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EC number: 406-250-0 | CAS number: 72619-32-0 HALOXYFOP R-(+)-ME HERBICIDAL CHEMICAL
- 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 water: screening tests
Administrative data
Link to relevant study record(s)
- Endpoint:
- biodegradation in water: ready biodegradability
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 301 D (Ready Biodegradability: Closed Bottle Test)
- Deviations:
- no
- Qualifier:
- according to guideline
- Guideline:
- EU Method C.6 (Degradation: Chemical Oxygen Demand)
- Deviations:
- no
- GLP compliance:
- yes
- Specific details on test material used for the study:
- XRD 535 Me
Lot # : GHD-2413-21
Purity: 93.9% - Oxygen conditions:
- aerobic
- Inoculum or test system:
- other: Activated sludge bacteria
- Details on inoculum:
- - Source of inoculum/activated sludge: The aeration stage of the HRC Limited sewage treatment plant treating predominantly domestic sewage
- Preparation of inoculum for exposure: The sample was allowed to settle and the supernatant filtered through Whatman GFA filter paper (first 250 mL discarded) - Duration of test (contact time):
- 28 d
- Initial conc.:
- 3 mg/L
- Based on:
- test mat.
- Parameter followed for biodegradation estimation:
- DOC removal
- Details on study design:
- TEST CONDITIONS
- Composition of medium: Standard nutrient medium (solution 1: KH2PO4, K2HPO4, Na2HPO4.2H2O, NH4Cl; solution 2: MgSO4.7H2O; solution 3: CaCl2; Solution 4: FeCl3.6H2O)
- Test temperature: 20 ± 1°C
- Continuous darkness: Yes
TEST SYSTEM
- Culturing apparatus: 280 mL BOD bottles (darkened glass) with ground glass stoppers
- Number of culture flasks/concentration: 2
- Test performed in closed vessels due to significant volatility of test substance: Closed vessels
SAMPLING
- Sampling frequency: 0, 5, 15 or 28 days
CONTROL AND BLANK SYSTEM
- Inoculum blank: Inoculated dilution water; inoculated dilution water and filter paper
- Abiotic sterile control: Non-inoculated dilution water - Reference substance:
- benzoic acid, sodium salt
- Remarks:
- 3 mg/L
- Reference substance:
- aniline
- Remarks:
- 2 mg/L
- Test performance:
- Oxygen depletions in the inoculated and non-inoculated control series were within the prescribed limits
- Key result
- Parameter:
- % degradation (DOC removal)
- Value:
- >= 8 - <= 11
- Sampling time:
- 28 d
- Details on results:
- Oxygen depletion (28 days): 0.375 mgO2/L
- Parameter:
- ThOD
- Value:
- 4.47 other: mgO2/L
- Results with reference substance:
- Sodium benzoate attained 81-83% degradation within 28 days.
Aniline attained 59% degradation within 28 days. - Validity criteria fulfilled:
- yes
- Interpretation of results:
- not readily biodegradable
- Conclusions:
- Not readily biodegradable
- Executive summary:
The ready biodegradability of the test substance was assessed using a closed bottle procedure according to EEC directive C6 and OECD guideline 301D.
The test substance attained between 8-11% degradation after 28 days and therefore cannot be termed as readily biodegradable.
The standard substances, sodium benzoate and aniline, attained 81-83% and 59% degradation respectively within 28 days.
Oxygen depletions in the inoculated and non-inoculated control series were within the prescribed limits.
Reference
Description of key information
Study Type |
Study Details | Value | Guideline | Reliability |
Ready Biodegradation Study | Closed bottle method |
Not Readily Biodegradable |
OECD 301D EU Method C.6 |
1 |
Key value for chemical safety assessment
- Biodegradation in water:
- not biodegradable
Additional information
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