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Diss Factsheets
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EC number: 410-400-0 | CAS number: 88671-89-0 SYSTHANE TECHNICAL
- 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
- Study period:
- 1988-12-07 to 1989-01-31
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- study well documented, meets generally accepted scientific principles, acceptable for assessment
- Justification for type of information:
- COD/BOD study preformed with 28 day biological phase. Results show limited solubility, study appears to be valid and shows that the substance is not readily biodegradable.
- Qualifier:
- equivalent or similar to guideline
- Guideline:
- OECD Guideline 301 D (Ready Biodegradability: Closed Bottle Test)
- GLP compliance:
- yes (incl. QA statement)
- Oxygen conditions:
- aerobic
- Inoculum or test system:
- activated sludge, non-adapted
- Details on inoculum:
- The solution was inoculated with a number of micro-organisms (10E3 to 10E6 bacteria/mL final volume) from a mixed population from a strongly aerated activated sludge plant, and kept in closed bottles in the dark at 20ºC.
- Duration of test (contact time):
- 28 d
- Initial conc.:
- ca. 2 mg/L
- Based on:
- test mat.
- Parameter followed for biodegradation estimation:
- DOC removal
- Reference substance:
- acetic acid, sodium salt
- Remarks:
- concentration of 2 mg/L
- Key result
- Parameter:
- % degradation (DOC removal)
- Value:
- ca. 22.4
- Sampling time:
- 28 d
- Details on results:
- Inhibition study shows absence of inhibition.
- Key result
- Parameter:
- BOD5
- Value:
- 0.39 other: mg O2/mg
- Key result
- Parameter:
- COD
- Value:
- 1.74 other: mg O2/mg
- Validity criteria fulfilled:
- yes
- Interpretation of results:
- not readily biodegradable
- Remarks:
- The biodegradability of myclobutanil was 7.8, 13.5 and 22.4% at 5, 15 and 28 days, respectively. Although these results indicate inherent biodegradability, myclobutanil cannot be classified as readily biodegradable. This is compared to a biodegradability of >60% for the sodium acetate reference substance at 28 days.
- Conclusions:
- Myclobutanil shows inherent biodegradation but is not readily biodegradable under the conditions of the test.
Myclobutanil does not display inhibitory effects under the conditions of the test. - Executive summary:
Biodegradability of the test item was preformed as the biochemical oxygen demand (BOD) within 28 days as a percentage of the chemical oxygen demand (COD). Study was done broadly in accordance with EC Method C.6 and OECD guideline number 301D. The biodegradability of myclobutanil was 7.8, 13.5 and 22.4% at 5, 15 and 28 days, respectively. Although these results indicate inherent biodegradability, myclobutanil cannot be classified as readily biodegradable.
Reference
Description of key information
Biodegradability of the test item was performed as the biochemical oxygen demand (BOD) within 28 days as a percentage of the chemical oxygen demand (COD). Study was done broadly in accordance with EC Method C.6 and OECD guideline number 301D. The biodegradability of myclobutanil was 7.8, 13.5 and 22.4% at 5, 15 and 28 days, respectively. Although these results indicate inherent biodegradability, myclobutanil cannot be classified as readily biodegradable.
Key value for chemical safety assessment
- Biodegradation in water:
- inherently biodegradable
- Type of water:
- freshwater
Additional information
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.