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EC number: 403-080-9 | CAS number: 92484-48-5 BENZTRIAZOL UV ABSORBER BUK 4499; BUK 4499; UV ABSORBER BUK 4499
- 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:
- supporting study
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- other: Study performed according to guideline and under GLP
- Qualifier:
- according to guideline
- Guideline:
- EU Method C.6 (Degradation: Chemical Oxygen Demand)
- Deviations:
- no
- GLP compliance:
- yes
- Oxygen conditions:
- aerobic
- Duration of test (contact time):
- 2 h
- Initial conc.:
- 2.5 other: mg
- Based on:
- test mat.
- Parameter followed for biodegradation estimation:
- test mat. analysis
- Details on study design:
- TEST CONDITIONS
- Test temperature: 148 +/- 3°C
SAMPLING
- Sampling frequency: after 2h
CONTROL AND BLANK SYSTEM
- Blank: yes - Reference substance:
- other: KHP
- Parameter:
- COD
- Value:
- 1 479 other: mg/g O2
- Results with reference substance:
- COD = 204 mg/g O2 (criteria: 200 +/- 8 mg/g O2)
- Validity criteria fulfilled:
- yes
- Conclusions:
- The COD of the test substance is 1479 mg/g O2.
- Endpoint:
- biodegradation in water: ready biodegradability
- Type of information:
- experimental study
- Adequacy of study:
- supporting study
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- other: Study performed according to guideline and under GLP, with some minor deviations
- Qualifier:
- according to guideline
- Guideline:
- EU Method C.5 (Degradation: Biochemical Oxygen Demand)
- Deviations:
- yes
- Remarks:
- concentration of the test substance, method of O2-determination and inoculum (Husman)
- GLP compliance:
- yes
- Oxygen conditions:
- aerobic
- Inoculum or test system:
- other: mixed culture of bacteria
- Details on inoculum:
- Test organism: mixed culture of bacteria (effluent of a Husman laboratory apparatus)
- Duration of test (contact time):
- 5 d
- Initial conc.:
- 1 mg/L
- Based on:
- test mat.
- Initial conc.:
- 5 mg/L
- Based on:
- test mat.
- Initial conc.:
- 10 mg/L
- Based on:
- test mat.
- Initial conc.:
- 20 mg/L
- Based on:
- test mat.
- Initial conc.:
- 50 mg/L
- Based on:
- test mat.
- Initial conc.:
- 100 mg/L
- Based on:
- test mat.
- Initial conc.:
- 200 mg/L
- Based on:
- test mat.
- Initial conc.:
- 500 mg/L
- Based on:
- test mat.
- Parameter followed for biodegradation estimation:
- O2 consumption
- Details on study design:
- TEST CONDITIONS
- Test temperature: 23 +/- 2°C
SAMPLING
- Sampling frequency: after 5 days
CONTROL AND BLANK SYSTEM
- Inoculum blank: yes - Reference substance:
- benzoic acid, sodium salt
- Remarks:
- (purity: 99.3%)
- Parameter:
- BOD5
- Value:
- 0 other: mg/g O2
- Results with reference substance:
- BOD5 = 100 (1040 ) mg/g for 4 (5) mg/L reference substance
- Validity criteria fulfilled:
- yes
- Interpretation of results:
- under test conditions no biodegradation observed
- Conclusions:
- The BOD5 of the test substance is 0 mg/g O2.
