Registration Dossier
Registration Dossier
Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.
The new ECHA CHEM database has been released by ECHA, and it now contains all REACH registration data. There are more details on the transition of ECHA's published data to ECHA CHEM here.
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: 932-020-9 | CAS number: 246538-71-6
Ecotoxicological Summary
Administrative data
Hazard for aquatic organisms
Hazard for air
Hazard for terrestrial organisms
Hazard for predators
Additional information
The ecotoxicity of hydrocarbons, C8-C9, isoalkanes has been examined in a series of studies on fish, Daphnia and algae, and additional QSAR modelling has been performed. The most conservative results of aquatic studies showed this substance to be of moderate toxicity, with LL50 or EL50 values of 18.4 mg/L (fish), 2.4 mg/L (Daphnia), and 10 mg/L (algae). All studies were conducted using Water Accomodated Fractions (WAFs) studies because of the limited water solubility. QSAR modelling data on microorganisms resulted in an EL50 of 28.48 mg/L. A study on the chronic toxicity to Daphnia resulted in a NOELR of 1 mg/L. Further QSAR modelling was performed to address chronic toxicity of hydrocarbons, C8-C9, isoalkanes to fish and a NOELR was found to be 0.46 mg/L. Standard tests for terrestrial endpoints are intended for single substances and are not appropriate for the risk assessment of this complex substance. For the purpose of risk assessment, soil PNECs for hydrocarbon blocks have been derived using aquatic PNECs and the equilibrium partitioning method (EqP) using representative structures. Studies on long-term or reproductive toxicity to birds do not need to be conducted due to the existence of a large mammalian dataset demonstrating low toxicity to higher organisms.
Conclusion on classification
The substance is inherently biodegradable. The most sensitive acute aquatic value is an EL50 of 2.4 mg/L (Daphnia). Measured data on BCF and the log Kow are not available. An evaluation of representative hydrocarbon structures using the PETRORISK model indicates no structures meet the Bioaccumulative (B) or very Bioaccumulative (vB) criteria. Chronic toxicity values are 1 mg/L (experimental result) or 0.46 mg/L (estimated with PETRORISK model). Log Kow values are available for compounds (see Product Library in PETRORISK spreadsheet attached in IUCLID section 13).The substance is classified aquatic chronic category 2 according to CLP/GHS and classified R 51/53 according to DSD/DPD.
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.
