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EC number: 230-386-8 | CAS number: 7085-19-0
- 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
Stability: thermal, sunlight, metals
Administrative data
Link to relevant study record(s)
- Endpoint:
- stability: thermal, sunlight, metals, other
- Remarks:
- Stability: thermal, sunlight, metals
- Type of information:
- experimental study
- Adequacy of study:
- supporting study
- Study period:
- 24 January 1991 to 29 April 1991
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
- Qualifier:
- according to guideline
- Guideline:
- EPA OPPTS 830.6313 (Stability to Sunlight, Normal and Elevated Temperature, Metals and Metal Ions)
- Deviations:
- no
- GLP compliance:
- yes (incl. QA statement)
- Test substance thermally stable:
- yes
- Operating temp.:
- >= 20.5 - <= 21 °C
- Operating temp.:
- >= 53 - <= 54.5 °C
- Sublimation:
- not determined
- Transformation products:
- no
- Test substance stable to sunlight:
- yes
- Test substance stable to metals / metal ions:
- yes
- Conclusions:
- Under the conditions of this study, the test material is stable up to 54 °C, to sunlight and to aluminium, tin and iron.
- Executive summary:
The stability of the test material to heat, sunlight and metals was determined in accordance with the standardised guideline EPA OPPTS 830.6313 (Stability to Sunlight, Normal and Elevated Temperature, Metals and Metal Ions), under GLP conditions.
The thermal stability was determined at 21 and 54 °C over a period of 14 days. The stability was determined by measurement of the purity and impurity levels using HPLC with UV detection. A slight increase in the % purity (<1 %) of the major component was observed over the test period. The impurities measured decreased in concentration to varying degrees, the greatest reductions being in impurities 4 and 10, a reduction of 0.22 was observed for both impurities to 0.14 and 1.16 % respectively at 21 °C. It was noted that no reduction in these impurities was observed at 54 °C. Impurity 14 increased after 14 days at 21 °C to double its original value at T0 of 0.07 %. Again it was noted that this increase was not observed at 54 °C. Overall, the test material was considered to be thermally stable up to 54 °C.
The stability to sunlight was determined by exposing samples of the test material to artificial sunlight using the Heraeus Suntest CPS at the highest rating. The samples were exposed continuously for 48 hours. The irradiation range was 300 – 800 nm, the total exposure over the duration of the test was 24.5 x 10^-3Whm^-2. The stability of the samples was determined by measurement of the purity of the major component and the levels of impurities by HPLC with UV detection. Analysis of the samples after exposure showed a slight increase (<1 %) in the concentration of the major component, and a reduction to varying degrees of the impurities. The largest reduction being of impurity 10, which showed a reduction of 0.2 to 1.18 %. A slight increase of impurity 14 was observed from 0.07 to 0.2 %. Overall the test material was considered to be stable to sunlight.
Stability to metals was determined by exposing the test material to ground samples of tin, aluminium and iron and measuring the endothermic and exothermic effects by Differential Scanning Calorimetry (DSC). The DSC was carried out under air and nitrogen atmospheres using graphite DSC pans. The temperature range was room temperature to 150 °C. The addition of the metals had no effect on the endothermic transitions of the test material and produced no additional transitions. No exothermic transitions were observed. The test material is considered stable to metals between room temperature and 150 °C.
Under the conditions of this study, the test material is stable up to 54 °C, to sunlight and to aluminium, tin and iron.
- Endpoint:
- thermal stability
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- 15 April 1999 to 23 June 1999
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 113 (Screening Test for Thermal Stability and Stability in Air)
- Deviations:
- no
- Qualifier:
- according to guideline
- Guideline:
- other: ASTM E 537-76
- Deviations:
- no
- GLP compliance:
- yes (incl. QA statement)
- Test substance thermally stable:
- yes
- Transformation products:
- no
- Conclusions:
- Under the conditions of this study, the test material was found to be thermally stable at room temperature.
- Executive summary:
The thermal stability of the test material was investigated in accordance with the standardised guidelines OECD 113 and ASTM E 537-76, under GLP conditions.
The thermal stability was investigated using differential scanning calorimetry.
The initial investigation showed that endotherms occurred at approximately 95 and 280 °C. The first peak was attributed to the melting of the test material, while the second endotherm was considered to occur due to decomposition of the test material. At the end of this test the sample was observed to have decomposed leaving a trace of brown residue. No other thermal behaviour was noted for the sample up to 150 °C.