- Endpoint:
- biodegradation in water: ready biodegradability
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- 1988-03-15 to 1988-04-12
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- guideline study with acceptable restrictions
- Remarks:
- No GLP stated
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 301 A (old version) (Ready Biodegradability: Modified AFNOR Test)
- Deviations:
- yes
- Remarks:
- Sterilization instead of steril filtration; Determination of bacteria concentration: by plating; Inoculum effluent of a domestic sewage treatment plant
- Qualifier:
- according to guideline
- Guideline:
- other: EEC Directive, Annex, C.4
- Deviations:
- yes
- Remarks:
- Sterilization instead of steril filtration; Determination of bacteria concentration: by plating; Inoculum effluent of a domestic sewage treatment plant
- GLP compliance:
- no
- Specific details on test material used for the study:
- - Name of test material (as cited in study report): FAT-75`309/A
- Oxygen conditions:
- aerobic
- Inoculum or test system:
- sewage, domestic, non-adapted
- Details on inoculum:
- - Strain/Inoculation: Mixture of polyvalent bacteria colocted an 15.03.88 - effluent of a domestic sewage treatment plant (ARA-Rhein)
- Concentration of sludge: 1,7 X 10E7/ml - Duration of test (contact time):
- 28 d
- Initial conc.:
- 45.3 mg/L
- Based on:
- DOC
- Parameter followed for biodegradation estimation:
- DOC removal
- Details on study design:
- TEST CONDITIONS
- Test temperature: 23 +/- 1°C
- Lighting: Indirect daylight
- estimation technique: TOC/DOC Shimadzu TOC-500
- Test concentration: 40mg/L DOC nominal - Reference substance:
- other: glucose
- Test performance:
- Sampling: on days 0, 3, 7, 14, 28 days
- Key result
- Parameter:
- % degradation (DOC removal)
- Value:
- 0
- Sampling time:
- 28 d
- Details on results:
- NA
- Results with reference substance:
- Biodegradation corrected by the blank control and mesured as DOC (mg/L) is 87.5 % (28th day).
- Validity criteria fulfilled:
- yes
- Interpretation of results:
- under test conditions no biodegradation observed
- Conclusions:
- The biodegradation corrected by blank control and measured as DOC (mg/L) is 0 % (28th day). The test item is not readily biodegradable.
- Executive summary:
Sodium 3(2H-benzotriazol-2-yl)-5-sec-butyl-4-hydroxybenzenesulfonate was tested in a biodegradation test according to OECD guideline 301A (modified Afnor-Test) using a concentration of nominally 40 mg/L DOC. The test was left running for 28 days. Glucose was chosen as positive control. Biodegradation of the positive control corrected by the blank control and measured as DOC (mg/L) was 87.5 % (28th day). The biodegradation of the test item corrected by blank control and measured as DOC (mg/L) is 0 % (28th day). No inhibiton on the activity of the bacteria was found. The test item is therefore evaluated as not ready biodegradable and not bacteric toxic at the test concentration of 40 mg/L.
Referenceopen allclose all
BOD analytical data:
Substance | Concentration (mg/L) | O2-start | O2-end | Blank | BOD5 (mg/g O2) |
Reference | 4 | 8.8 | 3.9 | 0.5 | 1100 |
5 | 8.8 | 3.1 | 0.5 | 1040 | |
Test substance | 1 | 8.9 | 8.4 | 0.5 | / |
5 | 8.9 | 8.5 | 0.5 | / | |
10 | 8.9 | 8.4 | 0.5 | / | |
20 | 8.9 | 8.5 | 0.5 | / | |
50 | 8.9 | 8.4 | 0.5 | / | |
100 | 8.9 | 8.5 | 0.5 | / | |
200 | 8.9 | 8.4 | 0.5 | / | |
500 | 8.9 | 8.1 | 0.5 | 0.6 |
NA
Description of key information
Not readily biodegradable: 0% DOC removal in 28 days (OECD 301A)
Key value for chemical safety assessment
- Biodegradation in water:
- under test conditions no biodegradation observed
- Type of water:
- freshwater
Additional information
Sodium 3(2H-benzotriazol-2-yl)-5-sec-butyl-4-hydroxybenzenesulfonate was tested in a biodegradation test according to OECD giudeline 301A (modified Afnor-Test) using a concentration of nominally 40 mg/L DOC. The test was left running for 28 days. Glucose was chosen as positive control. Biodegradation of the positve control corrected by the blank control and mesured as DOC (mg/L) was 87.5 % (28th day). The biodegradation of the test item corrected by blank control and measured as DOC (mg/L) is 0 % (28th day). No inhibiton on the activity of the bacteria was found. The test item is therefore evaluated as not ready biodegradable and not bacteric toxic at the test concentration of 40 mg/L.
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