Registration Dossier
Registration Dossier
Data platform availability banner - registered substances factsheets
Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.
The new ECHA CHEM database has been released by ECHA, and it now contains all REACH registration data. There are more details on the transition of ECHA's published data to ECHA CHEM here.
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: 231-193-1 | CAS number: 7446-07-3
- 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
Adsorption / desorption
Administrative data
Link to relevant study record(s)
- Endpoint:
- adsorption / desorption: screening
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- comparable to guideline study
- Qualifier:
- equivalent or similar to guideline
- Guideline:
- OECD Guideline 106 (Adsorption - Desorption Using a Batch Equilibrium Method)
- Principles of method if other than guideline:
- A detailed description of method is given under "Any other information on materials and methods".
- GLP compliance:
- no
- Remarks:
- Study was not conducted for REACH propose. But information and documentation is sufficient. A replication under GLP is not reasonable.
- Media:
- soil
- Radiolabelling:
- no
- Analytical monitoring:
- yes
- Details on matrix:
- A total of 4813 soils were sent to CSIRO by Eurometaux for this study. From these, a subset of samples were repeated or replicated by re-scanning.
A total of 492 soils were selected for IR analysis to be used in the development of calibration and validation models.
The FTIR spectral variability in the analysis of soils can be found in supplemental information. Soils were oven dried at 40oC for 12 h and cooled in a desiccator prior to MIR analysis or experimental log-Kd value determinations.
The soil pH in 0.01 M calcium chloride (CaCl2) was provided to CSIRO by Eurometaux (EU). - Type:
- Kd
- Value:
- > 0.32 - <= 4 650 L/kg
- Remarks on result:
- other: For further details refer to executive summary
- Validity criteria fulfilled:
- yes
- Executive summary:
-
The aim of this project was to use mid-infrared (MIR) spectroscopic analysis of soils with experimental derived Kdvalues to develop calibration models to predict the solid- solution partitioning (log-Kd) values for tellurium(VI) (T e(VI)) in soils of the EuroGeoSurveys geochemical mapping of agricultural and grazing land soil of Europe (GEMAS).
-
Experimental log-Kdvalues and a multivariate partial least squares (PLS) model was developed using 492 selected soils from the 4813 soils of the GEMAS sampling program. A composite PLS model was developed using a combination of both spectral and soil pH data and was found to predict with good accuracy the experimental log-Kdvalues for Te(VI) in calibration soils (n = 292, R2= 0.79).
-
Validation of the model was carried out with the 492 soil samples being split into two subsets; the first 292 for calibration and the remaining 200 for validation. The composite PLS model (spectra plus soil pH) developed from the 292 calibration samples was found to predict with good accuracy the log-Kdvalues for Te(VI) in the validation soils (n = 200, R2= 0.78).
-
The validated composite PLS model (spectra plus soil pH) was applied to the prediction of log-Kdvalues for Te(VI) in the remaining 4321 soils of the GEMAS sampling program.
The experimantal results for the kd values are between 0.32 and 4650. Based on the statistical calulation a log kd value of 2 - 3 seems to be realistic. For the enivronmental modelling by EUSES the log kd will be stated with 2.
-
- Endpoint:
- adsorption / desorption: screening
- Type of information:
- read-across from supporting substance (structural analogue or surrogate)
- Adequacy of study:
- key study
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- comparable to guideline study
- Justification for type of information:
- see section 13.1 for read-across justification
- Reason / purpose for cross-reference:
- read-across source
- Qualifier:
- equivalent or similar to guideline
- Guideline:
- OECD Guideline 106 (Adsorption - Desorption Using a Batch Equilibrium Method)
- Principles of method if other than guideline:
- A detailed description of method is given under "Any other information on materials and methods".
- GLP compliance:
- no
- Remarks:
- Study was not conducted for REACH propose. But information and documentation is sufficient. A replication under GLP is not reasonable.
- Media:
- soil
- Radiolabelling:
- no
- Analytical monitoring:
- yes
- Details on matrix:
- A total of 4813 soils were sent to CSIRO by Eurometaux for this study. From these, a subset of samples were repeated or replicated by re-scanning.
A total of 492 soils were selected for IR analysis to be used in the development of calibration and validation models.
The FTIR spectral variability in the analysis of soils can be found in supplemental information. Soils were oven dried at 40oC for 12 h and cooled in a desiccator prior to MIR analysis or experimental log-Kd value determinations.
The soil pH in 0.01 M calcium chloride (CaCl2) was provided to CSIRO by Eurometaux (EU). - Type:
- Kd
- Value:
- > 0.32 - <= 4 650 L/kg
- Remarks on result:
- other: For further details refer to executive summary
- Validity criteria fulfilled:
- yes
- Executive summary:
-
The aim of this project was to use mid-infrared (MIR) spectroscopic analysis of soils with experimental derived Kdvalues to develop calibration models to predict the solid- solution partitioning (log-Kd) values for tellurium(VI) (T e(VI)) in soils of the EuroGeoSurveys geochemical mapping of agricultural and grazing land soil of Europe (GEMAS).
