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EC number: 266-582-5
CAS number: 67124-09-8
Experimental results are available for
biodegradation in water (screening test) and soil adsorption. QSAR
predictions were applicable to determine the phototransformation in air,
aquatic bioaccumulation and the Henry´s Law Constant of the test
substance. Experimental investigations concerning hydrolysis and
biodegradation in water and sediment (simulation tests) as well as in
soil can be waived according to REACH Regulation.
Further information concerning environmental
fate and pathways of the test substance are not available and not
required for this registration under REACH.
Biodegradation in water was investigated
according to OECD Guideline 301F, with monitoring of the oxygen
consumption by an electrolytic respirometer system (Kung, 1998). Sludge
from a domestic waste water treatment plant was used as inoculum,
representing a diverse microbial population with high metabolism
activities. The test material attained 5.9 % degradation after 28 days
exposure and can therefore considered as "not readily biodegradable".
However, due to the low water solubility of the substance (4.8 mg/L,
Woolley and Mullee, 2003) and exposure considerations, no further
investigations concerning biodegradation have to be conducted in
accordance to REACH Regulation
Annex IX, Section 188.8.131.52., column 2 and Annex
IX, Section 184.108.40.206, column 2.
soil adsorption coefficient was determined in an experiment with High
Performance Liquid Chromatography (HPLC) according to EU Method C.19
(Fox and White, 2011). The logKoc value ranged from 3.28 to 4.01,
indicating a medium to high binding range to soil particles.
the Bond Method of the computer program HENRYWIN v3.20 (EPIWIN software
by US-EPA) a Henry´s Law Constant of 0.161 Pa*m³/mol was determined. The
Group Method showed a value of 0.216 Pa*m³/mol.
EPIWIN software AOPWIN v1.92 was used to predict the overall OH rate
constant (gas phase reaction constant) as 38.67E-12 cm³/molecules-sec.
The half-life in air is predicted as 3.30 hours when assuming a 12 h-day
with an OH rate constant of 1.5E6 OH/cm³.
aquatic Bioconcentration factor (BCF) was predicted with different QSAR
model tools: BCFBAF v3.01 (EPIWIN software), CAESAR v220.127.116.11 and VEGA
BCF model. In every case, the BCF was predicted higher than 100 L/kg. However,
based on weight of evidence, bioaccumulation is expected to be below the
criterion of concern.
investigations of hydrolysis were not conducted since this study can be
waived in accordance with REACH Regulation. Furthermore, a QSAR
prediction with HYDROWIN v2.00 is not possible for this type of
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.
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