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
Table 1: Mortality of adult specimens in %:
Incubation time (in days)
Concentration [mg /L]
14d NOEC (Danio rerio) = 1.65 mg/L (UBA guideline equivalent to OECD
Since no reliable long-term toxicity tests with fish 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 considering animal welfare. Toxicity of alkyls
sulfates is dependent on the carbon chain length. Homologues of C-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
One non-GLP 14-day study with fish is available for C16-18AS Na (CAS
68955-20-4, BASF 2001). The test was performed according to a German UBA
method for a prolonged toxicity test with zebra fish, equivalent to OECD
204 guideline. Zebrafish (Danio rerio) were exposed for 14 days under
semi-static conditions to five test concentrations up to 30 mg/L of the
test substance of 55% purity, corresponding to 16.5 mg a.i./L. No
analytical measurements are available. The 14-day NOEC value was
determined to be 1.65 mg a.i./L (nominal concentration). As the results
show, mortality of fish occurred at the concentrations of 10 mg/L of
product and higher (equal to 5.5 mg a.i./L). Fish mortality reaching 80%
and more was seen already on day 2. On the other hand, no toxic effects
are recorded at the concentration of 3 mg product/L (equal to 1.65 mg
a.i./L) thoughout the whole testing period. Therefore, the reliable long
term NOEC value for fish can be considered as 1.65 mg a.i./L.
Due to structure and property similarities with the tested category
member it can be concluded that the above results apply also to C16-20AS
Na (CAS 91648-55-4). The worst case NOEC value for fish is 1.65 mg/L.
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