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: 293-917-2
CAS number: 91648-55-4
18h NOEC (Pseudomonas putida) = 550 mg/L (growth inhibition, read-across)
Since no reliable toxicity tests with microorganisms are available for
C16-20AS Na (CAS 91648-55-4), in accordance to Regulation (EC) No.
1907/2006 Annex XI, 1.5 a read-across to another structurally related
substance was conducted. Read-across data available for C16-18AS Na (CAS
68955-20-4) were used. Toxicity of alkyls sulfates is dependent on the
carbon chain length - homologues of chain length of C13 to C15 are
considered as the most toxic from the whole Alkyl Sulfate Category.
Toxicity of the chains from C16 and higher will decrease due to lower
bioavailability as a consequence of reduced water solubility.
One reliable study with Pseudomonas putida is available for C16-18AS Na
(CAS 68955-20-4). The key study (Steber 1988) followed the procedure of
cell multiplication inhibition test according to Bringmann and Kühn
(1977). The growth inhibition of Pseudomonas putida was recorded after
18 hours of exposure to the test substance. The 18-hour NOEC value was
determined to be 550 mg a.i./L (nominal concentration).
Due to structure and property similarities with the tested category
member it can be concluded that the above result applies also to
C16-20AS Na (CAS 91648-55-4). The 18-hour NOEC value for microorganisms
is 550 mg/L. This value was used for the PNEC STP derivation for C1620AS
Na (CAS 91648-55-4).
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.
Ce site web utilise des cookies afin de vous garantir la meilleure expérience possible sur nos sites web.
Welcome to the ECHA website. This site is not fully supported in Internet Explorer 7 (and earlier versions). Please upgrade your Internet Explorer to a newer version.
Do not show this message again