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: 248-256-4
CAS number: 27138-01-8
The 72h EC50 for average specific growth rate and yield could not be calculated due to the lack of fractional inhibition, and it is therefore estimated to be > 100 mg/L. The NOEC was estimated to be 100 mg/L.
This study was designed to determine
the effects of the reaction mass a, a, a', a'-tetramethyl-m-xylene-a,
a'-diol and a, a, a', a'-tetramethyl-p-xylene-a,
a'-diol (m/p DIOL) on the growth of Pseudokirchneriella
subcapitata, a unicellular freshwater green alga, over a 72 h
period. The study was performed to meet the requirements of OECD (2006)
Based on the results from the range
finding test, the definitive test was conducted with nominal
concentrations of 6.25, 12.5, 25, 50 and 100 mg/L m/p DIOL, together
with an untreated control. The corresponding mean measured (0 and 72 h)
concentrations of m/p DIOL were 5.87, 12.21, 23.77, 47.04 and 96.58
mg/L, respectively. Chemical analysis of test samples taken at 0 and 72
h indicated that concentrations of m/p DIOL were maintained over the 72
h test period, with concentrations in the range 95% to 101% of the
initial measured values.
The 72h EC50 for average specific
growth rate and yield could not be calculated due to the lack of
fractional inhibition, and it is therefore estimated to be > 100
mg/L. The NOEC was estimated to be 100 mg/L.
OECD Guideline 201 validity criteria
were met and therefore the test was considered to be acceptable
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.
På den här webbplatsen används kakor. Syftet är att optimera din upplevelse av den.
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