Registration Dossier
Registration Dossier
Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.
The new ECHA CHEM database has been released by ECHA, and it now contains all REACH registration data. There are more details on the transition of ECHA's published data to ECHA CHEM here.
Use of this information is subject to copyright laws and may require the permission of the owner of the information, as described in the ECHA Legal Notice.
EC number: 609-256-3 | CAS number: 365400-11-9
Toxicity to soil microorganisms
Administrative data
Link to relevant study record(s)
- Endpoint:
- toxicity to soil microorganisms
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- 23 Mar - 20 Apr 2004
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 216 (Soil Microorganisms: Nitrogen Transformation Test)
- Version / remarks:
- adopted 21 January 2000
- Deviations:
- no
- GLP compliance:
- yes (incl. QA statement)
- Remarks:
- Ministerium fur Umwelt, Raumordnung und Landwirtschaft des Landes Nordrhein-Westfalen, Düsseldorf, Germany
- Analytical monitoring:
- no
- Vehicle:
- no
- Details on preparation and application of test substrate:
- AMENDMENT OF SOIL
- Type of organic substrate: Lucerne-grass-green meal; source: Hoeveler Kraftfutter, Langenfeld, Germany
APPLICATION OF TEST SUBSTANCE TO SOIL
- Method: Sieved soil (2 mm) was treated with either 10 g ground quartz sand/kg dry weight soil (control) or a mixture of quartz sand and the test item (0.07 mg or 0.33 mg/kg dry weight soil). The samples were mixed with pulverized lucerne-grass-green meal (5 g/kg dry weight soil) and quartz sand in 3 liter polyethylene containers by rolling on a gyrowheel mixer (Elte 650, J. Engelsmann AG, Ludwigshafen, Germany) for 15 min at 50 rpm. In separate studies it was determined that mixing substances into soils as described gives a homogeneous and reproducible distribution (Blumenstock, 1989). Since the soil was not extracted and analyzed, values given for the active ingredients are nominal.
- Test organisms (inoculum):
- soil
- Total exposure duration:
- 28 d
- Test temperature:
- 20 ± 2 °C
- Moisture:
- 40% of the maximum water holding capacity
- Details on test conditions:
- TEST SYSTEM
- Testing facility: Bayer CropScience AG
- Test container (type, material, size): 500 mL brown glass bottles and closed with parafilm.
- Amount of soil: 300 g dry weight
- No. of replicates per concentration: 3
- No. of replicates per control: 3
SOIL INCUBATION
- Method: bulk / series of individual subsamples
The soil was mixed and kept in a brown glass bottles closed with parafilm. It was held in the dark at 20 ± 2 °C and about 40% of the maximum water holding capacity (WHCmax).
SOURCE AND PROPERTIES OF SUBSTRATE (if soil)
- Geographical reference of sampling site (latitude, longitude): at a latitude of 51°4' north and a longitude of 6°55' east.
- History of site: The soil used is from Field plot F on the Bayer CropScience AG's experimental farm Laacherhof, Germany. The plot has been under grass and has not been treated with fertilizers since 1996.
- Vegetation cover: On 07 Mar 2000 the plot was plowed and then freshly planted with grass.
- Treatments with pesticides or fertilizers: Plant protection chemicals have not been used on this field since 1981.
- Accidental contamination: no
- Depth of sampling: 0-20 cm
-Soil texture "lehmiger Sand" (loamy sand)
- 2000 - 630 (µm): 4.0%
- 630 - 200 (µm): 52.5%
- 200 - 63 (µm): 21.6%
- 63 - 20 (µm): 6.9%
- 20 - 6.3 (µm): 4.3%
- 6.3 - 2.0 (µm): 4.4%
- 2.0 - 0 (µm): 6.3%
- Soil taxonomic classification: "lehmiger Sand" (loamy sand)
- pH (in water): 6.7
- Initial nitrate concentration for nitrogen transformation test (mg nitrate/kg dry weight): The loamy sand soil held 12.58 mg nitrate-N/kg dry weight soil
- Cation exchange capacity: 6.4 meq/100 g dry weight soil
- Pretreatment of soil: Sieved soil (2 mm) was treated with either 10 g ground quartz sand/kg dry weight soil (control) or a mixture of quartz sand and test item (0.07 mg or 0.33 mg/kg dry weight soil). The samples were mixed with pulverized lucerne-grass-green meal (5 g/kg dry weight soil) and quartz sand in 3 liter polyethylene containers by rolling on a gyrowheel mixer for 15 min at 50 rpm. Since the soil was not extracted and analyzed, values given for the active ingredients are nominal.
