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EC number: 609-076-5 | CAS number: 35139-67-4
- 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:
- 30/11/2017 to 11/12/2017
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 2 018
- Report date:
- 2018
Materials and methods
Test guidelineopen allclose all
- 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:
- flask method
Test material
- Reference substance name:
- 2,4-Diamino-6-chloropyrimidine-3-oxide
- EC Number:
- 609-076-5
- Cas Number:
- 35139-67-4
- Molecular formula:
- C4H5ClN4O
- IUPAC Name:
- 2,4-Diamino-6-chloropyrimidine-3-oxide
- Test material form:
- solid
- Remarks:
- white/beige solid
Constituent 1
- Specific details on test material used for the study:
- - Analytical purity: > 99% - Lot/batch No.: 0160405 - Expiration date of the lot/batch: 21/02/2018
Results and discussion
Water solubility
- Key result
- Water solubility:
- ca. 1 786.31 mg/L
- Conc. based on:
- test mat.
- Loading of aqueous phase:
- 12 g/L
- Incubation duration:
- > 0 - <= 72 h
- Temp.:
- 20 °C
- pH:
- >= 7.55 - <= 8.84
Any other information on results incl. tables
All measurements of flasks 2 - 6 were included in the calculation of the mean.
Table8.3‑a Measurements used for Calculation of Solubility
Day | Flask | Concentration [mg/L] | TotalMean[mg/L] | Total StandardDeviation[mg/L] (RSD* [%]) |
6 | 2 | 1811.39 | 1786.31 | 16.34 (0.9) |
6 | 3 | 1772.42 | ||
6 | 4 | 1784.01 | ||
6 | 5 | 1791.91 | ||
6 | 6 | 1771.83 |
*RSD = relative standard deviation
Mean at the plateau is 1786.31 ± 16.34 mg/L.
The solubility of the test itemin water was determined from the measured concentrations of the test item in the filtrated test solutions.
Equilibration time can be considered as approx. 2 days, as the values which were measured were within ± 15 % of the measurements on previous days and no rising tendency was observed.
The concentration was measured in the flasks 2 – 6 after 6 days of shaking. The solubility ofthe test itemin water at 20 ± 0.3 °C was 1786.31 mg/L (mean from two measurements each in five individual flasks). All replicates showed good correspondence. The standard deviation of the samples which were used for the calculation of water solubility at the plateau was 16.34 mg/L, corresponding to a relative standard deviation of 0.9 %.
No observations arousing doubts concerning the accuracy of the results and the validity of the study were made.
Applicant's summary and conclusion
- Conclusions:
- At the plateau, the concentration of the test item in water had reached 1786.31 ± 16.34 mg/L at 20.0 ± 0.3 °C (mean value ± standard deviation of five individual vessels).
- Executive summary:
The solubility of the test item in water was determined in GLP compliance according to the OECD TG 105 with the shake flask method, and measured in the filtrated test solutions using HPLC.
In the pre-test, no concentration dependency was observed. According to the guideline, the flask method was used for the determination of the solubility of the test item in water.
In the main test, five identical loading rates of the test item were chosen: 12 g/L (nominal), corresponding to at least 5fold excess of the test item were chosen for the main test. Three flasks 1A - C with the same loading rate (12 g/L) were used during equilibration. Seven vessels (flasks blank, 1C (for the sampling point 72 h) and 2 – 6) were set onto the shaking apparatus immediately. After 24 ± 2 hours, flask 1B (for the sampling point 48 h) and after 48 ± 2 hours, flask 1A (for the sampling point 24 h) were set on the shaker and all flasks were shaken for further 24 ± 2 hours at room temperature (20.0 ± 0.5 °C). Then, flasks 1A - 1C were taken from the shaker, samples were taken, membrane filtered and analysed. No rising tendency in the test item concentration of the solutions were observed. Equilibrium was considered as reached at latest after 3 d after test start.
No Tyndall effect (i.e. a laser beam was scattered when transmitted through the liquid) could be observed indicating that colloidal dispersed particles or micelles are present.
At the plateau, the concentration of MEXORYL SAG/10 lyophilisé in water had reached
1786.31 ± 16.34 mg/L at 20.0 ± 0.3 °C
= 1.7863 ± 0.0163 kg/m3 (SI units)
(mean value ± standard deviation of five individual vessels)
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