-
Experimental log-Kdvalues and a multivariate partial least squares (PLS) model was developed using 492 selected soils from the 4813 soils of the GEMAS sampling program. A composite PLS model was developed using a combination of both spectral and soil pH data and was found to predict with good accuracy the experimental log-Kdvalues for Te(VI) in calibration soils (n = 292, R2= 0.79).
-
Validation of the model was carried out with the 492 soil samples being split into two subsets; the first 292 for calibration and the remaining 200 for validation. The composite PLS model (spectra plus soil pH) developed from the 292 calibration samples was found to predict with good accuracy the log-Kdvalues for Te(VI) in the validation soils (n = 200, R2= 0.78).
-
The validated composite PLS model (spectra plus soil pH) was applied to the prediction of log-Kdvalues for Te(VI) in the remaining 4321 soils of the GEMAS sampling program.
The experimantal results for the kd values are between 0.32 and 4650. Based on the statistical calulation a log kd value of 2 - 3 seems to be realistic. For the enivronmental modelling by EUSES the log kd will be stated with 2.
-
Referenceopen allclose all
Results for the modelling of log-Kd for Te(VI) are shown for PLS modelling using only the DRIFT spectra, univariate regression from pH, and the composite PLS model (DRIFT plus soil pH). Statistics are described by coefficient of determination (R2), root mean square of error for cross validation (RMSECV), standard deviation (SD) and ratio of prediction to deviation (RPD). Statistics are also shown for prediction of the 200 sample validation soil set and the full set of unknown samples from the composite PLS model†.
|
Log(Kd+1) PLS (DRIFT model) |
Log(Kd+1) univariate model) |
Log(Kd+1) PLS (DRIFT+pH model) |
Log(Kd+1) (DRIFT+pH validation of the 200 sample Test set |
Log(Kd+1) predictions |
||
Min |
0.121 |
0.121 |
0.121 |
0.121 |
-0.583 |
|
|
Max |
3.388 |
3.388 |
3.388 |
3.388 |
4.060 |
|
|
R2 |
0.719 |
0.649 |
0.788 |
0.776 |
|
|
|
RMSECV |
0.515 |
0.573 |
0.446 |
0.447 |
|
|
|
SD |
0.968 |
0.968 |
0.968 |
0.945 |
0.910 |
|
|
RPD |
1.879 |
1.690 |
2.170 |
2.114 |
|
|
†Min, Max, SD, and RMSECV are in L/kg units.
Results for the modelling of log-Kd for Te(VI) are shown for PLS modelling using only the DRIFT spectra, univariate regression from pH, and the composite PLS model (DRIFT plus soil pH). Statistics are described by coefficient of determination (R2), root mean square of error for cross validation (RMSECV), standard deviation (SD) and ratio of prediction to deviation (RPD). Statistics are also shown for prediction of the 200 sample validation soil set and the full set of unknown samples from the composite PLS model†.
|
Log(Kd+1) PLS (DRIFT model) |
Log(Kd+1) univariate model) |
Log(Kd+1) PLS (DRIFT+pH model) |
Log(Kd+1) (DRIFT+pH validation of the 200 sample Test set |
Log(Kd+1) predictions |
||
Min |
0.121 |
0.121 |
0.121 |
0.121 |
-0.583 |
|
|
Max |
3.388 |
3.388 |
3.388 |
3.388 |
4.060 |
|
|
R2 |
0.719 |
0.649 |
0.788 |
0.776 |
|
|
|
RMSECV |
0.515 |
0.573 |
0.446 |
0.447 |
|
|
|
SD |
0.968 |
0.968 |
0.968 |
0.945 |
0.910 |
|
|
RPD |
1.879 |
1.690 |
2.170 |
2.114 |
|
|
†Min, Max, SD, and RMSECV are in L/kg units.
Description of key information
Key value for chemical safety assessment
Other adsorption coefficients
- Type:
- log Kp (solids-water in sediment)
- Value in L/kg:
- 100
- at the temperature of:
- 21 °C
Other adsorption coefficients
- Type:
- log Kp (solids-water in soil)
- Value in L/kg:
- 100
- at the temperature of:
- 21 °C
Additional information
The experimantal results for the kd values are between 0.32 and 4650. Based on statistical calulation a log kd value of 2 - 3 seems to be realistic. For the enivronmental modelling by EUSES the log kd will be stated with 2.
Based on data from selenium, which is considered to be the most comparable element, in a first approach for the partition coefficients solids-water in sediment and solids-water in soil the same order of magnitude is assumed.
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.