- Storage (condition, duration): stored at 4 ± 2 °C until used
- Initial microbial biomass as % of total organic C: 4.8%
DETAILS OF PREINCUBATION OF SOIL (if any): no preincubation
EFFECT PARAMETERS MEASURED (with observation intervals if applicable): Effects on non-target soil microorganisms are measured after 0, 7, 14, 28 days. Therefore the amount of Ammonium-N and Nitrate-N were determined as mg Nitrogen (N)/kg dry weight soil
VEHICLE CONTROL PERFORMED: no
RANGE-FINDING STUDY: no range-finding test was performed - Nominal and measured concentrations:
- concentrations of 0.07 mg and 0.33 mg test item/kg dry weight soil
- Reference substance (positive control):
- yes
- Duration:
- 28 d
- Dose descriptor:
- other: trigger value of 25% inhibition compared with the control
- Effect conc.:
- > 0.25 kg/ha
- Nominal / measured:
- nominal
- Conc. based on:
- test mat.
- Basis for effect:
- nitrate formation rate
- Duration:
- 28 d
- Dose descriptor:
- NOEC
- Effect conc.:
- >= 0.316 mg/kg soil dw
- Nominal / measured:
- nominal
- Conc. based on:
- act. ingr.
- Basis for effect:
- nitrate formation rate
- Remarks on result:
- other: Endpoint was not part of the report but derivable from the reported results
- Duration:
- 28 d
- Dose descriptor:
- EC10
- Effect conc.:
- > 0.316 mg/kg soil dw
- Nominal / measured:
- nominal
- Conc. based on:
- act. ingr.
- Basis for effect:
- nitrate formation rate
- Remarks on result:
- other: Endpoint was not part of the report but derivable from the reported results
- Details on results:
- The substance caused no adverse effects (difference to control <25%, OECD 216) on the soil nitrogen transformation (expressed as NO3-N-production) at the end of the 28 d incubation period. The study was performed in a field soil at concentrations up to 0.316 mg a.s./kg soil dry weight, which are equivalent to application rates up to 0.25 test item/ha.
- Results with reference substance (positive control):
- - Results with reference substance valid? yes
- Relevant effect levels: 16 g NaCI/kg dry weight soil had a distinct and long-term (> 28 days) influence on microbial mineralization of nitrogen. - Reported statistics and error estimates:
- All calculations were performed using Microsoft Excel 97. The % differences in the quantities of nitrate-N formed between control soils and treated soils were expressed as absolute values and determined as follows: ((treatment rates - control rates)/control rates) x 100 % = % difference. Rates were expressed in "mg nitrate-N/kg dry weight soil/day". Homogeneity of variances was determined by F-test (significance level 5%). Depending on the results of the F-Tests, the appropriate T-Tests were performed. In the T-Tests the mean values of nitrate-N/kg dry weight soil/time interval/day from control soils and treated soils were compared. The statistical calculations were carried out using Microsoft Excel 97 software.
- Validity criteria fulfilled:
- yes
- Remarks:
- The variation of nitrate concentrations between replicate control samples should be less than ± 15%, see Table 1 in "Any other information on results incl. tables".
- Endpoint:
- toxicity to soil microorganisms
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- 23 Mar - 20 Apr 2004
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 217 (Soil Microorganisms: Carbon Transformation Test)
- Version / remarks:
- adopted 2000
- Deviations:
- no
- GLP compliance:
- yes (incl. QA statement)
- Remarks:
- Ministerium fur Umwelt, Raumordnung und Landwirtschaft des Landes Nordrhein-Westfalen, Germany
- Analytical monitoring:
- no
- Vehicle:
- no
- Details on preparation and application of test substrate:
- AMENDMENT OF SOIL
- Type of organic substrate: 2000 mg glucose/kg dry weight soil
APPLICATION OF TEST SUBSTANCE TO SOIL
- Method: Sieved soil (2 mm) was treated with either 10 g ground quartz sand/kg dry weight soil (control) or a mixture of quartz sand and test item (0.07 mg or 0.33 mg/kg dry weight soil). The samples were mixed in 3 liter polyethylene containers by rolling on a gyrowheel mixer for 15 min at 50 rpm. Since the soil was not extracted and analyzed, values given for the active ingredients are nominal. The test item concentrations 0.05 kg and 0.25 kg test item/ha corresponded to 0.07 mg and 0.33 mg test item/kg dry weight soil were used in the test.
