Registration Dossier
Registration Dossier
Diss Factsheets
Use of this information is subject to copyright laws and may require the permission of the owner of the information, as described in the ECHA Legal Notice.
EC number: 227-678-2 | CAS number: 5932-68-3
- 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
- Study period:
- From July 19, 1995 to February 07, 1996
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
- Remarks:
- The study was conducted according to an internationally recognised method, and under GLP. No deviation affected the quality of the study. The substance is considered to be adequately characterised with its purity. Therefore full validation applies.
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 117 (Partition Coefficient (n-octanol / water), HPLC Method)
- Deviations:
- no
- Qualifier:
- according to guideline
- Guideline:
- EU Method A.8 (Partition Coefficient)
- Deviations:
- no
- Principles of method if other than guideline:
- Not applicable
- GLP compliance:
- yes
- Type of method:
- HPLC method
- Remarks:
- Reverse phase HPLC method
- Partition coefficient type:
- octanol-water
- Analytical method:
- high-performance liquid chromatography
- Key result
- Type:
- log Pow
- Partition coefficient:
- 2.1
- Temp.:
- 25 °C
- Remarks on result:
- other: trans isomer
- Conclusions:
- The substance has low potential to bioaccumulate in the environment, according to CLP classification criteria for aquatic chronic toxicity (log Kow <4).
- Executive summary:
The partition coefficient of the test substance was measured according to the OECD 117/EU A8 guideline, reverse phase HPLC method. The system was calibrated with 7 reference substances, with log Pow ranging between 0.9 and 5.7. The result was interpolated from the linear regression.
Partition coefficient (log Pow) = 2.1 at 25°C
Reference
Table 4.7/2: Partition Coefficient Determination by Reverse-Phase HPLC
Substance |
log Pow |
tR1 |
tR2 |
tRm |
k |
log k |
Thiourea |
- |
1.36 |
1.37 |
1.36 |
|
|
Aniline |
0.9 |
2.06 |
2.06 |
2.06 |
0.506 |
-0.295 |
Acetophenone |
1.7 |
2.47 |
2.47 |
2.47 |
0.807 |
-0.093 |
Benzophenone |
3.2 |
4.50 |
4.49 |
4.49 |
2.293 |
0.360 |
Naphthalene |
3.6 |
5.44 |
5.43 |
5.44 |
2.984 |
0.475 |
1,2,4-trichlorobenzene |
4.2 |
8.76 |
8.74 |
8.75 |
5.414 |
0.734 |
n-butylbenzene |
4.6 |
11.12 |
11.10 |
11.11 |
7.141 |
0.854 |
Triphenylamine |
5.7 |
19.64 |
19.60 |
19.62 |
13.382 |
1.127 |
tR1, tR2, tRm : retention times (1st calibration 2nd calibration, average)
k = (tR/t0) -1 : capacity factor t0 : "dead time", i.e. retention time of thiourea
Linear regression parameters : log Pow = a * log k + b
r2 = 0.996
a = 3.254
b = 1.945
Test substance:
tR1 = 2.93
tR2 = 2.929
tRm = 2.9295
k = 1.147
log k = 0.060
log Pow= 2.1
Description of key information
The data is relevant for classification in aquatic chronic toxicity hazard class, according to CLP criteria. The substance has LOW potential for bioaccumulation (log Kow<4).
Key value for chemical safety assessment
- Log Kow (Log Pow):
- 2.1
- at the temperature of:
- 25 °C
Additional information
A fully reliable experimental study, conducted according to a recognized OECD/EU method, is available. It is considered as a key study. The result is retained as key data.
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.
Reproduction or further distribution of this information may be subject to copyright protection. Use of the information without obtaining the permission from the owner(s) of the respective information might violate the rights of the owner.