Under the terms of OECD guideline the test material is stable at room temperature, because there was no decomposition or chemical change below 150 °C.
Under the conditions of this study, the test material was found to be thermally stable at room temperature.
Referenceopen allclose all
Analytical Results:
Thermal Stability
It was found that the test material was not significantly affected by storage at the selected temperatures. A slight increase in concentration (less than 1 %) was noted. The major impurities generally decreased in concentration to varying degrees, with the exception of major impurity No. 14 which doubled in concentration at 21 °C.
Exposure to Sunlight
It was found that the test material was not significantly affected by exposure to light for a 48 hour period. A slight increase in concentration (less than 1 %) was noted. The major impurities generally decreased in concentration to varying degrees, with the exception of major impurity No. 14 which more than doubled in concentration.
Stability to Metals
It was found that the addition of the metals aluminium, tin and iron had no effect on the endothermic transitions of the test material and produced no additional transitions in the compound. No exothermic transitions were observed.
Summary of Thermal and Light Stability Tests (Original sample concentration: 100 - 150 mg/L)
|
Stability Test |
||||
Thermal |
Sunlight |
||||
Temperature |
Ambient |
21 °C |
54 °C |
Ambient |
Ambient |
Time |
0 Days |
14 Days |
14 Days |
0 Hours |
48 Hours |
Test Material |
|||||
Retention Time (min) |
11.53 |
11.55 |
11.61 |
11.53 |
11.52 |
Peak % Purity |
96.35 |
97.29 |
97.12 |
96.35 |
97.03 |
Impurity No. 1 |
|||||
Retention Time (min) |
3.32 |
3.32 |
3.34 |
3.32 |
3.33 |
Concentration (%) |
0.12 |
0.10 |
0.16 |
0.21 |
0.18 |
Impurity No. 3 |
|||||
Retention Time (min) |
4.77 |
4.81 |
4.80* |
4.77 |
4.78* |
Concentration (%) |
0.11 |
0.07 |
0.06 |
0.11 |
0.12 |
Impurity No. 4 |
|||||
Retention Time (min) |
5.16 |
5.15 |
5.17 |
5.16 |
5.15 |
Concentration (%) |
0.36 |
0.14 |
0.39 |
0.36 |
0.26 |
Impurity No. 6 |
|||||
Retention Time (min) |
6.40 |
6.41 |
6.44 |
6.40 |
6.41 |
Concentration (%) |
0.26 |
0.14 |
0.16 |
0.26 |
0.20 |
Impurity No. 8 |
|||||
Retention Time (min) |
7.10 |
7.08 |
7.10 |
7.10 |
7.03 |
Concentration (%) |
0.13 |
0.08 |
0.09 |
0.13 |
0.11 |
Impurity No. 9 |
|||||
Retention Time (min) |
7.89 |
7.90 |
- |
7.89 |
7.88 |
Concentration (%) |
0.15 |
0.10 |
- |
0.15 |
0.12 |
Impurity No. 10 |
|||||
Retention Time (min) |
8.32 |
8.35 |
8.36 |
8.32 |
8.32 |
Concentration (%) |
1.38 |
1.16 |
1.31 |
1.38 |
1.18 |
Impurity No. 12 |
|||||
Retention Time (min) |
14.95 |
15.06 |
15.16 |
14.95 |
14.95* |
Concentration (%) |
0.36 |
0.29 |
0.20 |
0.36 |
0.26 |
Impurity No. 14 |
|||||
Retention Time (min) |
16.27 |
16.28 |
16.24* |
16.27 |
16.33 |
Concentration (%) |
0.07 |
0.14 |
0.03 |
0.07 |
0.20 |
Impurity No. 18 |
|||||
Retention Time (min) |
18.22 |
18.22 |
18.38 |
18.22 |
18.18 |
Concentration (%) |
0.68 |
0.52 |
0.46 |
0.68 |
0.56 |
* Peak found at this retention time in only one sample of duplicate pair.
Detector Calibration (0 – 230 mg/L)
Standard Concentration (mg/L) |
Peak Area |
237.7 |
27 271 |
190.2 |
20 837 |
142.6 |
15 762 |
95.1 |
10 637 |
47.5 |
5 097 |
23.8 |
2 551 |
Linear regression (inc x = 0, y = 0): y = -189.5 + 113.3x r = 0.9995
Where:
x = Standard concentration (mg/L).
y = Peak area.