VEHICLE: no vehicle was used - Test organisms (inoculum):
- soil
- Total exposure duration:
- 28 d
- Test temperature:
- 20 ± 2 °C
- Moisture:
- 40% of the maximum water holding capacity
- Details on test conditions:
- TEST SYSTEM
- Testing facility: Bayer CropScience AG
- Test container: 500 mL brown glass bottle and and were closed with parafilm
- Amount of soil: 350 g dry weight
- No. of replicates per concentration: 3
- No. of replicates per control: 3
SOIL INCUBATION
- Method: Three replicates were prepared per treatment. The quantity of product was added to the soil. The soil was held in the dark at 20 ± 2 °C and about 40% of the maximum water holding capacity (WHCmax).
SOURCE AND PROPERTIES OF SUBSTRATE (if soil)
- Geographical reference of sampling site (latitude, longitude): The soil used is from Field plot F on the Bayer AG's experimental farm Laacherhof, Germany located at a latitude of 51 °4' north and a longitude of 6°55' east.
- History of site: Plant protection chemicals have not been used on this field since 1981. The plot has been under grass and has not been treated with fertilizers since 1996. On March 07, 2000 the plot was plowed and then freshly planted with grass.
- Vegetation cover: grass
- Treatments with pesticides or fertilizers: no plant protection chemicals, no fertilizers has been used for the field
- Accidental contamination: no
- Depth of sampling: 5 cm
- Soil taxonomic classification: agricultural soil
- 2000 - 630 (µm): 4.0%
- 630 - 200 (µm): 52.5%
- 200 - 63 (µm): 21.6%
- 63 - 20 (µm): 6.9%
- 20 - 6.3 (µm): 4.3%
- 6.3 - 2.0 (µm): 4.4%
- 2.0 - 0 (µm): 6.3%
- Soil classification system: loamy sand
- pH (in water): 6.7
- Initial nitrate concentration for nitrogen transformation test (mg nitrate/kg dry weight): the soil held 12.58 mg nitrate-N/kg dry weight soil and 0.67 mg ammonium-N- and 12.58 mg nitrate-N/kg dry weight soil
- Cation exchange capacity: 6.4 meq/100 g dry weight soil
- Pretreatment of soil: Soil was passed through a 2 mm sieve and was treated with either 10 g ground quartz sand/kg dry weight soil (control) or a mixture of quartz sand test item (0.07 mg or 0.33 mg/kg dry weight soil). The samples were mixed in 3 liter polyethylene containers by rolling on a gyrowheel mixer for 15 min at 50 rpm.
- Storage (condition, duration): at 4 ± 2 °C
- Initial microbial biomass as % of total organic C: 0.7%
DETAILS OF PREINCUBATION OF SOIL (if any): no additional information
EFFECT PARAMETERS MEASURED (with observation intervals if applicable): Effects on non-target soil microorganisms on day 0, and after 7,14 and 28 days of incubation based to the glucosestimulatined soil respiration
VEHICLE CONTROL PERFORMED: no
RANGE-FINDING STUDY: no range-finding test was performed - Nominal and measured concentrations:
- nominal concentrations: 0.07 mg test item/kg dry weight soil (0.05 kg test item/ha) and 0.33 mg test item/kg dry weight soil (0.25 kg test item/ha)
- Reference substance (positive control):
- yes
- Remarks:
- Sodium chloride
- Duration:
- 28 d
- Dose descriptor:
- other: Difference to the control < 25%
- Effect conc.:
- 0.07 mg/kg soil dw
- Nominal / measured:
- nominal
- Conc. based on:
- test mat.
- Basis for effect:
- respiration rate
- Remarks on result:
- other: test item had no influence on carbon transformation
- Duration:
- 28 d
- Dose descriptor:
- other: Difference to the control < 25%
- Effect conc.:
- 0.33 mg/kg soil dw
- Nominal / measured:
- nominal
- Conc. based on:
- test mat.
- Basis for effect:
- respiration rate
- Remarks on result:
- other: Test item had no influence on carbon transformation
- Duration:
- 28 d
- Dose descriptor:
- NOEC
- Effect conc.:
- >= 0.316 mg/kg soil dw
- Nominal / measured:
- nominal
- Conc. based on:
- act. ingr.
- Basis for effect:
- respiration rate
- Remarks on result:
- other: not part of the report but derivable from the reported results
- Duration:
- 28 d
- Dose descriptor:
- EC10
- Effect conc.:
- > 0.316 mg/kg soil dw
- Nominal / measured:
- nominal
- Conc. based on:
- act. ingr.
