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EC number: 249-958-3 | CAS number: 29923-31-7
- 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
Additional information
The aquatic hazard assessment of Sodium hydrogen N-(1-oxododecyl)-L-glutamate (CAS No. 29923 -31 -7) was performed using test results with available data for the source substances l-Glutamic acid, N-coco acyl derivs., monosodium salts (CAS No. 68187-32-6) and L-Glutamic acid, N-coco acyl derivs., disodium salts (CAS No. 68187-30-4), which was used in a read across approach in accordance with Regulation (EC) No 1907/2006, Annex XI, 1.5. The read across is considered valid as the target substance is the major component, and the central member of an homologous series of components, of the source substances, possessing identical functional groups and extremely similar structures. It is reasonable to expect that the toxicological properties of the target and source substances will not be markedly different. On this basis, experimental data on the source substances are expected to be directly applicable to the target substance, and can be used to adequately predict its properties. Further details are provided in the in the field “Attached documents”.
Two studies investigating the short-term toxicity on fish and on aquatic invertebrates of Sodium hydrogen N-(1-oxododecyl)-L-glutamate (CAS No. 29923 -31 -7) are available. These studies have been conducted according to international guidelines however they have not been considered as key studies but only as supporting studies as the study on fish reported some issue on the concentration of the substance monitored during the study that has not been considered adequately investigated while the study on the aquatic invertebrated has been carried out at a concentration of the substance of ca 36.6% that is much lower of the concentration of the substance uesd in the read-across study.
Thus data for the source substance l-Glutamic acid, N-coco acyl derivs., monosodium salts (CAS No. 68187-32 -6) and L-Glutamic acid, N-coco acyl derivs., disodium salts (CAS No. 68187-30-4 were used for the assessment. The key studies showed a 96h-LC50 of 62.4 mg/L for fish, a 48h-EC50 of 49 mg/L for aquatic invertebrates and a 72h-EC50 of 32.56 mg/L for algae. Giving these results Sodium hydrogen N-(1-oxododecyl)-L-glutamate is considered to be harmful to aquatic organisms. Algae are identified as most sensitive organisms
Regarding chronic data, one 72h-EC10 value for freshwater algae is available and determined to be 11.25 mg/L. Results of long-term toxicity test with fish and Daphnia are not available. In Annex IX, column II (9.1) of Regulation (EC) No 1907/2006, it is laid down that a long-term toxicity test shall be proposed by the registrant if the chemical safety assessment indicates the need to investigate further the effects on aquatic organisms. The hazard assessment of Sodium hydrogen N-(1-oxododecyl)-L-glutamate
reveals that aquatic invertebrates are more sensitive than fish. However, the 48h-EC50 is measured to be > 10 mg/L indicating that the substance is not acute toxic but harmful to aquatic invertebrates. Given the very fast biodegradation of the substance in the environment (> 80% in 7 days) and the very low bioaccumulation potential (log Kow = -1.77) chronic toxicity of the substance leading to chronic classification is not indicated. An exposure assessment performed using PNECs derived on the basis of the available aquatic short-term toxicity tests (including a conservative assessment factor of 1000) indicate no risk for the aquatic environment. Therefore, it is not considered to be necessary to perform a long-term toxicity test with aquatic invertebrates to improve the safe handling of the substance.One study investigating the toxicity of Sodium hydrogen N-(1-oxododecyl)-L-glutamate (CAS No. 29923 -31 -7)
to aquatic microorganisms is available. A 3h-EC10 is determined to be > 1000 mg/L. As the substance is readily biodegradable no toxicity was expected for microorganisms. The test result confirmed this assumption. Thus, inhibition of the biodegradation activity of activated sludge in STPs is not anticipated.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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