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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
Hydrolysis
Administrative data
Link to relevant study record(s)
- Endpoint:
- hydrolysis
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- 1988-03-18 to 1988-03-23
- 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 111 (Hydrolysis as a Function of pH)
- Deviations:
- no
- Qualifier:
- according to guideline
- Guideline:
- other: EEC guideline L25/C.10
- Deviations:
- no
- Principles of method if other than guideline:
- Hydrolysis of test substance at 50 °C and pH 4, 7 and 9 for the preliminary test.
- GLP compliance:
- no
- Radiolabelling:
- no
- Analytical monitoring:
- yes
- Details on sampling:
- no data
- Buffers:
- - pH: 4
- Composition of buffer: 10.2 g of potassium biphthalate diluted to 1000 mL with water.
- pH: 7
- Composition of buffer: 29.0 ml of 1 N NaOH + 6.80 g of monopotassium phosphate diluted to 1000 ml with water.
- pH: 9
- Composition of buffer: 21.0 ml of 1 N NaOH + 3.08 g of boric acid + 3.72 g of KCl diluted to 1000 ml with water - Details on test conditions:
- The hydrolysis was examined at three different pH values 4,7 and 9 in the dark.
- Temperature: 50 °C
- 0.050 g test substance is accurately weighed into a brown 250 mL with the buffer solutions pH 4, pH 7 and pH 9 respectively.
- The hydrolysis is carried out in a thermostatically controlled water bath.
- After reaction time, 10 mL of the test solution is neutralized and diluted with water to 50 mL. - Duration:
- 5 d
- pH:
- 4
- Temp.:
- 50 °C
- Initial conc. measured:
- 0.202 - 0.204 g/L
- Duration:
- 5 d
- pH:
- 7
- Temp.:
- 50 °C
- Initial conc. measured:
- 0.202 - 0.203 g/L
- Duration:
- 5 d
- pH:
- 9
- Temp.:
- 50 °C
- Initial conc. measured:
- 0.201 - 0.205
- Number of replicates:
- 2
- Positive controls:
- no
- Negative controls:
- no
- Statistical methods:
- NA
- Preliminary study:
- At 50°C the hydrolysis of test item is less than 10 % at pH 4, 7 and 9. The test item is stable at pH 4, 7 and 9 and 50°C: it has a half-life period longer than one year at 25 °C at pH 4, 7 and 9.
- Test performance:
- no remarks
- Transformation products:
- no
- Details on hydrolysis and appearance of transformation product(s):
- NA
- % Recovery:
- < 10
- pH:
- 4
- Temp.:
- 50 °C
- Duration:
- 5 d
- % Recovery:
- < 10
- pH:
- 7
- Temp.:
- 50 °C
- Duration:
- 5 d
- % Recovery:
- < 10
- pH:
- 9
- Temp.:
- 50 °C
- Duration:
- 5 d
- Key result
- pH:
- 4
- Temp.:
- 50 °C
- Remarks on result:
- hydrolytically stable based on preliminary test
- Key result
- pH:
- 7
- Temp.:
- 50 °C
- Remarks on result:
- hydrolytically stable based on preliminary test
- Key result
- pH:
- 9
- Temp.:
- 50 °C
- Remarks on result:
- hydrolytically stable based on preliminary test
- Other kinetic parameters:
- NA
- Details on results:
- At 50 °C the hydrolysis of the test item is less than 10 % at pH 4,7 and 9.
- Validity criteria fulfilled:
- yes
- Conclusions:
- Sodium 3(2H-benzotriazol-2-yl)-5-sec-butyl-4-hydroxybenzenesulfonate is stable at pH 4,7 and 9 at 50 °C: it has a half-life period longer than one year at 25 °C at pH 4,7 and 9.
- Executive summary:
The stability of sodium 3(2H-benzotriazol-2-yl)-5-sec-butyl-4-hydroxybenzenesulfonate in water was investigated according to OECD guideline 111. The hydrolysis of the test item was investigated at 50 °C and pH 4, 7 and 9 in the preliminary test. At 50°C the hydrolysis of test item was less than 10 % at pH 4, 7 and 9. The test item is thus considered stable at pH 4, 7 and 9 and 50°C with a half-life of more than 1 year at 25 °C and pH 4, 7 and 9.
Reference
NA
Description of key information
Abiotic degradation via hydrolysis is not considered to be a relevant degradation pathway for this substance.
Key value for chemical safety assessment
Additional information
The stability of sodium 3(2H-benzotriazol-2-yl)-5-sec-butyl-4-hydroxybenzenesulfonate in water was investigated according to OECD guideline 111. The hydrolysis of the test item was investigated at 50 °C and pH 4, 7 and 9 in the preliminary test. At 50°C the hydrolysis of test item was less than 10 % at pH 4, 7 and 9. The test item is thus considered stable at pH 4, 7 and 9 and 50°C with a half-life of more than 1 year at 25 °C and pH 4, 7 and 9.
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