- Basis for effect:
- respiration rate
- Remarks on result:
- other: not part of the report but derivable from the reported results
- Details on results:
- - Effect concentrations exceeding solubility of substance in test medium: During the 28-day tests, the recommended field rate of test item (0.05 kg test item/ha) and the 5-fold overdose of the test item had no influence on carbon transformation after addition of glucose to a loamy sand.
- Results with reference substance (positive control):
- - Results with reference substance valid? yes
- Relevant effect levels: In tests (non-GLP) with the agricultural soil described above, 16 g NaCI/kg dry weight soil had distinct and longterm (> 28 days) influences on microbial mineralization of carbon. - Reported statistics and error estimates:
- All calculations were performed using Microsoft Excel 97. The % differences in the quantities of COa/h/kg dry weight soil formed between control soils and treated soils were expressed as absolute values and determined as follows: ((sum of treatment - sum of control)/sum of control) x 100 % = % difference. Homogeneity of variances was determined by F-test (significance level 5 %). Depending on the results of the F-Tests, the appropriate T-Tests were performed. In the T-Tests the sum of 12 hours of the mean values of CGVh/kg dry weight from control soils and treated soils were compared. The statistical calculations were carried out using Microsoft Excel 97 software according to the formulars of Sachs (Sachs, 1978).
- Validity criteria fulfilled:
- yes
- Remarks:
- The variation between replicate control samples should be less than ± 15%, see Table 1 in "Any other information on results incl. tables".
Referenceopen allclose all
During the 28-day test, in a soil amended with lucerne-grass-green-meal (5 g/kg), it was found that 0.07 mg test item/kg dry weight soil (equivalent to 0.05 kg product/ha) and the 5-fold overdose of the compound had no influence on nitrogen transformation in a loamy sand. In none of the time intervals analysed during the 28 day exposure the difference in the daily nitrate-N rates exceeds the trigger value of 25%.
The pH values show that the product did not cause a change in soil pH. Nitrite formation was not detected in any of the soil samples. The highest difference between nitrate-N rates per day of control and the one-foldtreated soil samples was 7% (14-28 days after soil treatment). The highest difference between nitrate-N rates per day of control and of the 5-foldoverdose-treated soil samples was 11% (0 -7 days after soil treatment). In this study, the highest coefficient of variation (CV) between nitrate-N concentration in replicate control samples was 6% (7 and 14 days after treatment) and thus did not exceed the recommended limit <15%.
Table 1: Nitrogen transformation: Indicidual values and mean values
Days after Treatment |
Test item/ kg dry weight Soil |
||||||||
|
0 mg |
0.07 mg |
0.33 mg |
||||||
|
mg Nitrogen (N) / kg dry weight Soil |
