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EC number: 279-015-1 | CAS number: 78952-61-1
- 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)
Description of key information
From the result of the pretest at pH 4 a half-life period at 25°C of ≥1 year can be estimated. From the result of the pretest at pH 9 and pH 11 a half-life period at 25°C of less than one day can be estimated.
A half-life of 6 days at 25°C was extrapolated from the results of the main test.
Key value for chemical safety assessment
- Half-life for hydrolysis:
- 6 d
- at the temperature of:
- 25 °C
Additional information
The objective of this study was the determination of the abiotic degradation of the test substance (the main compound) under hydrolysis conditions according to guideline 84/449/EWG, appendix V, C. 10.;hydrolysis rate as a function of the pH-value.
The fate of the test substance at different pH (4, 7, 9, and 11) and temperatures was investigated.
From the result of the pre-test at 50°C at pH 4 a half-life period at 25°C of ≥1 year can be estimated. After 2.4 hours a slight decomposition of the ester dye was recognized; after 5 days, the degradation amounted to about 10.6% without clearly visible increase of another peak.
At pH 7 and 50°C, significant decomposition was observed. After 2.4 hours a clear increase of a peak with a retention time of 14.2 min ( SA 01 bis-vinyl) was found which was accompanied by a decrease of the ester dye in the same size. After 5 days only a main peak with a retention time of 17.4 min ( SA 01-OH) was found.
In the main test at pH 7 – at temperatures of 50, 60, and 70°C for up to 5.8, 2.5, and 0.67 hours, respectively – a half-life of 6 days was extrapolated for 25°C. The degradation of the ester dye at pH 7 and the different temperatures was accompanied by an increase of the peak with a retention time of ca. 14.5 min ( SA 01 bis-vinyl) and a slight increase of the peak with a retention time of ca. 17 min ( SA 01-OH).
The pre-test at 50°C at pH 9 and pH 11 led to a complete decomposition of the dye at both pH and time points. Due to the fact that the decomposition was higher than 50% after 2.4 hours at 50°C, no further experiments were carried out (in compliance with the test guideline) at pH 9 and pH 11. A half-life period of less than one day at 25°C was estimated based on this data.
At pH = 9.0, only one peak at a retention time of 17.4 min ( SA 01-OH) could be detected after 2.4 h. The ester dye was completely hydrolysed. After 5 days, no coloured components could be identified.
At pH = 11, at both time points only several peaks of decomposition products could be found.
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