Registration Dossier
Registration Dossier
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EC number: 614-283-9 | CAS number: 68127-59-3
Stability: thermal, sunlight, metals
Administrative data
Link to relevant study record(s)
Description of key information
Exotherm, first onset at ca. 195°C, ΔH=-31 J/g, second onset at ca. 270°C, ΔH=-451 J/g, Bailey 2007
Exotherm, first onset at ca. 190°C, ΔH=-7, J/g, second onset at ca. 265°C, ΔH=-552 J/g, Bailey 2007
Additional information
Both batches showed two exotherm onsets and for both the second exotherm onset was higher (at 270°C and ΔH=-451J/g for the firts batch and at 265 °C and ΔH=-552J/g for the second batch).
Both data were in good agreement.
Justification for classification or non-classification
"Self-reactive substances and mixtures":
The heat of decomposition measured in the screening tests was > 300 J/g.
Although the thermal stability data from the tests give an indication that the substance would be thermally stable if carring out the SADT test at 75°C, the current information are not conclusive for the classification and labelling purpose.
"Self-heating substances and mixtures":
According to the Guidance on the Application of the CLP Criteria (ECHA-12-G-06-EN, Version 2.0, April 2012, p 151), substances with a melting point < 160 °C should not be considered for classification in the "self-heating substances and mixtures" hazard class, if the substance is completely molten up to this temperature. The pure substance has a melting point of 111°C.
Based on the available information the substance does not meet the criteria for classification as a "self-heating substance" under Regulation (EC) 1272/2008, Annex I, Part 2, 2.11.2.
"Corrosive to metals":
Based on Regulation (EC) No 1272/2008 (CLP), Annex I, 2.16.2.1, the Guidance on the Application of the CLP Criteria (ECHA-12-G-06-EN, Version 2.0, April 2012, p 191) states that only substances, for which the application of the test “C.1” described in part III, section 37 of the UN-MTC (4th revised edition) is relevant, need to be considered for classification in the “corrosive to metals” hazard class. The given test is only applicable for liquids and "solids that may become liquid during transport". The technical grade substance is a solid (melting point of the pure substance: 111 °C), thus the test is not applicable.
Based on the available information the substance does not meet the criteria for classification as a "corrosive to metals" under Regulation (EC) 1272/2008, Annex I, Part 2, 2.16.2; reason for non-classification: conclusive but not sufficient for classification.
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.
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