||||||||
0 |
|
Ammonium-N |
Nitrate -N |
|
Ammonium-N |
Nitrate -N |
|
Ammonium-N |
Nitrate -N |
0 |
R1 |
3.15 |
21.52 |
R4 |
3.27 |
21.33 |
R7 |
4.12 |
20.35 |
R2 |
3.38 |
21.32 |
R5 |
2.96 |
20.71 |
R8 |
2.80 |
20.27 |
|
R3 |
3.23 |
20.97 |
R6 |
2.96 |
20.36 |
R9 |
3.03 |
19.93 |
|
MV |
3.25 |
21.27 |
MV |
3.06 |
20.80 |
MV |
3.32 |
20.19 |
|
SD |
±0.12 |
± 0.28 |
SD |
±0.18 |
±0.49 |
SD |
±0.71 |
±0.22 |
|
CV |
4% |
1% |
CV |
|
|
CV |
|
|
|
7 |
R1 |
1.63 |
6.11 |
R4 |
1.95 |
5.48 |
R7 |
2.33 |
6.73 |
R2 |
1.71 |
5.42 |
R5 |
2.49 |
6.35 |
R8 |
2.02 |
7.30 |
|
R3 |
2.06 |
5.93 |
R6 |
2.68 |
4.76 |
R9 |
1.95 |
5.37 |
|
MV |
1.80 |
5.82 |
MV |
2.37 |
5.53 |
MV |
2.10 |
6.47 |
|
SD |
± 0.23 |
±0.36 |
SD |
±0.38 |
±0.80 |
SD |
±0.21 |
±0.99 |
|
CV |
13 % |
6% |
CV |
|
|
CV |
|
|
|
14 |
R1 |
1.48 |
11.28 |
R4 |
1.32 |
11.11 |
R7 |
1.75 |
12.46 |
R2 |
1.24 |
12.34 |
R5 |
1.32 |
11.50 |
R8 |
1.36 |
12.63 |
|
R3 |
1.36 |
10.99 |
R6 |
1.32 |
11.09 |
R9 |
1.36 |
12.17 |
|
MV |
1.36 |
11.54 |
MV |
1.32 |
11.23 |
MV |
1.49 |
12.42 |
|
SD |
±0.12 |
±0.71 |
SD |
±0.00 |
±0.24 |
SD |
±0.22 |
±0.23 |
|
CV |
9% |
6% |
CV |
|
|
CV |
|
|
|
28 |
R1 |
1.95 |
25.63 |
R4 |
1.44 |
26.98 |
R7 |
1.40 |
26.08 |
R2 |
1.52 |
25.12 |
R5 |
1.32 |
25.47 |
R8 |
1.36 |
26.23 |
|
R3 |
1.36 |
25.57 |
R6 |
1.32 |
25.74 |
R9 |
1.36 |
26.56 |
|
MV |
1.61 |
25.44 |
MV |
1.36 |
26.07 |
MV |
1.37 |
26.29 |
|
SD |
±0.30 |
± 0.28 |
SD |
±0.07 |
±0.81 |
SD |
±0.02 |
±0.24 |
|
CV |
19% |
1 % |
CV |
|
|
CV |
|
|
|
Samples of a loamy sand soil (0.7% org. C, pH (KCI) 5.6) were treated with the test item, amended with lucerne-grass-green meal (5 g/kg dry weight soil) and incubated in the dark at 20 ± 2 °C and 40% of the maximum water holding capacity.
Mean values (MV) and standard deviations (SO) from 3 soil samples (R). CV = Coefficient of Variation ((SO/MV)*100)
Table 2: Rates of nitrogen transformation / time interval: individual values and mean values
Time lnterval (Days) |
Test item / kg dry weight Soil |
|||||
|
0 mg |
0.07 mg |
0.33 mg |
|||
|
mg Nitrogen (N) / kg dry weight Soil / Time Interval |
|||||
|
|
Nitrate-N |
|
Nitrate-N |
|
Nitrate-N |
0-7 |
R1 |
-15.40 |
R4 |
-15.85 |
R7 |
-13.62 |
|
R2 |
-15.90 |
R5 |
-14.36 |
RB |
-12.97 |
|
R3 |
-15.04 |
R6 |
-15.61 |
R9 |
-14.57 |
|
MV |
-15.45 |
MV |
-15.27 |
MV |
-13.72 |
|
SD |
±0.43 |
SD |
±0.80 |
SD |
±0.80 |
7-14 |
R1 |
5.16 |
R4 |
5.63 |
R7 |
5.73 |
|
R2 |
6.92 |
R5 |
5.15 |
RB |
5.33 |
|
R3 |
5.06 |
R6 |
6.33 |
R9 |
6.80 |
|
MV |
5.71 |
MV |
5.70 |
MV |
5.96 |
|
SD |
± |
SD |
±0.59 |
SD |
±0.76 |
14-28 |
R1 |
14.35 |
R4 |
15.88 |
R7 |
13.62 |
|
R2 |
12.78 |
R5 |
13.97 |
RB |
13.59 |
|
R3 |
14.58 |
R6 |
14.66 |
R9 |
14.38 |
|
MV |
13.90 |
MV |
14.83 |
MV |
13.87 |
|
SD |
±0.98 |
SD |
±0.97 |
SD |
±0.45 |
Samples of a loamy sand soil (0.7% org.C, pH (KCI) 5.6) were treated with the test item, amended with lucerne-grass-green meal (5 g/kg dry weight soil) and incubated in the dark at 20± 2 °C and 40% of the maximum water holding capacity.
