Registration Dossier
Registration Dossier
Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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.
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: 282-968-6 | CAS number: 84501-49-5
Short-term toxicity to aquatic invertebrates
Administrative data
Link to relevant study record(s)
Description of key information
48h EC50 (Daphnia magna) >= 5.5 mg/L (freshwater, nominal concentration)
48h LC50 (Artemia salina) >= 3.15 mg/L (marine water, nominal concentration)
Key value for chemical safety assessment
Fresh water invertebrates
Fresh water invertebrates
- Effect concentration:
- 5.5 mg/L
Marine water invertebrates
Marine water invertebrates
- Effect concentration:
- 3.15 mg/L
Additional information
Since no reliable short-term test involving aquatic invertebrates is available for C9-11AS Na (CAS 84501-49-5), in accordance to Regulation (EC) 1907/2006 Annex XI, 1.5, a read-across to other structurally related category members was conducted. Read-across data from C10AS Na (CAS 142-87-0) and C12AS Na (CAS 151-21-3) were used, since toxicity of alkyl sulfates is dependent on carbon chain length.
Two short-term studies with aquatic invertebrates are available for C12AS Na (CAS 151-21-3). In a key, non-GLP test Ceriodaphnia dubia was exposed to six test concentrations of C12AS Na (CAS 151-21-3) up to 101 mg/L (Lauth 1996). The test was performed under flow-through conditions, no special guideline was followed. Mortality of daphnids was evaluated daily; the EC50 value determined after 48 hours of exposure was 5.55 mg/L. Furthermore, a non-GLP study with CAS 151-21-3 using a common marine species (Artemia salina) is available. In this static test mortality of Artemia was determined in culture dishes using six concentrations of test substance up to 18 mg/L (nominal concentrations). The LC50 value after 48 hours of exposure ranged between 3.15 and 3.8 mg/L (nominal concentration).
Moreover, two 24-hour tests with Daphnia magna are available for C10AS Na (CAS 142-87-0). The first non-GLP study was performed following an AFNOR T.90301 (1974) method (Lundahl and Cabridenc 1978). The obtained results showed that the 24-hour EC50 value was 800 mg/L (nominal concentrations). Analytical measurements are not available. The other non-GLP study with Daphnia magna followed a method described by Norme Francaise Homologue, 1983, NF T90-31 (Sanchez Leal 1991). The 24-hour EC50 value was 470 mg/L. Analytical check of the test concentrations was not provided.
Due to structural and property similarities with the tested category member, it can be concluded that the above result applies also to C9-11AS Na (CAS 84501-49-5). The 48-hour EC50 value to the aquatic invertebrates is assumed to be 5.5 mg/L for freshwater invertebrates and 3.15 mg/L for marine invertebrates.
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.
