material ester): 1.918 kg a.i./ha (Spring 1985)
Falkerslev (test material salt): 1.500 kg a.i./ha (Spring 1989)
Gyldenholm (test material ester): 0.840 kg a.i./ha (Autumn 1987), 0.336 kg a.i./ha (Autumn 1989), 0.384 kg a.i./ha (Autumn 1990)
- Sampling: Water samples were collected from three stainless steel sampling tubes at each site. The water was sampled between 1 and 1.25 m below the soil surface. When the soil became saturated in winter, water samples were collected from the tubes.
The water samples were analysed for the parent phenoxyalkanoic acids.
Results and discussion
Concentration
- Country:
- Denmark
- Location:
- Falkerslev
- Substance or metabolite:
- substance
- Conc.:
- 0.34 µg/L
- Remarks on result:
- other: maximum conc recorded
- Details on results:
- The total number of water samples was 65
pH and nitrate content of water samples:
- The pH of the water sampled at Blans varied from 6.7 to 7.8 and the nitrate content varied from 25 to 100 mg/L.
- At Falkerslev, pH varied from 6.9 to 7.9 and the nitrate content varied from 10 to 50 mg/L.
- At Gyldenholm, pH varied from 6.8 to 7.9 and the nitrate content varied from 10 to 100 mg/L.
Analysed level of test material in water samples:
- Blans: The test material formulated as an ester was used at locality Blans in autumn 1986. The hydrolysed compound was only seen in very low concentrations (0.014 - 0.040 µg/L) with the exception of the water sampled in February 1990. In spring 1990, test material (ester) was used again; water samples taken in December 1990 showed a very low content of the hydrolysed compound.
- Falkerslev: In spring 1985, the test material formulated as an ester was applied at Falkerslev. Water samples taken in November 1988 showed only a low concentration of test material acid (0.082 µg/L). The test material formulated as a salt was applied in April 1989; water sampled in December 1990 contained up to 0.344 µg/L of test material acid. Four months later, the test material concentration was low again.
- Gyldenholm: In autumn 1987, 1989 and 1990, the test material formulated as an ester was applied at Gyldenholm. Test material acid was not found in the water samples during this period.
Concentrations above 0.1 µg/L:
- Three out of the four water samples contained test material in concentrations > 0.1 µg/L derived from the spring treatment at Falkerslev.
Any other information on results incl. tables
Concentration of the Test Material.
Location |
Sampling Date |
Tube |
Concentration µg/L |
Blans |
19 December 1988 |
1 |
NR |
2 |
NA |
||
3 |
NA |
||
13 February 1989 |
1 |
NA |
|
2 |
NR |
||
3 |
NR |
||
20 December 1989 |
1 |
NR |
|
2 |
< 0.01 |
||
3 |
< 0.01 |
||
23 January 1990 |
1 |
< 0.02 |
|
2 |
NR |
||
3 |
NR |
||
27 February 1990 |
1 |
0.14 (0.13; 0.14) |
|
2 |
< 0.02 |
||
3 |
< 0.02 |
||
15 November 1990 |
1 |
NR |
|
2 |
NR |
||
3 |
NR |
||
11 December 1990 |
1 |
0.02 (0.02; 0.03) |
|
2 |
0.01 (0.01; 0.02) |
||
3 |
0.04 (0.04; 0.04) |
||
28 February 1991 |
1 |
0.04 (0.04; 0.04) |
|
2 |
NR |
||
3 |
NR |
||
13 March 1991 |
1 |
NR |
|
2 |
NR |
||
3 |
NR |
||
Falkerslev |
24 November 1989 |
1 |
0.08 (0.08; 0.09) |
2 |
< 0.02 |
||
3 |
< 0.02 |
||
16 January 1989 |
1 |
NR |
|
2 |
NR |
||
3 |
NR |
||
01 March 1989 |
1 |
NR |
|
2 |
NR |
||
3 |
NR |
||
12 December 1989 |
1 |
NR |
|
2 |
NR |
||
3 |
NR |
||
23 January 1990 |
1 |
NR |
|
2 |
NR |
||
3 |
NR |
||
26 February 1990 |
1 |
NR |
|
2 |
NR |
||
3 |
NR |
||
11 December 1990 |
1 |
0.34 (0.34; 0.35) |
|
2 |
0.09 (0.09; 0.09) |
||
3 |
0.06 (0.06; 0.06) |
||
28 February 1991 |
1 |
0.13 (0.13; 0.14) |
|
2 |
0.03 (0.03; 0.03) |
||
3 |
0.21 (0.20; 0.22) |
||
13 March 1991 |
1 |
< 0.004 |
|
2 |
< 0.004 |
||
3 |
0.021 (0; 0.02) |
||
Gyldenholm |
25 January 1989 |
1 |
NR |
2 |
NR |
||
3 |
NR |
||
06 March 1989 |
1 |
NR |
|
2 |
NA |
||
3 |
NR |
||
10 January 1990 |
1 |
NR |
|
2 |
NR |
||
3 |
NR |
||
05 March 1990 |
1 |
NR |
|
2 |
NR |
||
3 |
NR |
||
09 November 1990 |
1 |
NR |
|
2 |
NR |
||
3 |
NR |
95 % Confidence limits in parentheses.
NA: Not analysed
NR: No response.
<: There is a response but it is below the detection limit.
Applicant's summary and conclusion
- Conclusions:
- The herbicide content in 17 out of 65 water samples was above 0.1 µg/L which is the maximum residue limit for drinking water in Europe. Application of the test material in the autumn did not cause the expected leaching. The highest concentrations for 2,4-D, dichlorprop, MCPA and the test material were 0.24, 0.30, 0.29 and 0.34 µg/L, respectively.
- Executive summary:
The content of the phenoxyalkanoic acid herbicides 2,4-D, dichlorprop, MCPA, and the test material was measured over a 2-year period in drainage water from three clayey soils in Denmark. The herbicide content in 17 out of 65 water samples was above 0.1 µg/L which is the maximum residue limit for drinking water in Europe. Application of the test material in the autumn did not cause the expected leaching. The highest concentrations for 2,4-D, dichlorprop, MCPA and the test material were 0.24, 0.30, 0.29 and 0.34 µg/L, respectively.
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