Registration Dossier
Registration Dossier
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EC number: 230-949-8 | CAS number: 7381-01-3
Endpoint summary
Administrative data
Description of key information
Additional information
The adsorption-desorption of Sodium lauroyl Isethionate which is the main component of Coco fatty acids 2-sulfoethyl ester, sodium salt
was determined for two STP sludges according to OPPTS guideline 835.1110. Under the test conditions, lauric acid 2-sulfoethyl ester, sodium salt demonstrated a low to moderate tendency to adsorb to sludge. Koc values determined according to OPPTS 835.1110 of 1412 and 1490 L/kg were observed for two STP sludges. The average value of 1451 L/kg is used for risk assessment purposes. Based on this Koc a Kd soil and sediment is calculated by EUSES of 29 and 72.5 L/kg respectively. The soil and (suspended) sediment-water partition coefficient is calculated to be 43.7 and 37.2 m3/m3.
Based on the available studies on biodegradation and read across to Coco fatty acids 2-sulfoethyl ester, sodium salt,
sodium lauroyl Isethionate is readily biodegradable, has a very low vapour pressure and the calculated Henry’s Law constant value indicates a low volatility. Level I calculations using a water solubility of 102 mg/L, a vapour pressure of 0.0015 and a log Kow of 4.116 to predict the partitioning to soil and sediment resulted in a distribution of 90% to soil, 7.8% to water and 2% to sediment. Therefore, it can be anticipated that ifSodium lauroyl Isethionate is
released to the environment, the fraction in the aqueous phase is immediately degraded and the minimal fraction which is not degraded will most likely partition to the soil and sediment.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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