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EC number: 210-441-2 | CAS number: 615-66-7
- 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
Partition coefficient
Administrative data
Link to relevant study record(s)
- Endpoint:
- partition coefficient
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
- Justification for type of information:
- Data is from experimental study report.
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 107 (Partition Coefficient (n-octanol / water), Shake Flask Method)
- Principles of method if other than guideline:
- - Principle of test:The Nernst partition law applies at constant temperature, pressure and pH for dilute solutions. It strictly applies to a pure substance dispersed between two pure solvents and when the concentration of the solute in either phase is not more than 0.01 mol/l.
A stock solution of the test substance is shaken in a two-phase system of water and n-octanol. The concentration of the test substance in the two phases is analysed with an appropriate analytical method. - GLP compliance:
- not specified
- Type of method:
- flask method
- Partition coefficient type:
- octanol-water
- Specific details on test material used for the study:
- SOURCE OF TEST MATERIAL
- Test substance (as cited in the study report): 2-chloro-1,4-diamino benzene
- Batch No.of test material:10-05-18/ 44
- Expiration date of the lot/batch: No data
- Purity: 99.8% (100% - 0.2% water)
- Appearance: Dark grey flakes - Analytical method:
- other: UV/VIS Spectroscopy
- Key result
- Type:
- log Pow
- Partition coefficient:
- 0.44
- Temp.:
- 20 °C
- Remarks on result:
- other: Hydrophilic in nature.
- Conclusions:
- The partition coefficient (log Pow) of the test substance 2-chloro-p-phenylenediamine was determined according to the OECD Guideline for the testing of chemicals 107. The octanol-water partition coefficient (log Pow) of the test substance 2-chloro-p-phenylenediamine was determined to be 0.44 at 20 -25 degC. This value indicates that the substance 2-chloro-p-phenylenediamine is hydrophilic in nature which is also supported by its solubility in water.
- Executive summary:
The partition coefficient (log Pow) of the test substance 2-chloro-p-phenylenediamine was determined according to the OECD Guideline for the testing of chemicals 107.
Result:
Determination No.
Ratio n-octanol : water
Log Pow
A1
2:1
0.43
A2
2:1
0.45
B1
1:1
0.44
B2
1:1
0.44
C1
1:2
0.45
C2
1:2
0.44
Mean
---
0.44
The octanol-water partition coefficient (log Pow) of the test substance 2-chloro-p-phenylenediamine was determined to be 0.44 at 20 -25 degC. This value indicates that the substance 2-chloro-p-phenylenediamine is hydrophilic in nature which is also supported by its solubility in water.
Reference
Result in detail:
Determination no. |
Stock solution (ml) |
n-octanol |
Test substance conc. in water phase (mg/L) |
Test substance conc. in n-octanol phase (mg/L) |
Log Pow |
A1 |
5 |
10 |
117.3 |
315.3 |
0.43 |
A2 |
5 |
10 |
115.7 |
327.1 |
0.45 |
B1 |
10 |
10 |
197.3 |
547.3 |
0.44 |
B2 |
10 |
10 |
196.1 |
545.5 |
0.44 |
C1 |
20 |
10 |
305.0 |
852.0 |
0.45 |
C2 |
20 |
10 |
308.1 |
851.0 |
0.44 |
Mean |
-- |
-- |
-- |
-- |
0.44 |
Recovery rate of test substance:
Determination no. |
Test substance in stock solution (mg) |
Test substance in water phase (mg) |
Test substance in n-octanol phase (mg) |
Sum (mg) |
Recovery rate [%] |
A1 |
3.71 |
0.59 |
3.15 |
3.74 |
101 |
A2 |
3.71 |
0.58 |
3.27 |
3.85 |
104 |
B1 |
7.42 |
1.97 |
5.47 |
7.45 |
100 |
B2 |
7.42 |
1.96 |
5.46 |
7.42 |
100 |
C1 |
14.82 |
6.10 |
8.52 |
14.62 |
99 |
C2 |
14.82 |
6.16 |
8.51 |
14.67 |
99 |
Description of key information
The partition coefficient (log Pow) of the test substance 2-chloro-p-phenylenediamine was determined according to the OECD Guideline for the testing of chemicals 107.
Result:
Determination No. |
Ratio n-octanol : water |
Log Pow |
A1 |
2:1 |
0.43 |
A2 |
2:1 |
0.45 |
B1 |
1:1 |
0.44 |
B2 |
1:1 |
0.44 |
C1 |
1:2 |
0.45 |
C2 |
1:2 |
0.44 |
Mean |
--- |
0.44 |
The octanol-water partition coefficient (log Pow) of the test substance 2-chloro-p-phenylenediamine was determined to be 0.44 at 20 -25 degC. This value indicates that the substance 2-chloro-p-phenylenediamine is hydrophilic in nature which is also supported by its solubility in water.
Key value for chemical safety assessment
- Log Kow (Log Pow):
- 0.44
- at the temperature of:
- 20 °C
Additional information
The partition coefficient (log Pow) of the test substance 2-chloro-p-phenylenediamine was determined according to the OECD Guideline for the testing of chemicals 107. The octanol-water partition coefficient (log Pow) of the test substance 2-chloro-p-phenylenediamine was determined to be 0.44 at 20-25 degC.
Based on the supporting study from predictive models, the octanol-water partition coefficient (log Pow) of 2-chloro-p-phenylenediamine was estimated by KOWWIN Program (v1.68) of EPI suite. The octanol-water partition coefficient (log Kow) of 2-chloro-p-phenylenediamine was estimated to be 0.25 at 25 degC.
Based on the experimental and estimated values, the substance 2-chloro-p-phenylenediamine can be considered as hydrophilic in nature which is also supported by its solubility in water.
As the data from the experimental study has K1 reliability and the test was performed using OECD guidelines which has the value of Log Pow as 0.44 at 20-25°C, indicating that 2-chloro-p-phenylenediamine is hydrophilic in nature., thus considered as key study for the chemical safety assessment.
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