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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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: 230-949-8 | CAS number: 7381-01-3
- 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
Endpoint summary
Administrative data
Description of key information
Additional information
Based upon read-across to both Fatty acids, C12-18 and C18-unsatd., 2-sulfoethyl esters, sodium salts and Coco fatty acids 2 -sulfoethyl ester, sodium salt; Lauric acid 2 -sulfoethyl ester, sodium salt is readily biodegradable and has a low to moderate tendency to sorb to organic matter. In an OECD 106 sorption/desorption study, for two sludges an average Koc value of 1451 L/kg was observed for Lauric acid 2 -sulfoethyl ester, sodium salt, Biodegradation is thus considered to be the main removal mechanism of this substance.
Two simulation studies measuring the primary degradation [14C-radiolabelled] of the shortest (Lauryl, C12) and longer (Stearyl, C14 and C18) chained fatty acid isethionates have been conducted. The biodegradation of lauryl and stearyl isethionate in river water (OECD 314d) was shown to be extremely rapid with degradation half-life < 4 hours. DT50s in river water of C12 lauryl sodium isethionates was 0.21 h at 20 C and 0.36 h in water of sodium [14] stearyl isethionate (Brands, 2010). The partitioning and biodegradation of C12 and C18 fatty acid isethionates in activated sludge systems was estimated in an OECD 303A study (Gore, 2010). Extensive primary biodegradation of both short (Lauryl, C12) and the longest (Stearyl, C18) chained fatty acid isethionates was observed (99.8%), partitioning to sludge was minimal (0.16%) and the percentage parent material remaining in effluent was 0.05%. Degradation of the shortest chain-C12 lauryl sodium isethionates is even greater calculated at average % primary degradation of 99.88%, average % parent material in effluent of 0.02% and average % parent in sludge of 0.11%. Therefore the biodegradation offor lauric acid 2-sulfoethyl ester, sodium salt (sodium lauroyl isethionate) CAS No 7381-01-3 is demonstrated to be rapid and extensive.
The half-life in the different environmental compartments is expected to be short. No measured data is available which quantifies the half-life in soil or sediment. These values can therefore be estimated as a worst-case based on the readily biodegradability and the sorption data as determined in a sorption desorption test.
|
DT50 |
||
Degradation in river water: |
0.21hr |
||
Degradation in sediment |
30 day |
||
Degradation in soil |
30 day |
Lauric acid 2-sulfoethyl ester, sodium salt has a low vapour pressure and henry's law constant and because there are no important releases into the atmosphere degradation in air is thought to be of low relevance. Based on read-across, Coco fatty acids 2 -sulfoethyl ester, sodium salt no significant hydrolysis is predicted to occur according to the hydrowin module in EPIsuite. Based on read-across to Coco fatty acids 2 -sulfoethyl ester, sodium salt, degradation of lauric acid 2-sulfoethyl ester, sodium salt through hydrolysis is therefore not considered.
Direct photolysis of Lauric acid 2-sulfoethyl ester, sodium salt in air/water/soil will not occur, because it does not absorb UV radiation above 290 nm. Photo transformation in air/water/soil is therefore assumed to be negligible.
Lauric acid 2 -sulfoethyl ester, sodium salt is predicted to have a low tendency to partition to octanol and has a relatively high water solubility. The bioaccumulation potential of Lauric acid 2 -sulfoethyl ester, sodium salt was therefore assessed based on the ratio of the octanol and water solubility and resulted in log Kow values of 0.6 indicating a low bioaccumulation potential.
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.