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EC number: 629-770-1 | CAS number: 57968-71-5
- 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:
- July 24-26, 2015
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
- Justification for type of information:
- 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
- Qualifier:
- according to guideline
- Guideline:
- EPA OPPTS 830.7570 (Partition Coefficient, n-octanol / H2O, Estimation by Liquid Chromatography)
- Deviations:
- no
- Principles of method if other than guideline:
- Not applicable
- GLP compliance:
- yes (incl. QA statement)
- Remarks:
- inspected on March 19, June 24-26 and July 22, 2013 / signed on September 24, 2013
- Type of method:
- HPLC method
- Partition coefficient type:
- octanol-water
- Analytical method:
- high-performance liquid chromatography
- Key result
- Type:
- log Pow
- Partition coefficient:
- 0.2
- Temp.:
- 25 °C
- pH:
- ca. 0 - ca. 14
- Details on results:
- Method: The partition coefficient of the test item was estimated using HPLC-method. The solutions of the test item were injected three times. Based on chromatographic data, the test item was considered to be stable during the test procedure.
Repeatability: No difference in log units between the three measurements of the test item solution was determined. Therefore, the study is considered to be valid.
Linearity: To calculate the linear regression eight chemicals for which log Pow has been reported were chosen from the list stated in the OECD 117 guideline. Six of them were used to calibrate the elution time in units of log Pow. The calculation was performed without phenol and benzoic acid because of ambiguous retention times for both references. The linear regression calculated fulfilled all quality criteria as given in the guideline.
The linearity of the analytical method was confirmed in the log Pow range from 0.5 to 2.7.
Calibration Curve: y = 0.5148 × x + 0.4696
Regression Coefficient (r): 0.9595
Result: The partition coefficient was determined based on a calibration curve using 6 reference items.
The logarithmic partition coefficient (n-octanol/water) of the test item was determined to be 0.2 using the HPLC method. - Conclusions:
- The partition coefficient of DIETHYL TARTRATE was determined to be : log Kow = 0,2 using HPLC method
- Executive summary:
The partition coefficient of DIETHYL TARTRATE was measured under GLP according to the OECD guideline 117, HPLC method.
The partition coefficient was determined based on a calibration curve using 6 reference items.
The logarithmic partition coefficient (n-octanol/water) of the test item was determined to be 0.2 (extrapolated value).
The data are relevant for classification in aquatic chronic toxicity hazard class, according to CLP criteria. DIETHYL TARTRATE has low potential for bioaccumulation (log Kow<4).
- Endpoint:
- partition coefficient
- Type of information:
- read-across from supporting substance (structural analogue or surrogate)
- Adequacy of study:
- key study
- Justification for type of information:
- 1. HYPOTHESIS FOR THE ANALOGUE APPROACH
The hypothesis is based on structural similarity (L-form for the test substance instead of racemate product for the target)
2. SOURCE AND TARGET CHEMICAL(S) (INCLUDING INFORMATION ON PURITY AND IMPURITIES)
Refer to the Test material section of the source and target records.
3. ANALOGUE APPROACH JUSTIFICATION
Both substances are not expected to have significantly different LogKow, and the read-across is considered suitable.
4. DATA MATRIX
Source: L-Diethyl tartrate
Target: Racemate of Diethyl tartrate
Further information is included in IUCLID Section 13. - Reason / purpose for cross-reference:
- read-across source
- Key result
- Type:
- log Pow
- Partition coefficient:
- 0.2
- Temp.:
- 25 °C
- pH:
- >= 0 - <= 14
- Conclusions:
- The logarithmic partition coefficient (n-octanol/water) of the test item was determined to be 0.2 at 25°C (from analogue).
- Executive summary:
An analogue of Racemate of Diethyl tartrate, L-Diethyl tartrate, was tested to detemine its partition coefficient according to the OECD guideline 117, using HPLC method, and under GLP.
The partition coefficient was determined based on a calibration curve using 6 reference items.
The logarithmic partition coefficient (n-octanol/water) of the test item was determined to be 0.2 at 25°C (extrapolated value).
The data are relevant for classification in aquatic chronic toxicity hazard class, according to CLP criteria. DIETHYL TARTRATE has low potential for bioaccumulation (log Kow<4).
Referenceopen allclose all
Table 1: Capacity Factor k' and log Pow of the Reference Items
item | Replicate of analysis | Retention time1(min) | Capacity Factor2 | log k'2 | log Pow3 |
sodium nitrate | 3 | 1,298 | n.a. | n.a. | n.a. |
Reference item | |||||
4-acetylpyridine | 3 | 11,502 | 7,9 | 0,895 | 0,5 |
aniline | 3 | 9,787 | 6,5 | 0,816 | 0,9 |
acetanilide | 3 | 12,115 | 8,3 | 0,921 | 1 |
benzonitrile | 3 | 20,693 | 14,9 | 1,174 | 1,6 |
methyl benzoate | 3 | 64,009 | 48,3 | 1,684 | 2,1 |
toluene | 3 | 94,818 | 72 | 1,858 | 2,7 |
1mean value of three measurments
2values represent rounded results calculated from the exact raw data
3log Pow values given in OECD Guideline No.117
Table 2 : Capacity Factor k'and log Pow of Test Item
Test Item |
Retention Time (min) |
Capacity Factor* |
log k'* |
log Pow2 |
TARTRATE DIETHYLE |
6.000 |
3.62 |
0.56 |
0.2 |
6.000 |
3.62 |
0.56 |
0.2 |
|
5.973 |
3.60 |
0.56 |
0.2 |
|
Mean1 |
5.991 |
3.61 |
0.56 |
0.2 |
* values represent rounded results calculated from the exact raw data
1 mean value of three measurements
2 calculated from regression data (extrapolation)
Description of key information
The logarithmic partition coefficient (n-octanol/water) of the test item was determined to be 0.2 at 25°C (from analogue).
The substance has low potential to bioaccumulate in the environment, according to CLP classification criteria for aquatic chronic toxicity (log Kow <4).
Key value for chemical safety assessment
- Log Kow (Log Pow):
- 0.2
- at the temperature of:
- 25 °C
Additional information
An analogue of Racemate of Diethyl tartrate, L-Diethyl tartrate, was tested to detemine its partition coefficient according to the OECD guideline 117, using HPLC method, and under GLP. It is considered as a key study. Read-across is considered justified based on chemical similarity. 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.
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