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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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: 701-385-4 | CAS number: -
- 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
Endpoint summary
Administrative data
Description of key information
The uvcb substance is not readily biodegradable and is expected to disappear quickly in natural environment by adsorption to sediments and abiotic/biotic transformation processes with almost no significant mineralization.
Additional information
Data on ready biodegradability tests determined with QSAR and on a surface water degradation simulation study with radiolabeled test material are available.
Both test types show that the uvcb substance and its major constituents are not readily biodegradable but have a potential for primary degradation.
However, in the simulation study the mineralization was below 1% and in the modelled data were between 9%, 24 and 31% for the main isomer groups, respectively. Formation of degradation products was observed in the surface water test but could not be identified or quantified. The modelled data indicate > 100 degradation products. This difference can be explained with the different test conditions. Ready biodegradability tests according to 301C are performed at 22°C and with high amount of sludge inoculum which improves the biodegradation capacities.
The simulation tests in surface water is on the one hand closer to environmental conditions as the test system is natural water but temperature and concentration of suspended solids is low and represent worst case conditions for biodegradation. Furthermore, the constituents of the uvcb substance have high sorption capacities and decrease of overall radioactivity in the surface water test can be explained with sorption to test vessels.
Degradation pathways of constituents/different degradation products as well as adsorption processes are interfering during the test. Therefore, interpretation of the degradation pathways from the surface water test is very complex or even impossible if the parent substance is an uvcb substance.A lot of further peaks in the water phase which could be transformation products were observed but it was not possible to dissolve them chromatographically with highly sophisticated methods, or even to assign them to one of the isomer groups of the test item as possible parent substances. No analysis of the adsorbed part of the uvcb substance and degradation products was possible.
The same technical difficulties as in the surface water simulation test, to analyse and track the substances including transformation products, are expected in further degradation studies. The constituents of the uvcb substance are highly adsorptive and as for the study according to OECD 309 it was technically not feasible to achieve the recovery of the test item and the radioactivity completely due to adsorption to test equipment. In studies with additionally more substrate for adsorption like sediment simulation tests according to OECD 308 and soil simulation tests according to OECD 307 even more problems for recovery are expected. Despite the technical limitations with such adsorptive substances in further simulation degradation studies, the interpretation of the results concerning degradation pathways is not possible for uvcb substances like the substance tested. The available data show both the biodegradation potential based on the modelled data and biodegradation under worst case environmental conditions based on the experimental data on degradation in surface water. Any further simulation biodegradation test would not reveal any different findings.
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.