Registration Dossier
Registration Dossier
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EC number: 228-036-4 | CAS number: 6092-54-2
Stability: thermal, sunlight, metals
Administrative data
Link to relevant study record(s)
Description of key information
Three differential scanning calorimetry studies and two SADT tests have been performed in order to determine whether the substance should be considered to be self-reactive.
The substance is not self-reactive.
Additional information
There are three differential scanning calorimetry (DSC) studies available and one SADT test.
Two DSC studies were performed according to the DIN 51007 guideline. (BASF, 2010 and BASF, 2011). Exothermic reactions were observed in these two test: BASF, 2010: First exothermic reaction: Onset temperature of 120°C, peak temperature of 186°C, released amount of heat 370 J/g, the reaction is self accelerating; Second exothermic reaction: Onset temperature of 310°C, peak temperature of 330°C, released amount of heat 110 J/g, self acceleration was not investigated. BASF, 2011: First exothermic reaction: Onset temperature of 145°C, peak temperature of 325°C, released amount of heat 305 J/g, the reaction is self accelerating; Second exothermic reaction: Onset temperature of 420°C, released amount of heat >250 J/g, the reaction is self accelerating
The third DSC study was performed according to OECD 113 and was used to determine the starting temperature for a SADT test (Siemens AG, 2015a). The test item showed an exothermal effect in the temperature range 150 - 195 °C with a maximum enthalpy of -16 J/g. Above approximately 210 °C the baseline showed an increasing tendency which could have been caused by an exothermal effect.
A first SADT test (Self-Accelerating Decomposition Temperature)(adiabatic heat storage test) was performed according to UN Manual of Test and Criteria, H2 (Siemens AG, 2015b). At a test item temperature of about 106 °C the test item thermocouple stopped working.The test was aborted shortly after this malfunction occurred. The malfunction could clearly be linked to the corrosion inside the autoclave. A further evaluation of the test was therefore not possible. In addition to the early abortion of the test even the existing data could be influenced by a reaction of the test item with the material of the autoclave and the thermocouple. The test was not repeated as it can be expected that the same corrosion would occur.
A second SADT test (Self-Accelerating Decomposition Temperature)(adiabatic heat storage test) was performed according to UN Manual of Test and Criteria, H4 (BASF SE, 2015). The substance was storaged at 75 °C for 181.3 h without any temperature rise. According to this, the SADT is higher than 75.0 °C.
Justification for classification or non-classification
Based on a SADT >75 °C, the substance does not have to be classified according to Regulation (EC) No. 1272/2008.
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