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Diss Factsheets
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EC number: 205-027-3 | CAS number: 131-54-4
- 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
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Biodegradation in water: screening tests
Administrative data
- Endpoint:
- biodegradation in water: ready biodegradability
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- 1991-05-14 - 1991-06-11
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 1 991
- Report date:
- 1991
Materials and methods
Test guideline
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 301 C (Ready Biodegradability: Modified MITI Test (I))
- Deviations:
- no
- GLP compliance:
- no
- Remarks:
- The test was not conducted according to GLP guidance but according to GLP-compliant guidance. Accordingly, the study is documented in compliance with GLP but a statement of the quality assurance is not required.
Test material
- Reference substance name:
- 2,2'-dihydroxy-4,4'-dimethoxybenzophenone
- EC Number:
- 205-027-3
- EC Name:
- 2,2'-dihydroxy-4,4'-dimethoxybenzophenone
- Cas Number:
- 131-54-4
- Molecular formula:
- C15H14O5
- IUPAC Name:
- 2-(2-hydroxy-4-methoxybenzoyl)-5-methoxyphenol
- Test material form:
- solid: particulate/powder
Constituent 1
- Specific details on test material used for the study:
- SOURCE OF TEST MATERIAL
- Source and lot/batch No.of test material: 03-3849
STABILITY AND STORAGE CONDITIONS OF TEST MATERIAL
- Stability under test conditions: Stability to Hydrolysis, Photolysis, Oxidation and Temperatures up to 100 °C is warranted according to the information of the sponsor.
Study design
- Oxygen conditions:
- aerobic
- Inoculum or test system:
- activated sludge, domestic, non-adapted
- Details on inoculum:
- - Source of inoculum/activated sludge (e.g. location, sampling depth, contamination history, procedure): activated sludge taken from a laboratory scale waste water treatment plant (K 210) of the test facility (BASF AG, Emissionsüberwachung und ökoloqie ( DUO) Labor für Ökologie ( DUU/OO ) K 210, 6700 Ludwigshafen/Rhein, Germany); the inoculum for the lab scale fermenter was muncipal activated sludge without pre-treatment
- dry solids: 1 g/L
- Preparation of inoculum for exposure: washing
- Concentration of washed sludge: 750 mg/L (used as inoculum),
- Final concentration in the treatment groups: 30 mg/L
- Water filtered: no - Duration of test (contact time):
- 28 d
Initial test substance concentration
- Initial conc.:
- 100 mg/L
- Based on:
- test mat.
Parameter followed for biodegradation estimation
- Parameter followed for biodegradation estimation:
- other: The biological oxygen demand (BOD) was measured over a 28-day period. After this period, amounts of the dissolved organic carbon (DOC) and residual test substance were measured. The biodegradability of the test substance was evaluated from these results.
- Details on study design:
- TEST CONDITIONS
- Composition of medium: according to OECD 301 C
- Additional substrate: none
- Solubilising agent (type and concentration if used): none
- Test temperature: 22 ± 2 °C. according to EEC 79/831 Annex V, Methods for determination of ecotoxicity, Biodegradation Part IV,
Manometric Respirometry (Method C.4-D)
- pH: 6,7 - 7,2
- pH adjusted: no
- Suspended solids concentration: 30 g/L
- Continuous darkness: yes (closed Sapromat)
TEST SYSTEM
- Culturing apparatus: Respirometer (Sapromat, not further specified)
- Number of culture flasks/concentration: one concentration of test item with 7 flasks; two controls, toxicity control, aboiotic control, reference item (positve control)
- Method used to create aerobic conditions: constant O2 partial pressure (Sapromat)
- Measuring equipment: Sapromat integrated control
- Test performed in closed vessels due to significant volatility of test substance: no
- Test performed in open system: no
- Details of trap for CO2 and volatile organics if used: soda lime
SAMPLING
- Sampling frequency: integrated closed system with automatic data logging
CONTROL AND BLANK SYSTEM
- Inoculum blank: yes, 2 flasks
- Abiotic sterile control: yes, 1 flask
- Toxicity control: yes, 1 flask
Reference substance
- Reference substance:
- aniline
Results and discussion
- Test performance:
- There was no specific factor which might have affected the reliability of the test results.
The test was judged valid since the measurement results fulfilled all of the validity criteria of the guideline.
% Degradation
- Key result
- Parameter:
- % degradation (O2 consumption)
- Value:
- 0
- Sampling time:
- 28 d
- Details on results:
- Due to the lack of biodegradation, no substance specific analysis has been conducted.
BOD5 / COD results
BOD5 / CODopen allclose all
- Key result
- Parameter:
- BOD5
- Value:
- 0 mg O2/g test mat.
- Parameter:
- COD
- Value:
- 1 940 mg O2/g test mat.
- Parameter:
- ThOD
- Value:
- 1 831 mg O2/g test mat.
- Results with reference substance:
- The reference substance Alinin showed a degradation of 63% after 9 days.
Applicant's summary and conclusion
- Validity criteria fulfilled:
- yes
- Interpretation of results:
- not readily biodegradable
- Conclusions:
- The test item is not readily biodegradable. Maximum Biodegradation in the respirometric study was 0% ThOD and 0% COD.
The test guideline validity criteria were fulfilled.
The test item is not inhibitory to activated sludge based on toxicity control.
The test item is not inhibitory to activated sludge based on activated sludge respiration inhibition test. - Executive summary:
Biodegration of the test item has been conducted by means of an OECD 301 C test. Prior to the test, bacterial respiration inhibition (OECD 209), water solubility, chemical oxygen demand (DOC) and biochemical oxygen demand (BOD/ThOD) were determined. Primary biodegradation has not been assessed.
The test item is considered to be not readily biodegradable. The test item does not inhibit bacterial respiration and activity.
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.
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