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: 236-813-4 | CAS number: 13494-80-9
- 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

Bioaccumulation: terrestrial
Administrative data
- Endpoint:
- bioaccumulation: terrestrial
- Type of information:
- experimental study
- Adequacy of study:
- weight of evidence
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- study well documented, meets generally accepted scientific principles, acceptable for assessment
Data source
Reference
- Reference Type:
- publication
- Title:
- Contamination of terrestrial gastropods, Helix aspersa maxima, with 137Cs, 85Sr, 133Ba and 123mTe by direct, trophic and combined pathways
- Author:
- Madoz-Escande C, Simon O
- Year:
- 2 006
- Bibliographic source:
- Journal of Environmental Radioactivity 89, 30-47
Materials and methods
Test guideline
- Qualifier:
- no guideline followed
- Principles of method if other than guideline:
- No standard guideline is applicable for this type of research work
- GLP compliance:
- no
- Remarks:
- no guideline study, but it is expected that GLP-principles were respected
Test material
- Reference substance name:
- Tellurium
- EC Number:
- 236-813-4
- EC Name:
- Tellurium
- Cas Number:
- 13494-80-9
- Molecular formula:
- Te
- IUPAC Name:
- hydrogen telluride
- Details on test material:
- Radio-labeled Te
Constituent 1
Results and discussion
Bioconcentration factor
- Key result
- Remarks on result:
- other: no fixed BCF-value can be determined for Te; data are used in a weight of evidence approach
Applicant's summary and conclusion
- Conclusions:
- Gastropods were contaminated by radioactive aerosols which were assumed to be representative of those that would be released during a nuclear accident occurring in a PWR, includsing Tellurium. The radionuclides were mixed and associated with stable elements. Three contamination pathwayswere studied: the direct pathway (direct deposition of radioactive aerosols), the trophic pathway (ingestion of flour contaminated by the same aerosols) and a combined exposure (deposition of aerosols followed by ingestion of contaminated flour). The contamination period was followed by a depuration period (ingestion of uncontaminated flour).
During the observation period, there was no significant difference in the growth or in the mortality of the samples betweenthe 3 groups of contaminated snails and the reference group. Following a contamination by the radionuclides, the distribution through the total body of snails depends on the radionuclides and on the exposure pathway. The target tissues for tellurium was: the shell for a direct exposure and the soft tissues for a trophic pathway (digestive system).
The bioaccumulation factors calculated after 21 days of contaminated food ingestion that are found in the shell and musche was 0.003.
At the end of the depuration period (21 days), the cumulated faeces reduced tellurium by about 30% (combined pathway) to 80% (trophic pathway). However, the retention coefficient (calculated as being the relationship between specific activity in an organ on a date of depuration and that corresponding to the end of the period of exposure) remains high, even after 21 days of depuration. - Executive summary:
137Cs, 85Sr, 133Ba and 123mTe contaminations of terrestrial gastropods, Helix aspersa maxima, by direct deposition, labelled food ingestion or combined (trophic and direct pathways) exposure were carried out under laboratory conditions. The aim of this study was to compare the three contamination pathways: direct, trophic and combined, in terms of individual mortality, radionuclide uptake, depuration and distribution in the tissues.
An initial group of 30 snails (2 years old) was exposed to radioactive aerosols during a 20h period. These aerosols were assumed to be representative of those that would be released during a nuclear accident occurring in a PWR. A second group of 50 snails (same age) was submitted to an ingestion of commercial food contaminated by the same aerosols, twice a week for 21 days (flour at a feeding rate of about 0.2 g). A third group of 40 snails was submitted to a combined exposure: exposure to radioactive aerosols (20 h), followed by ingestion of flour contaminated by the same aerosols, twice a week for 21 days. No significant difference between the three groups and a reference group of 10 snails was observed, neither in growth nor in mortality. Concerning the direct pathway, at the end of direct deposition (about 1 day after the beginning), cesium was the most bioavailable element, distributed rather homogeneously throughout the whole body (13% of the total Cs in all organs excepting the digestive system and 28% in the muscle). Tellurium was mainly present in the shell (70%) and in the digestive system (20%). After 21 days of depuration, the faeces eliminated 42% of the Te. As for contamination by ingestion, Te mainly accumulated in the digestive system (72% of Te present in the total body). Concerning contamination by combined pathways, at the end of the 21-day exposure, the 4 radionuclides had the same tendency as direct deposition. However, the effect of the trophic pathway was significant: it causes an 18% increase of Sr in the shell and an 7% in- crease of Cs in the digestive system in comparison to direct deposition, resulting in a final 86% in the shell and 27% in the digestive system.
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.