Mean values (MV) and standard deviations (SD) from 3 soil samples (R)
Table 3: Rates of nitrogen transformation / day: individual values and mean values
Time lnterval (Days) |
Test item / kg dry weight Soil |
|||||||||
|
0 mg |
0.07 mg |
0.33 mg |
|||||||
|
mg Nitrogen (N) / kg dry weight Soil / Time lnterval |
|||||||||
|
|
Nitrate-N |
|
Nitrate-N |
% Diff. |
|
Nitrate-N |
% Diff. |
||
0-7 |
R1 |
-2.20 |
R4 |
-2.26 |
1 |
R7 |
-1.95 |
11 |
||
R2 |
-2.27 |
R5 |
-2.05 |
RB |
-1.85 |
|||||
R3 |
-2.15 |
R6 |
-2.23 |
R9 |
-2.08 |
|||||
MV |
-2.21 |
MV |
-2.18 |
MV |
-1.96 |
|||||
SD |
±0.06 |
SD |
±0.11 |
SD |
±0.11 |
|||||
7-14 |
R1 |
0.74 |
R4 |
0.80 |
0 |
R7 |
0.82 |
4 |
||
R2 |
0.99 |
R5 |
0.74 |
RB |
0.76 |
|||||
R3 |
0.72 |
R6 |
0.90 |
R9 |
0.97 |
|||||
MV |
0.82 |
MV |
0.81 |
MV |
0.85 |
|||||
SD |
±0.15 |
SD |
±0.08 |
SD |
±0.11 |
|||||
14-28 |
R1 |
1.03 |
R4 |
1.13 |
7 |
R7 |
0.97 |
0 |
||
R2 |
0.91 |
R5 |
1.00 |
RB |
0.97 |
|||||
R3 |
1.04 |
R6 |
1.05 |
R9 |
1.03 |
|||||
MV |
0.99 |
MV |
1.06 |
MV |
0.99 |
|||||
SD |
±0.07 |
SD |
±0.07 |
SD |
±0.03 |
|||||
Samples of a loamy sand soil (0.7% org. C, pH (KCI) 5.6) were treated with the test item, amended with lucerne-grass-green meal (5 g/kg dry weight soil) and incubated in the dark at 20 ± 2 °C and 40% of the maximum water holding capacity.
(a) calculated from the individual and mean values of the respective intervals presented in Table 2.
% Diff. = % Difference (absolute values)
No significant difference between treated and untreated soil samples (t-test with 5 % probability of error).
During the 28-day tests, 0.07 mg test item/kg dry weight soil (0.05 kg test item/ha) and 0.33 mg test item/kg dry weight soil (0.25 kg test item/ha) had no influence on respiration after adding glucose to the loamy sand soil. After an exposure of 28 days the difference in the carbon dioxide production does not exceed the trigger value of 25% (mentioned in the guidelines). In this study, the highest coefficient of variation (CV) between carbon dioxide concentration in replicate control samples was 2.3% (14 days after treatment) and thus did not exceed the recommended limit <15%.
Table 1: Carbon transformation on day 0, just after treatment: Individual Values
Hours after addition of Glucose |
mg Carbon Dioxide / Hour / kg dry weight Soil |
||||||||
Test Item/kg dry weight Soil |
|||||||||
0 mg Individual Values |
0.07 mg Individual Values |
0.33 mg Individual Values |
|||||||
1 |
14.17 |
14.53 |
13.57 |
13.83 |
13.50 |
14.00 |
13.00 |
13.33 |
14.33 |
2 |
14.77 |
14.83 |
14.00 |
13.73 |
13.33 |
13.97 |
14.00 |
14.17 |
13.83 |
3 |
14.77 |
15.60 |
14.77 |
14.30 |
14.27 |
14.10 |
14.10 |
14.10 |
14.10 |
4 |
15.33 |
15.33 |
14.67 |
13.83 |
14.33 |
13.83 |
14.07 |
14.47 |
14.67 |
5 |
15.50 |
16.00 |
15.50 |
14.83 |
15.07 |
14.50 |
14.67 |
15.50 |
14.83 |
6 |
16.83 |
18.33 |
16.67 |
15.67 |
15.83 |
15.83 |
15.83 |
16.17 |
16.17 |
7 |
18.67 |
18.50 |
18.67 |
17.00 |
17.43 |
17.50 |
17.00 |
17.17 |
17.93 |
8 |
20.33 |
20.67 |
20.50 |
18.83 |
19.17 |
19.17 |
18.50 |
20.17 |
20.17 |
9 |
23.00 |
23.00 |
23.17 |
20.83 |
21.83 |
20.83 |
20.33 |
22.00 |
21.70 |
10 |
26.07 |
26.50 |
25.63 |
22.50 |
23.83 |
22.67 |
22.50 |
24.17 |
24.67 |
11 |
28.33 |
30.00 |
29.17 |
25.00 |
27.27 |
26.23 |
25.50 |
28.00 |
28.83 |
12 |
35.33 |
34.67 |
34.50 |
29.43 |
31.50 |
30.60 |
29.67 |
32.70 |
32.00 |
Sum |
243.10 |
247.97 |
240.80 |
219.80 |
227.37 |
223.23 |
219.17 |
231.93 |
233.23 |
MV of Sum |
243.96 |
223.47* |
228.11 |
||||||
SD |
3.7 |
3.8 |
7.8 |
||||||
% CV |
1.5 |
|
|
||||||
% of control |
100 |
92 |
94 |
||||||
% Difference |
- |
8 |
6 |
||||||
Samples of a loamy sand soil (0.7% org. C, pH (KCI) 5.6) were treated with the test item., then immediately amended with 2000 mg glucose/kg dry weight soil and placed on an automated respirometer (gas analyzer).
