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: 949-790-7
CAS number: -
For full results see appendix 1 attached
to background information
The objective of the study was to evaluate
test item Esacure 3644 for its ready biodegradability in an aerobic
aqueous medium with microbial activity introduced by inoculation with
Procedures described in this report were
in compliance with OECD guideline No. 301 B, 1992. In addition,
procedures were designed to meet test methods of ISO standard 10634,
Esacure 3644 was a light yellow solid
(UVCB) and was not sufficiently soluble to allow preparation of an
aqueous solution at a concentration of 1 g/L. Total Organic Carbon (TOC)
content of the test item was determined to be 71.54%. Based on TOC
content ThCO2 of the test item was calculated to be 2.62 mg CO2/mg. The
test item was tested in duplicate at a target concentration of 17 mg/L,
corresponding to 12 mg TOC/L.
The study consisted of six bottles:
2 inoculum blanks (no test item),
2 test bottles (Esacure 3644),
1 procedure control (sodium acetate) and
1 toxicity control (Esacure 3644 plus
Since Esacure 3644 was not sufficiently
soluble to allow preparation of an aqueous solution at a concentration
of 1 g/L, weighed amounts were added to 2 litre test bottles containing
medium with microbial organisms and mineral components. To this end, 10
mL of Milli- RO water was added to each weighing bottle containing test
item. After vigorous mixing (vortex) the resulting suspension was added
quantitatively to the test medium. Test solutions were continuously
stirred during the test to ensure optimal contact between test item and
test organisms. Furthermore, test medium was swirled around daily, since
the test item tended to float on the water surface. Test duration was 28
days for inoculum blank and test item (last CO2 measurement on day 29)
and 14 days for procedure and toxicity control (last CO2 measurement on
Relative biodegradation values calculated
from measurements performed during the test period revealed no
biologically relevant biodegradation of Esacure 3644 (2% and 0%, based
In the toxicity control, Esacure 3644 was
found not to inhibit microbial activity.
Since all criteria for acceptability of
the test were met, this study was considered to be valid.
In conclusion, Esacure 3644 was designated
as not readily biodegradable.
Study conducted to recognised testing
guidelines with GLP certification
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.
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