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EC number: 292-429-7
CAS number: 90622-29-0
The ready biodegradability of Alkenes, C11-12
hydroformylation products, distn. residues was determined by the Carbon
Dioxide Evolution Test Method (OECD Guideline 301B). Inoculated mineral
medium was dosed with a known amount of test substance as the nominal
sole source of organic carbon and aeraed with CO2 -free air. The CO2
produced from the mineralization of organic carbon within the test
chambers was displaced by the flow of CO2 -free air and trapped as K2CO3
in KOH trapping solution. The amount of CO2 produced by the test
substance (corrected for that evolved by the blank inoculum) was
expressed as a percentage of the theoretical amount of CO2 (TCO2) that
could have been produced if complete biodegradation of the test
substance occurred. The test contained a blank control group, a
reference group and a treatment group. Each group contained three
replicate test chambers. The blank control was used to measure the
background CO2 production of the inoculum and was not dosed with a
carbon source. The reference chambers were dosed with sodium benzoate, a
substance known to be biodegradable, at a nominal concentration of 10 mg
C/L. The treatment group test chambers were used to evaluate the test
substance at a nominal concentration of 10 mg C/L. The results indicated
that the activated sludge inoculum was active, degrading the reference
substance 90.8 %. The average cumulative percent biodegradation for Alkenes,
C11-12 hydroformylation products, distn. residues was 87.7 % after 28
days and not considered readily biodegradable, since the OECD critera for
ready biodegradability (60% of TCO2 within a 10 -day window of reaching 10%
TCO2) was not reached..
Alchisor CAL 145 (based on read-across from Alchisor CAL 123) was assessed for ready biodegradability in a reliable (Klimisch 1; Klimisch 2 when used for read-across), GLP compliant OECD Guideline 301B (Ready Biodegradability: CO2 Evolution Test). On the basis of this study Alchisor CAL 123 can be regarded as readily biodegradable
CAL 145 comprises alkenes C13-14 hydroformylation products with
read-across from the chemically-similar Alchisor CAL 123 as defined in
the `Read-Across Justification Document'. Where
environmental fate data exist for Alchisor CAL 123, these are
representative of the Alchisor CAL 145 substance.
123 was assessed for ready biodegradability in a reliable (Klimisch 1;
Klimisch 2 when used for read-across), GLP compliant OECD Guideline 301B
(Ready Biodegradability: CO2 Evolution Test). The test substance
biodegraded to an extent of 87.7% after 28 days with an unacclimated
sewage sludge inoculum. The test substance did not achieve 60%
degradation with a 10-day window for ready biodegradability; Alkenes. As
Alkenes, C11-12, hydroformylation products, distn. Residues are a
mixture, the 10-day window test is not applicable as the only
determination of ready biodegradability as different components of the
mixture can degrade preferentially (reference TG 103C). On the basis of
this study Alchisor CAL 123 can be regarded as readily biodegradable.
this UVCB is a mixture of esters, ethers, paraffins, aldehydes and
alcohols it is unlikely that any of these components would be degraded
into chemicals that might be of cause for concern.
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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