Mean values (MV) and standard deviations (SD) from 3 soil samples.
% CV = Coefficient of Variation: (SD/MV of sum) x 100%.
% Difference (absolute value) = ((MV of sum of treatment- MV of sum of control)/MV of sum of control) x 100%.
* Significant difference between treated and untreated soil samples (t-test with 5 % probability of error).
Table 2: Carbon transformation 14 days after treatment: Individual Values
Hours after addition of Glucose |
mg Carbon Dioxide / Hour / kg dry weight Soil |
||||||||
Test Item/kg dry weight Soil |
|||||||||
0 mg Individual Values |
0.07 mg Individual Values |
0.33 mg Individual Values |
|||||||
1 |
12.17 |
12.50 |
12.87 |
12.00 |
11.50 |
11.67 |
11.33 |
11.50 |
11.83 |
2 |
12.83 |
14.00 |
13.00 |
12.50 |
12.50 |
12.67 |
12.33 |
13.00 |
12.83 |
3 |
12.47 |
12.33 |
12.00 |
12.33 |
11.83 |
11.83 |
11.17 |
11.67 |
12.17 |
4 |
12.47 |
13.47 |
12.97 |
12.70 |
12.13 |
11.63 |
11.80 |
12.47 |
12.97 |
5 |
13.17 |
13.27 |
13.33 |
13.17 |
12.83 |
13.00 |
12.33 |
13.33 |
13.00 |
6 |
13.50 |
14.23 |
14.00 |
13.13 |
12.83 |
13.17 |
13.50 |
13.67 |
13.67 |
7 |
14.67 |
15.50 |
14.67 |
13.97 |
13.73 |
13.33 |
13.67 |
14.17 |
14.33 |
8 |
15.67 |
16.87 |
16.23 |
15.00 |
14.17 |
14.17 |
13.83 |
14.67 |
15.50 |
9 |
17.17 |
18.17 |
17.50 |
15.83 |
15.67 |
15.10 |
15.67 |
17.00 |
17.50 |
10 |
19.00 |
20.50 |
19.83 |
17.33 |
17.17 |
17.50 |
17.77 |
18.50 |
19.17 |
11 |
21.50 |
23.17 |
23.33 |
19.33 |
17.83 |
18.17 |
19.40 |
20.50 |
21.83 |
12 |
25.53 |
25.20 |
25.20 |
21.57 |
20.70 |
20.37 |
22.20 |
22.87 |
24.70 |
Sum |
190.13 |
199.20 |
194.93 |
178.87 |
172.90 |
172.60 |
175.00 |
183.33 |
189.50 |
MV of Sum |
194.76 |
174.79* |
182.61 |
||||||
SD |
4.5 |
3.5 |
7.3 |
||||||
% CV |
2.3 |
|
|
||||||
% of control |
100 |
90 |
94 |
||||||
% Difference |
- |
10 |
6 |
||||||
Samples of a loamy sand soil (0.7% org.C, pH (KCI) 5.6) were treated with test item, incubated in the dark at 20 ± 2 °C and 40% of the maximum water holding capacity for 14 days, then amended with 2000 mg glucose/kg dry weight soil and placed on an automated respirometer (gas analyzer).
Mean values (MV) and standard deviations (SD) from 3 soil samples.
% CV = Coefficient of Variation: (SD/MV of sum) x 100%.
% Difference (absolute value) = ((MV of sum of treatment- MV of sum of control)/MV of sum of control) x 100%.
* Significant difference between treated and untreated soil samples (t-test with 5 % probability of error).
