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EC number: 694-898-7 | CAS number: 23121-00-8
- 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
- Endpoint:
- water solubility
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- 03 Sep - 25 Sep 2015
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- guideline study with acceptable restrictions
- Remarks:
- Water solubility of test item below quantification limit.
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 2 015
- Report date:
- 2015
Materials and methods
Test guidelineopen allclose all
- Qualifier:
- according to guideline
- Guideline:
- EU Method A.6 (Water Solubility)
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 105 (Water Solubility)
- GLP compliance:
- no
- Type of method:
- column elution method
Test material
- Reference substance name:
- 4-(2-phenylpropan-2-yl)phenyl 4-oxo-3-(λ⁵-diazynylidene)-3,4-dihydronaphthalene-1-sulfonate
- Cas Number:
- 23121-00-8
- Molecular formula:
- C25H20N2O4S
- IUPAC Name:
- 4-(2-phenylpropan-2-yl)phenyl 4-oxo-3-(λ⁵-diazynylidene)-3,4-dihydronaphthalene-1-sulfonate
- Test material form:
- solid
Constituent 1
- Specific details on test material used for the study:
- Storage conditions: Ambient temperature (10 to 30 °C), protected from light
Results and discussion
Water solubility
- Water solubility:
- < 0.02 mg/L
- Conc. based on:
- test mat. (dissolved fraction)
- Temp.:
- 20 °C
- pH:
- >= 7 - <= 7.6
Any other information on results incl. tables
Results
Preliminary visual estimation
Three preliminary tests were executed with specified test item amounts
and 100 mL and 500 mL distilled water, respectively. After each addition
of water, the mixture was stirred for at least 24 h and visually checked
for undissolved particles.
Table 1 – Preliminary water solubility test results
Test item amount [mg] |
Total volume [mL] |
Mixture appearance |
15.7 |
100 |
Undissolved |
11.0 |
500 |
|
3.2 |
500 |
The test item solubility in water was found to be below 6.2 mg/L (without correction for purity). The column elution method was used for the main test.
Column elution method
106.9 mg of test item were dissolved in 100 mL acetone. For charging the
columns in each case 25 mL of test item solution were added to ca. 3 g
of sea sand and the mixtures were shaken. The solvent was then removed
under reduced pressure using a rotary evaporator (40 °C, ca. 20 mbar).
The dry residues were placed into the columns of the test apparatus,
which were then filled with water (test temperature: 20 °C, water pH at
22 °C: 5.3). After a swelling time of 2 h, the sand coated test item was
rinsed with distilled water by pumps. At the end of the study, it was
confirmed that residual test item remained on the columns, 50 mL acetone
were used to elute the test item.
Distilled water was used as a blank value, no signal was detected in the range of the test item retention time. Test item concentration was quantified by HPLC.
Column 12.5 mL/h
Rotation period of the fraction collector: 90 min per fraction
Sampling duration: ~ 68 h (45 fractions)
Table 2 – Column elution method results
Fraction no. |
V [mL] |
pH |
Water solubility [µg/L] |
25 |
19.0 |
7.5 |
< 21.1 |
26 |
7.4 |
||
27 |
19.1 |
7.1 |
|
28 |
7.0 |
||
29 |
7.2 |
Column 25.0 mL/h
Rotation period of the fraction collector: 45 min per fraction
Sampling duration: ~ 68 h (90 fractions)
Table 3 – Column elution method results
Fraction no. |
V [mL] |
pH |
Water solubility [µg/L] |
53 |
18.7 |
7.6 |
< 21.1 |
54 |
7.2 |
||
55 |
7.1 |
||
56 |
7.0 |
||
57 |
7.4 |
Water solubility was found to be below the quantification limit of 21.1 µg/L. In both columns, the concentration of the five consecutive fractions was constant within ±30%. No increasing nor decreasing tendency was seen.
Conclusion: The water solubility of the test item at a temperature of 20 °C was determined to be below the quantification limit: < 0.02 mg/L.
Applicant's summary and conclusion
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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