Registration Dossier
Registration Dossier
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EC number: 200-666-4 | CAS number: 67-72-1
Partition coefficient
Administrative data
- Endpoint:
- partition coefficient
- Type of information:
- experimental study
- Adequacy of study:
- weight of evidence
- Study period:
- Experimental starting date: 25/03/2021.
Experimental completion date: 09/04/2021. - Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- guideline study with acceptable restrictions
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 2 021
Materials and methods
Test guidelineopen allclose all
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 117 (Partition Coefficient (n-octanol / water), HPLC Method)
- Qualifier:
- according to guideline
- Guideline:
- EPA OPPTS 830.7570 (Partition Coefficient, n-octanol / H2O, Estimation by Liquid Chromatography)
- GLP compliance:
- no
- Other quality assurance:
- other: The study was carried out according to the following guidelines:
- Remarks:
- - Good laboratory practices standard operating procedures approved by Laboratorios Munuera S.L.U. - COMMISSION REGULATION (EU) No 283/2013 of 1 March 2013
- Type of method:
- HPLC method
- Partition coefficient type:
- octanol-water
Test material
- Reference substance name:
- Tetrachloroethylene
- EC Number:
- 204-825-9
- EC Name:
- Tetrachloroethylene
- Cas Number:
- 127-18-4
- IUPAC Name:
- tetrachloroethene
- Reference substance name:
- Hexachloroethane
- EC Number:
- 200-666-4
- EC Name:
- Hexachloroethane
- Cas Number:
- 67-72-1
- Molecular formula:
- C2Cl6
- IUPAC Name:
- hexachloroethane
- Details on test material:
- Active: Hexachloroethane > 98.5% w/w (HPLC method)
Impurity: tetrachloroethylene <1,5% w/w (HPLC method)
impurity 1
Constituent 1
Study design
- Analytical method:
- high-performance liquid chromatography
Results and discussion
Partition coefficientopen allclose all
- Key result
- Type:
- log Pow
- Partition coefficient:
- 4.39
- Temp.:
- 25 °C
- pH:
- 5
- Remarks on result:
- other: n=3;
- Remarks:
- 4.39 ± 0.03
- Key result
- Type:
- log Pow
- Partition coefficient:
- 4.37
- Temp.:
- 25 °C
- pH:
- 7
- Remarks on result:
- other: n = 3
- Remarks:
- 4.37 ± 0.04
Any other information on results incl. tables
Partition coefficient at pH 5.0.
| Determination | log Pow | Repeatability* | Reproducibility** |
| 1 | 4.404 | 0.002 | 0.056 |
| 2 | 4.402 | ||
| 3 | 4.349 | 0.054 | |
| Overall Mean ±SD | 4.39 ± 0.03 |
* Repeatability is the variation between Determination 1 and 2.
** Reproducibility is the variation between Determination 1 and 3 and determination 2 and 3.
Partition coefficient at pH 7.0
| Determination | log Pow | Repeatability* | Reproducibility** |
| 1 | 4.388 | 0.004 | 0.062 |
| 2 | 4.384 | ||
| 3 | 4.325 | 0.059 | |
| Overall Mean ±SD | 4.37 ± 0.04 |
* Repeatability is the variation between Determination 1 and 2.
** Reproducibility is the variation between Determination 1 and 3 and determination 2 and 3.
Applicant's summary and conclusion
- Conclusions:
- Partition coefficient (noctanol/water) HPLC method (pH 5.0 and 25ºC) n = 3 OECD 117 4.39 ± 0.03
Partition coefficient (noctanol/water) HPLC method (pH 7.0 and 25ºC) n = 3 OECD 117 4.37 ± 0.04 - Executive summary:
The partition coefficient (n-octanol/water) by High Performance Liquid Chromatography (HPLC) method, has been determined at pH 5.0 and pH 7.0 for a batch of the test item Hexachloroethane TECH.
Parameter; Method ;Sample
Partition coefficient (noctanol/water)-HPLC method (pH 5.0 and 25ºC) n = 3; ;OECD 117 4.39 ± 0.03
Partition coefficient (noctanol/water) HPLC method (pH 7.0 and 25ºC) n = 3 ;OECD 117 ;4.37 ± 0.04
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