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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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: 265-232-9 | CAS number: 64771-71-7 A combination of normal paraffins having carbon numbers predominantly greater than C10 obtained by urea adduction or molecular sieve processes.
Endpoint summary
Administrative data
Key value for chemical safety assessment
Effects on fertility
Additional information
Paraffins (petroleum), normal C>10 is not expected to be developmental and reproductive toxicant based on the results (NOAEL higher than 1000 mg/kg/day and a lack of systemic toxicity) obtained through the studies on Decane and Undecane (substances in the category "Hydrocarbons, C9 -C14, aliphatics, <2% aromatics".
See also testing proposal.
Short description of key information:
Two studies for the reproduction toxicity are available on decane and undecane showing respectively a NOAEL >1000 mg/kg/day for the reproductive performance and a NOAEL>1000 mg/kg/day for both developmental toxicity and reproductive toxicity.
See also testing proposal.
Effects on developmental toxicity
Description of key information
Two developmental studies are available on C9-C12, n-alkanes, isoalkanes, cyclics, <2% aromatics and C16-C20 n-alkanes, isoalkanes, cyclics, <2% aromatics showing respectively a NOAEL >1000 mg/kg/day for developmental toxicity and a NOAEL>1000 mg/kg/day for both maternal and developmental toxicity.
Additional information
Two developmental studies are available on C9-C12, n-alkanes, isoalkanes, cyclics, <2% aromatics and C16 -C20 n-alkanes, isoalkanes, cyclics, <2% aromatics showing a NOAEL higher than 1000 mg/kg/day for maternal and developmental toxicity. Based on these results, Paraffins (petroleum), normal C>10 is also expected not to cause developmental and maternal toxicity.
Justification for classification or non-classification
These findings do not warrant the classification of C10 -C17, n-alkanes, <2% aromatic hydrocarbons as a reproductive or developmental toxin under the new Regulation (EC) 1272/2008 on classification, labeling and packaging of substances and mixtures (CLP) or under the Directive 67/548/EEC for dangerous substances.
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.
