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EC number: 605-140-1 | CAS number: 158237-07-1
- 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
Phototransformation in water
Administrative data
Link to relevant study record(s)
Description of key information
Key value for chemical safety assessment
Additional information
Data on the phototransformation in water is not a standard requirement under Regulation (EC) No. 1907/2006 Annexes VII - X. However, a study is available investigating the phototransformation of the test substance in water (1997), which is summarised here. The quantum yield of direct photodegradation of the test substance in aqueous solution was determined according to the ECETOC - method in polychromatic light.
In both irradiation experiments with simulated sunlight (artificial light source) in a merry-go-round apparatus a weak degradation of the test substance and a weak photoproduct formation was measured by HPLC-UV during the irradiation period. This indicated a good stability of the test substance against direct photodegradation in aqueous solution relative to other compounds irradiated under the same study conditions. From the UV absorption data and the degradation kinetics of both experiments the quantum yield was calculated to be ɸ = 4.94 x 10^-3.
The estimates based on two different arithmetic models (GC-SOLAR and Frank & Klöpffer) by means of the resulting quantum yield and the light absorption in the environmentally relevant range of wavelengths were well comparable when using the identical marginal conditions.
Environmental direct photolysis half-lives are given in the following tables:
GC-SOLAR program:
Season |
Environmental direct photolysis half-life of the test substance [days] |
|||
30thdegree latitude |
40thdegree latitude |
50thdegree latitude |
60thdegree latitude |
|
Spring |
83 |
118 |
194 |
355 |
Summer |
64 |
76 |
96 |
133 |
Fall |
129 |
228 |
> 1 yr |
> 1 yr |
Winter |
245 |
> 1 yr |
> 1 yr |
> 1 yr |
Marginal conditions: pure water from close to the surface (0 - 5 cm depth), 10th degree of longitude, clear sky, typical ozone concentrations in the atmosphere, half-lives integrated over the entire day.
Frank & Klöpffer program:
Month |
Photolysis constant [1/sec.] |
Environmental photolysis half-life of the test substance [days] |
||
minimum |
mean |
maximum |
||
January |
0.836E-09 |
> 1 yr |
> 1 yr |
> 1 yr |
February |
0.318E-08 |
> 1 yr |
> 1 yr |
> 1 yr |
March |
0.113E-07 |
370 |
> 1 yr |
> 1 yr |
April |
0.293E-07 |
150 |
270 |
> 1 yr |
May |
0.470E-07 |
110 |
170 |
> 1 yr |
June |
0.611E-07 |
88 |
130 |
> 1 yr |
July |
0.578E-07 |
92 |
140 |
> 1 yr |
August |
0.523E-07 |
100 |
150 |
> 1 yr |
September |
0.245E-07 |
190 |
330 |
> 1 yr |
October |
0.894E-08 |
> 1 yr |
> 1 yr |
> 1 yr |
November |
0.171E-08 |
> 1 yr |
> 1 yr |
> 1 yr |
December |
0.443E-09 |
> 1 yr |
> 1 yr |
> 1 yr |
Marginal conditions: pure water from close to the surface (0-5 cm depth), stagnant water, geographic and climatic conditions of Germany (50th degree of lat.), no contribution of another mono- or bimolecular elimination process.
Direct photodegradation in aqueous solution is expected to contribute to elimination of the test substance in the environment to a low extent only. But this assessment does not consider any indirect photodegradation mechanisms.
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.
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