Registration Dossier
Registration Dossier
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: 927-241-2 | CAS number: -
Endpoint summary
Administrative data
Description of key information
Biodegradation in water: screening tests
Normal paraffins in C9 to C14 Aliphatics (≤2% aromatics) are readily biodegradable, exhibiting 77 to 83% biodegradation in 28 days based on oxygen consumption and meeting the 10-day window.
Biodegradation in water and sediment: simulation tests
Biodegradation in water
Hydrocarbons, C11-C14, n-alkanes, isoalkanes, cyclics, <2% aromatics, biodegraded to an extent of 69% after 28 days in seawater that used the indigenous microorganisms in the seawater sample as a sole source of the inoculum. These data are used as read-across data for Hydrocarbons, C9 -C10, n-alkanes, isoalkanes, cyclics, <2% aromatics.
Hydrocarbons, C12-C14, isoalkanes, <2% aromatics biodegraded to an extent of 11% in sea water after 28 days.These data are used as read-across data for Hydrocarbons, C9 -C10, n-alkanes, isoalkanes, cyclics, <2% aromatics.
Biodegradation in sediment
C9-14 Aliphatics (≤ 2% aromatic) are readily biodegradable. Therefore, simulation tests in sediment are not required.
Biodegradation in soil
In accordance with column 2 of REACH Annex IX, the simulation testing on ultimate degradation in soil does not need to be conducted as the normal paraffinic substances representative of C9-C14 Aliphatics (less than 2% aromatic) are readily biodegradable. However, data is available from a Guideline (OECD 304 A) study conducted on Hydrocarbons, C11 -C14, n-alkanes, isoalkanes, cyclics, <2% aromatics and is presented below.
Hydrocarbons, C11-C14, n-alkanes, isoalkanes, cyclics, <2% aromatics, biodegraded to a great extent (>60%) in a silt loam soil at a rate comparable to the control, rapeseed oil (62 to 67%), within a two month test period as measured in respirometric oxygen consumption tests. The half-life, based on three tests was 45 days. This extent was replicated in two separate studies. These data are used as read-across data to Hydrocarbons, C9 -C10, n-alkanes, isoalkanes, cyclics, <2% aromatics.
Additional information
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.