Table 3: Carbon transformation 28 days after treatment: Individual Values
Hours after addition of Glucose |
mg Carbon Dioxide / Hour / kg dry weight Soil |
||||||||
Test Item./kg dry weight Soil |
|||||||||
0 mg Individual Values |
0.07 mg Individual Values |
0.33 mg Individual Values |
|||||||
1 |
12.17 |
12.83 |
12.17 |
11.67 |
11.50 |
11.83 |
11.00 |
12.00 |
11.83 |
2 |
12.17 |
12.93 |
13.27 |
12.67 |
13.17 |
12.67 |
13.17 |
13.00 |
12.67 |
3 |
13.00 |
12.50 |
12.70 |
12.00 |
11.83 |
11.17 |
12.00 |
11.93 |
11.50 |
4 |
13.17 |
13.17 |
12.27 |
12.33 |
12.17 |
12.33 |
12.33 |
12.00 |
12.67 |
5 |
13.67 |
12.83 |
12.47 |
12.17 |
11.87 |
12.33 |
11.83 |
11.67 |
12.33 |
6 |
13.33 |
13.00 |
13.33 |
12.67 |
12.33 |
12.83 |
13.00 |
12.83 |
12.83 |
7 |
14.33 |
13.67 |
14.00 |
13.33 |
13.17 |
13.17 |
13.33 |
13.33 |
13.50 |
8 |
15.50 |
14.67 |
15.17 |
14.33 |
14.00 |
14.13 |
14.00 |
14.50 |
14.80 |
9 |
15.67 |
15.33 |
14.40 |
15.50 |
14.67 |
14.50 |
14.67 |
15.00 |
15.67 |
10 |
17.43 |
17.00 |
17.07 |
16.73 |
15.90 |
16.73 |
16.90 |
16.57 |
17.33 |
11 |
19.00 |
19.20 |
18.83 |
17.83 |
17.30 |
17.53 |
18.67 |
18.00 |
19.83 |
12 |
22.67 |
21.33 |
22.00 |
20.83 |
20.00 |
19.50 |
20.50 |
20.83 |
21.67 |
Sum |
182.10 |
178.47 |
177.67 |
172.07 |
167.90 |
168.73 |
171.40 |
171.67 |
176.63 |
MV of Sum |
179.41 |
169.57* |
173.23 |
||||||
SD |
2.4 |
2.2 |
2.9 |
||||||
% CV |
1.3 |
|
|
||||||
% of control |
100 |
95 |
97 |
||||||
% Difference |
- |
5 |
3 |
||||||
Samples of a loamy sand soil (0.7% org. C, pH (KCI) 5.6) were treated with test item, incubated in the dark at 20 ± 2 °C and 40% of the maximum water holding capacity for 28 days, then amended with 2000 mg glucose/kg dry weight soil and placed on an automated respirometer (gas analyzer).
Mean values (MV) and standard deviations (SO) from 3 soil samples.
% CV = Coefficient of Variation: (SO/MV of sum) x 100%.
% Oifference (absolute value) = ((MV of sum of treatment- MV of sum of control)/MV of sum of control) x 100%.
* Significant difference between treated and untreated soil samples (t-test with 5% probability of error).
Description of key information
NOEC (28 d) ≥0.316 mg a.s./kg soil (OECD 216)
NOEC (28 d) ≥0.316 mg a.s./kg soil (OECD 217)
Key value for chemical safety assessment
- Long-term EC10 or NOEC for soil microorganisms:
- 0.316 mg/kg soil dw
Additional information
Two experimental studies are available investigating the
potential effects of the test item (CAS 874195-61-6) on nitrogen
(M-080546-01-2) and carbon transformation (M-080753-01-2) of
terrestrial microorganisms.The studies were performed according
to OECD guideline 216 and 217 under GLP conditions.For both
studies a loamy sand soil was exposed for 28 d to concentrations of
0.07 mg and 0.33 mg test item/kg dry weight soil (application rates
were equivalent to 0.05 kg and 0.25 kg test item/ha).
In case of nitrogen transformation, Lucerne-grass-green meal was added
to the soil (5 g/kg dry weight soil) to stimulate nitrogen
transformation. The substance caused no adverse effects (OECD 216) on
the soil nitrogen transformation (expressed as NO3-N-production) at
the end of the 28 d incubation period. The study was performed in a
field soil at concentrations up to 0.316 mg a.s./kg soil dry weight.
The NOEC (28 d) was therefore reported as ≥ 0.316 mg a.s./kg soil. In
case of carbon transformation glucose was added to the soil samples (2
g/kg dry weight soil) to induce maximum respiration rate. During the
28-day test, no influence on carbon transformation after addition of
glucose to a loamy sand was recorded. The NOEC (28 d) was therefore
reported as ≥0.316 mg a.s./kg soil.
Information on Registered Substances comes from registration dossiers which have been assigned a registration number. The assignment of a registration number does however not guarantee that the information in the dossier is correct or that the dossier is compliant with Regulation (EC) No 1907/2006 (the REACH Regulation). This information has not been reviewed or verified by the Agency or any other authority. The content is subject to change without prior notice.
Reproduction or further distribution of this information may be subject to copyright protection. Use of the information without obtaining the permission from the owner(s) of the respective information might violate the rights of the owner.
