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EC number: 295-442-6
CAS number: 92045-60-8
A complex combination of hydrocarbons obtained by subjecting a petroleum naphtha to a sweetening process to convert mercaptans or to remove acidic impurities. It consists of hydrocarbons having carbon numbers predominantly in the range of C4 through C5, predominantly C5, and boiling in the range of approximately minus 10°C to 35°C (14°F to 95°F).
Standard bioaccumulation studies are not applicable to petroleum UVCB
substances, therefore in accordance with Annex XI Section 1.3 testing is
not scientifically necessary and the endpoint has been fulfilled using
QSAR calculations for relevant constituents. Full justifications for
this QSAR are presented in 'Attached justification', but in brief these
are justified because:
- the results are obtained from a QSAR model whose scientific validity
has been established
- petroleum substances fall within the applicability domain of the QSAR
- results are adequate for the purposes of risk assessment
- adequate and reliable documentation is provided
Calculated BCF for constituents of this substance range between 0.4 and
71100 L/kg. It should be borne in mind that this is the full range of
predicted values, and that this may be misleading or unrepresentative of
the properties of the UVCB substance as a whole. The range should
therefore be treated with caution and not taken out of context. The
substance is a hydrocarbon UVCB. Standard tests for this endpoint are
intended for single substances and are not appropriate for this complex
substance. However, this endpoint is characterised using quantitative
structure property relationships for representative hydrocarbon
structures that comprise the hydrocarbon blocks used to assess the
environmental risk of this substance with the PETRORISK model (see
Product Library in PETRORISK spreadsheet attached in IUCLID section 13).
For purposes of PBT assessment, the substance has been assessed using a
combination of QSAR predictions and confirmatory experimental testing
for representative constituents using a hydrocarbon block approach. For
details see report titled 'Evaluation of PBT for Petroleum Substances'
in IUCLID section 13.
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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