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EC number: 617-298-9 | CAS number: 82097-50-5
- 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
Biodegradation in soil
Administrative data
Link to relevant study record(s)
Description of key information
Nine biodegradation in soil studies are available and included as supporting information. More details are provided in the additional information.
Key value for chemical safety assessment
Additional information
Studies required in Annex VII and some other studies required for higher tonnage are available. All the studies available have been included in the dossier and some of them are considered in the PBT assessment. Therefore, all studies are summarized below. Seven aerobic studies and two aerobic/anaerobic studies are available for this endpoint. Five of them followed standard test guidelines and four of them complied with GLP. Calculation of degradation half-lives according to a standardized methodology across three studies (Hurst 2013 and Hurst 2012) is presented in Greener’s report (2012). The test conditions and key effect values of all studies were summarised in Table 1- Table 2 below.
Table 1. Test conditions and key effect values of aerobic studies that followed standard test conditions (i.e. meet OECD, SETAC, OPPTS or JMAFF guideline requirements) and were used in a weight of evidence approach for the CSA.
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USDA / Name / Origin | OC [%] / pH (water) | T. [°C] / Moisture / Appl. Rate | DT50 [d] - Kinetic model in original report | DT50 [d] - Kinetic model recalculated | Author / Year |
Sandy clay loam, 18 Acres, UK |
2.6 / 6.5 | 20 / pF 2 / 0.08 mg/kg | 26.9 – SFO | 67.4* – DFOP slow phase | Hurst, 2013; Greener, 2012 |
Sandy clay loam, 18 Acres, UK |
2.6 / 6.5 | 20 / pF 2 / 0.08 mg/kg | 32.0 - SFO | 118* – DFOP slow phase | Hurst, 2013; Greener, 2012 |
Loam, Gartenacker, CH | 1.9 / 8.5 | 20 / pF 2 / 0.04 mg/kg | 20.7 - SFO | 20.7* – SFO | Hurst, 2012; Greener, 2012 |
Sandy clay loam, 18 Acres, UK | 2.2 / 6.7 | 20 / pF 2 / 0.04 mg/kg | 33.9 – SFO | 84.7* – DFOP slow phase | Hurst, 2012; Greener, 2012 |
Silt loam, Krone, CH | 1.2 / 6.9 | 20 / pF 2 / 0.04 mg/kg | 43.1 – SFO | 80.2* – DFOP slow phase | Hurst, 2012; Greener, 2012 |
Sandy clay loam, North Dakota, USA |
2.7 / 7.7 | 20 / pF 2 / 0.04 mg/kg |
60.6 - SFO |
60.6* – SFO | Hurst, 2012; Greener, 2012 |
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| Geomean / Median | 54.5 |
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* Value used for determination of the geomean; geomean for 18 Acres soil calculated first (87.7 d, n=3)
Table 2. Test conditions and key effect values of studies that were performed under anaerobic conditions or without following standard test conditions (i.e. meet OECD, SETAC, OPPTS or JMAFF guideline requirements)*
USDA / Name / Origin | OC [%] / pH (water) | T. [°C] / Moisture / Appl. Rate | DT50 [d] - Kinetic model in original report | Aerobic/anaerobic | Author / Year |
Sandy Loam, Fayette, Kentucky, USA |
1.8 / 7.5 | 20 / 75% FC / 4.2 mg/kg |
111.8 (linear SFO) | anaerobic | Olson, 1989
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Silt loam, Strassenacker, Les Barges, CH | 1.4 / 7.6 | 25 / 75% FC / 1.1 mg/kg |
325.5 (SFO) | Aerobic (Sterile) | Plücken, 1985a |
Silt loam, Strassenacker, Les Barges, CH | 1.4 / 7.6 |
25 / 75% FC / 1.1 mg/kg |
66.5 - SFO | Aerobic (Non -sterile) | Plücken, 1985a |
Silt loam, Strassenacker, Les Barges, CH | 1.4 / 7.6 |
25 / 75% FC / 0.94 mg/kg |
105 – SFO | Aerobic (Non -sterile) | Plücken, 1985b |
Silt loam, Strassenacker, Les Barges, CH | 1.45 / 7.5 | 25 / 75% FC / 1.01mg/kg | 52.8 – SFO | Aerobic (Non -sterile) | Plücken, 1989 |
Silt loam, Strassenacker, Les Barges, CH | 1.45 / 7.5 | 15 / 75% FC / 1.01mg/kg | 121.5 - SFO | Aerobic (Non -sterile) | Plücken, 1989 |
Mosimann, CH
| 1.6 / 7.2
| 25 / 40% MWC / 1.06 mg/kg | 70.9 – SFO | Aerobic (Non -sterile) | Plücken, 1986a |
Pappelacker, CH
| 2.1 / 7.1
| 25 / 40% MWC / 1.06 mg/kg | 73.5 – SFO | Aerobic (Non -sterile) | Plücken, 1986a |
Standard 2.2, Neuhofen, CH | 0.95 / 5.6
| 25 / 40% MWC / 1.07 mg/kg | 44.9 – SFO | Aerobic (Non -sterile) | Plücken, 1986b |
Standard 2.3, Hatzenbuehl, CH | 1.45 / 7.5
| 25 / 40% MWC / 1.07 mg/kg | 38.6 – SFO | Aerobic (Non -sterile) | Plücken, 1986b |
* Example of non-standard test conditions: Sterile soil, low/high incubation temperatures, low/high moisture content, exaggerated application rate etc.
Field studies
A large number of field studies were conducted with the test material. The studies are not summarized as an endpoint study entry but are briefly discussed here. The test material was tested for different applications in different crops and bare grounds with a rate ranging between 10 - 2240 g/ha. The DT50 reported in the original reports were between 3 - 91 days. The DT50 as recalculated in SFO and DFOP models were between 2 - 65.4 days. The geometric mean DT50 (n=7) for the substance degradation in soil under representative field conditions was calculated to be 16.5 days (Resseier 1992a, Resseier 1992b, Resseier 1992c, Resseier 1992d, Tournayre 1988, Egli 1989a, Egli 1989b, Hardy 2011 and Hardy 2016).
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.
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