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EC number: 945-733-5 | CAS number: -
- 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
Water solubility
Administrative data
Link to relevant study record(s)
- Endpoint:
- water solubility
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- 09 October 2017 to 03 November 2017
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 105 (Water Solubility)
- Deviations:
- no
- Qualifier:
- according to guideline
- Guideline:
- EU Method A.6 (Water Solubility)
- Deviations:
- no
- GLP compliance:
- yes (incl. QA statement)
- Type of method:
- column elution method
- Water solubility:
- 1.3 other: mg Sm2C3O9 /L
- Conc. based on:
- other: Expressed as Sm2C3O9 content in water
- Temp.:
- 20 °C
- pH:
- 6.5
- Water solubility:
- 0.2 other: mg Eu2C3O9 /L
- Conc. based on:
- other: expressed as Eu2C3O9 content in water
- Temp.:
- 20 °C
- pH:
- 6.5
- Water solubility:
- 0.6 other: mg Gd2C3O9 /L
- Conc. based on:
- other: expressed as Gd2C3O9 content in water
- Temp.:
- 20 °C
- pH:
- 6.5
- Details on results:
- The result for solubility in water of the element samarium was 0.8 mg samarium/L in water at pH 6.5 and 20 °C, extrapolated to 1.3 mg disamarium tricarbonate/L in water.
The result for solubility in water of the element europium was 0.2 mg europium/L in water at pH 6.5 and 20 °C, extrapolated to 0.2 mg dieuropium tricarbonate/L in water.
The result for solubility in water of the element gadolinium was 0.4 mg gadolinium/L in water at pH 6.5 and 20 °C, extrapolated to 0.6 mg digadolinium tricarbonate/L in water. - Conclusions:
- Under the conditions of the test, the mean solubility in water at pH 6.5 is as follows:
The mean solubility of samarium is 1.3 mg Sm2C3O9 /L at 20 °C (expressed as Sm2C3O9 content in water).
The mean solubility of europium is 0.2 mg Eu2C3O9 /L at 20 °C (expressed as Eu2C3O9 content in water).
The mean solubility of gadolinium is 0.6 mg Gd2C3O9 /L at 20 °C (expressed as Gd2C3O9 content in water). - Executive summary:
The water solubility of the test material was assessed according to OECD Test Guideline 105 and EU Method A.6 using the column elution method.
A preliminary test was conducted using the flask method in which the test material (100 or 10 mg) was mixed at room temperature with increasing volumes of water (0.1 to 1000 mL); mixtures were equilibrated at the test temperature and the solubility estimated for each volume by visually checking for undissolved test material. The solubility of the test material was < 0.01 g/L and therefore the main test was conducted using the column elution method.
Samples were injected into the analytical system. The intensity was measured for the analyte and the internal standard, then the intensity ratio was calculated. The concentration of analyte was plotted versus the intensity ratio obtained in the calibration solutions.
The result for solubility in water of the element samarium was 0.8 mg samarium/L in water at pH 6.5 and 20 °C, extrapolated to 1.3 mg disamarium tricarbonate/L in water.
The result for solubility in water of the element europium was 0.2 mg europium/L in water at pH 6.5 and 20 °C, extrapolated to 0.2 mg dieuropium tricarbonate/L in water.
The result for solubility in water of the element gadolinium was 0.4 mg gadolinium/L in water at pH 6.5 and 20 °C, extrapolated to 0.6 mg digadolinium tricarbonate/L in water.
Reference
Mean Solubility of Samarium
|
Flow rate (mL/h) |
Solubility expressed as Samarium content in water (mg/L) |
Solubility of disamarium tricarbonate in water * (mg/L) |
Mean pH measured |
Temperature (°C) |
Test 1 |
25 |
0.98 |
- |
6.5 |
20 |
Test 2 |
25 |
0.79 |
- |
6.5 |
20 |
Mean of Test 1 and Test 2 |
25 |
0.89 |
- |
6.5 |
20 |
Test 3 |
12.5 |
0.69 |
- |
6.5 |
20 |
Mean |
12.5 and 25 |
0.82 |
1.3 |
6.5 |
20 |
* Extrapolation using the conversion factor e = Mw Sm2C3O9 / Mw 2Sm = 481 / 300 =1.60
Mean Solubility of Europium
|
Flow rate (mL/h) |
Solubility expressed as Europium content in water (mg/L) |
Solubility of disamarium tricarbonate in water * (mg/L) |
Mean pH measured |
Temperature (°C) |
Test 1 |
25 |
0.18 |
- |
6.5 |
20 |
Test 2 |
25 |
0.14 |
- |
6.5 |
20 |
Mean of Test 1 and Test 2 |
25 |
0.16 |
- |
6.5 |
20 |
Test 3 |
12.5 |
0.13 |
- |
6.5 |
20 |
Mean |
12.5 and 25 |
0.15 |
0.24 mg/L rounded at 0.2 mg/L |
6.5 |
20 |
* Extrapolation using the conversion factor e = Mw Eu2C3O9 / Mw 2Eu= 484 / 304 =1.59
Mean Solubility of Gadolinium
|
Flow rate (mL/h) |
Solubility expressed as Gadoliniuum content in water (mg/L) |
Solubility of disamarium tricarbonate in water * (mg/L) |
Mean pH measured |
Temperature (°C) |
Test 1 |
25 |
0.47 |
- |
6.5 |
20 |
Test 2 |
25 |
0.38 |
- |
6.5 |
20 |
Mean of Test 1 and Test 2 |
25 |
0.43 |
- |
6.5 |
20 |
Test 3 |
12.5 |
0.32 |
- |
6.5 |
20 |
Mean |
12.5 and 25 |
0.39 |
0.61 mg/L rounded at 0.6 mg/L |
6.5 |
20 |
* Extrapolation using the conversion factor e = Mw Gd2C3O9 / Mw 2Gd = 494 / 314 =1.57
Description of key information
Under the conditions of the test, the mean solubility in water at pH 6.5 is as follows:
The mean solubility of samarium is 1.3 mg Sm2C3O9 /L at 20 °C (expressed as Sm2C3O9 content in water).
The mean solubility of europium is 0.2 mg Eu2C3O9 /L at 20 °C (expressed as Eu2C3O9 content in water).
The mean solubility of gadolinium is 0.6 mg Gd2C3O9 /L at 20 °C (expressed as Gd2C3O9 content in water).
Key value for chemical safety assessment
Additional information
The water solubility of the test material was assessed according to OECD Test Guideline 105 and EU Method A.6 using the column elution method.
A preliminary test was conducted using the flask method in which the test material (100 or 10 mg) was mixed at room temperature with increasing volumes of water (0.1 to 1000 mL); mixtures were equilibrated at the test temperature and the solubility estimated for each volume by visually checking for undissolved test material. The solubility of the test material was < 0.01 g/L and therefore the main test was conducted using the column elution method.
Samples were injected into the analytical system. The intensity was measured for the analyte and the internal standard, then the intensity ratio was calculated. The concentration of analyte was plotted versus the intensity ratio obtained in the calibration solutions.
The result for solubility in water of the element samarium was 0.8 mg samarium/L in water at pH 6.5 and 20 °C, extrapolated to 1.3 mg disamarium tricarbonate/L in water.
The result for solubility in water of the element europium was 0.2 mg europium/L in water at pH 6.5 and 20 °C, extrapolated to 0.2 mg dieuropium tricarbonate/L in water.
The result for solubility in water of the element gadolinium was 0.4 mg gadolinium/L in water at pH 6.5 and 20 °C, extrapolated to 0.6 mg digadolinium tricarbonate/L in water.
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