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Diss Factsheets
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EC number: 821-932-1 | CAS number: 694510-10-6
- 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
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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:
- June 22, 2018 - June 28, 2018
- 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:
- no
- Type of method:
- column elution method
- Key result
- Water solubility:
- < 0.03 mg/L
- Conc. based on:
- test mat.
- Incubation duration:
- 48 h
- Temp.:
- 20 °C
- pH:
- >= 6.5 - <= 7
- Conclusions:
- The water solubility of the test item at a temperature of 20°C was determined according to the column elution method. It was found to be below the quantification limit: < 0.03 mg/L
- Executive summary:
The water solubility of the test item was determined according to OECD 105 and Regulation (EC) No. 440/2008 method A.6 using the column elution method with HPLC analysis. About 100.1 mg of the test item were dissolved in 100 mL acetone. For charging the columns in each case 25 mL of the test item solution was added to about 3 g of sea sand and the mixtures were shaken. The solvent was then removed under reduced pressure using a rotary evaporator (40 °C, approx. 10mbar). The dry residues were placed into the columns of the test apparatus, which have afterwards been filled with water (test temperature: 20 °C; water pH at 23 °C: 6.0). After a swelling time of 2 h pumps were started to rinse the test item coated sand with demineralized water. At the end of the study it was confirmed that residual test item remained on the columns. The residual test item was eluted with 50 mL acetone. The concentration of test item was determined by means of HPLC. The pH of each sample was recorded. The water solubility of the test item at a temperature of 20°C was found to be below the quantification limit: < 0.03 mg/L.
Reference
Table 1: Recovery
All recovery values are calculated from the measured and unrounded concentration values and not from the rounded values given in Table 1. The recovery of the standards indicated a sufficient accuracy of the analytical method.
Standard | Measured concentration /mg/L | % Recovery (mean values) |
A2 (c = 3.360 mg/L) |
3.891 /3.776 |
114.1 |
B1 (c= 12.56 mg/L) |
13.78/13.69 |
109.3 |
C1 (c= 13.20 mg/L) |
13.70/13.59 |
103.4 |
A1 (c = 33.60 mg/L) |
39.96 / 37.86 |
115.8 |
Table 2: Repeatability
The repeatability was checked by measuring standard H2 six-fold. The resulting area was used to calculate the standard deviation and the variation coefficient.
Measurement No. | Area / mAU*s |
1 | 107.165 |
2 | 106.862 |
3 | 106.360 |
4 | 105.317 |
5 | 109.549 |
6 | 106.272 |
Mean value | 106.9 |
Standard deviation | 1.4 |
Variation coefficient / % | 1.3 |
The accuracy of the analytical method was evaluated as sufficient as the variation coefficient of the repeatability measurements was < 2.
Three preliminary tests were carried out with specified amounts of the test item and 100 mL and 500 mL demineralized water, respectively. After each addition of an amount of water, the mixture was stirred for at least 24 hours, and visually checked for any undissolved particles.
Table 3: Results of the preliminary test
Amount of test item / mg |
Total volume of demineralized water / mL |
Appearance of mixture |
12.1 | 100 | not dissolved |
23.1 |
500 |
not dissolved |
4.3 |
500 |
not dissolved |
The preliminary test showed that the water solubility of the test item is < 10 mg/L. According to the preliminary test the water solubility was determined by the column elution method in the main test.
Table 4: Column elution method, column 1 (approximately 12.5 mL/h)
Fraction No. |
V/mL |
pH |
water solubility /µg/L |
12-14 |
57.0 |
6.5-6.8 |
<28 |
15-17 |
57.0 |
6.5-6.8 |
<28 |
18-20 |
57.0 |
6.5-6.8 |
<28 |
21-23 |
57.0 |
6.5-6.8 |
<28 |
24-26 |
57.0 |
6.5-6.8 |
<28 |
Column 1: Rotation period of the fraction collector: 90 min per fraction Duration of sampling: about 48 h (32 fractions)
The water solubility was found to be below the quantification limit of 28 µg/L.
Table 5: Column elution method, column 2 (approximately 25 mL/h)
Fraction No. |
V/mL |
pH |
water solubility /µg/L |
43-45 |
55.5 |
6.6-7.0 |
<28 |
46-48 |
54.5 |
6.6-6.7 |
<28 |
49-51 |
54.0 |
6.7-6.9 |
<28 |
52-54 |
54.0 |
6.8-6.9 |
<28 |
55-57 |
54.0 |
6.7-7.0 |
<28 |
Column 1: Rotation period of the fraction collector: 45 min per fraction Duration of sampling: about 48 h (64 fractions)
The water solubility was found to be below the quantification limit of 28 µg/L.
In both columns the concentration of five consecutive fractions was constant within ± 30 %. No increasing or decreasing tendency was observed.
Table 6: Coating check
|
Amount of test item used for coating /mg |
Measured concentration of test item in eluate /mg/L |
Amount of test item eluted / mg |
Column 12.5 mL/h |
25 |
15.864/15.511 |
15.7 |
Column 25 mL/h |
21.828/21.553 |
21.7 |
The coating check was successful. Enough test item remained on the columns. The water solubility cs of the test item was below the quantification limit of 28 µg/L (mean value of the columns).
Description of key information
The water solubility of the test item at a temperature of 20°C was determined using the column elution method. It was found to be below the quantification limit: < 0.03 mg/L
Key value for chemical safety assessment
Additional information
The water solubility of the test item was determined according to OECD 105 and Regulation (EC) No. 440/2008 method A.6 using the column elution method with HPLC analysis (reference 4.8-1). About 100.1 mg of the test item were dissolved in 100 mL acetone. For charging the columns in each case 25 mL of the test item solution was added to about 3 g of sea sand and the mixtures were shaken. The solvent was then removed under reduced pressure using a rotary evaporator (40 °C, approx. 10mbar). The dry residues were placed into the columns of the test apparatus, which have afterwards been filled with water (test temperature: 20 °C; water pH at 23 °C: 6.0). After a swelling time of 2 h pumps were started to rinse the test item coated sand with demineralized water. At the end of the study it was confirmed that residual test item remained on the columns. The residual test item was eluted with 50 mL acetone. The concentration of test item was determined by means of HPLC. The pH of each sample was recorded. The water solubility of the test item at a temperature of 20°C was found to be below the quantification limit: < 0.03 mg/L.
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