The initial investigation showed that endotherms occurred at approximately 95 and 280 °C. The first peak was attributed to the melting of the test material, while the second endotherm was considered to occur due to decomposition of the test material. At the end of this test the sample was observed to have decomposed leaving a trace of brown residue.
The observation of decomposition was consistent with the results of the boiling point test, in which the test material was observed to decompose above 260 °C without boiling.
The subsequent analysis over the temperature range of 80 to 160 °C, showed an endotherm with an extrapolated onset at approximately 93 °C. This peak was confirmed as being due to melting of the test material by reheating the test material under the same conditions and noting that the nature of the endotherm did not change. No other thermal behaviour was noted for the sample up to 150 °C.
Under the terms of OECD guideline the test material is stable at room temperature, because there was no decomposition or chemical change below 150 °C.
Description of key information
Key Study: Comb (2000)
Under the conditions of this study, the test material was found to be thermally stable at room temperature.
Key Study: Cowlyn (1993)
Under the conditions of this study, the test material is stable up to 54 °C, to sunlight and to aluminium, tin and iron.
Additional information
Key Study: Comb (2000)
The thermal stability of the test material was investigated in accordance with the standardised guidelines OECD 113 and ASTM E 537-76, under GLP conditions. The study was awarded a reliability score of 1 in accordance with the criteria set forth by Klimisch et al. (1997).
The thermal stability was investigated using differential scanning calorimetry.
The initial investigation showed that endotherms occurred at approximately 95 and 280 °C. The first peak was attributed to the melting of the test material, while the second endotherm was considered to occur due to decomposition of the test material. At the end of this test the sample was observed to have decomposed leaving a trace of brown residue. No other thermal behaviour was noted for the sample up to 150 °C.
Under the terms of OECD guideline the test material is stable at room temperature, because there was no decomposition or chemical change below 150 °C.
Under the conditions of this study, the test material was found to be thermally stable at room temperature.
Key Study: Cowlyn (1993)
The stability of the test material to heat, sunlight and metals was determined in accordance with the standardised guideline EPA OPPTS 830.6313 (Stability to Sunlight, Normal and Elevated Temperature, Metals and Metal Ions), under GLP conditions. The study was awarded a reliability score of 1 in accordance with the criteria set forth by Klimisch et al. (1997).
The thermal stability was determined at 21 and 54 °C over a period of 14 days. The stability was determined by measurement of the purity and impurity levels using HPLC with UV detection. A slight increase in the % purity (<1 %) of the major component was observed over the test period. The impurities measured decreased in concentration to varying degrees, the greatest reductions being in impurities 4 and 10, a reduction of 0.22 was observed for both impurities to 0.14 and 1.16 % respectively at 21 °C. It was noted that no reduction in these impurities was observed at 54 °C. Impurity 14 increased after 14 days at 21 °C to double its original value at T0 of 0.07 %. Again it was noted that this increase was not observed at 54 °C. Overall, the test material was considered to be thermally stable up to 54 °C.
The stability to sunlight was determined by exposing samples of the test material to artificial sunlight using the Heraeus Suntest CPS at the highest rating. The samples were exposed continuously for 48 hours. The irradiation range was 300 – 800 nm, the total exposure over the duration of the test was 24.5 x 10^-3Whm^-2. The stability of the samples was determined by measurement of the purity of the major component and the levels of impurities by HPLC with UV detection. Analysis of the samples after exposure showed a slight increase (<1 %) in the concentration of the major component, and a reduction to varying degrees of the impurities. The largest reduction being of impurity 10, which showed a reduction of 0.2 to 1.18 %. A slight increase of impurity 14 was observed from 0.07 to 0.2 %. Overall the test material was considered to be stable to sunlight.
Stability to metals was determined by exposing the test material to ground samples of tin, aluminium and iron and measuring the endothermic and exothermic effects by Differential Scanning Calorimetry (DSC). The DSC was carried out under air and nitrogen atmospheres using graphite DSC pans. The temperature range was room temperature to 150 °C. The addition of the metals had no effect on the endothermic transitions of the test material and produced no additional transitions. No exothermic transitions were observed. The test material is considered stable to metals between room temperature and 150 °C.
Under the conditions of this study, the test material is stable up to 54 °C, to sunlight and to aluminium, tin and iron.
Justification for classification or non-classification
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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