Registration Dossier
Registration Dossier
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EC number: 943-670-8 | CAS number: -
Auto flammability
Administrative data
Link to relevant study record(s)
Description of key information
Non self-igniting.
Key value for chemical safety assessment
Additional information
The substance is produced and regularly used for many years in Europe, transported in various conditions and in various amounts. Evidence connected to the long experience in handling, use and transport of the substance confirms the non self-ignition properties.
Thus, the substance is expected to be an air-stable compound at room temperature over a prolonged period of time (days), without noticeable or undesirable reactions. In conclusion, for the substance a potential for spontaneous ignition is not expected: the substance can be considered as a no-pyrophoric and no-self-heating solid because it is liable to self-heat by reaction with air and without energy supply.
No reactions with water or emission of flammable gases have ever been noted.
Moreover, three tests were performed on similar substance 1 to examine its self-ignition potential and therefore used as supporting studies: hot storage test, differential thermal analysis (DTA) and testing as per Grewer, according to "Test methods for the Determination of the Safety Characteristic of Dust, VDI 2263, 1990" and to DIN EN 45001.
In the hot storage test, the article showed no significant thermal change at a storage temperature of 150 °C for 120 hours from a safety technology point of view.
In the Differential Thermal Analysis, no exothermic reaction occurred up to 350 °C. The temperature determined as the start of an exothermic decomposition is suitable only as a basis or reference value and is not in all cases suitable to conduct a thermally safe process.
The DTA graph showed no relevant peaks during the test, at all temperatures.
In testing as per Grewer, the exothermic reaction as per Grewer started at 190 °C. A temperature so determined depends upon the test method. Therefore, it only serves as a reference and for comparison purposes. The oxidizing self-heating depends upon the sample size and the duration of the temperature exposure. Increased sample volume will result in auto-ignition at lower surrounding temperatures.
Therefore, the substance Disperse Blue 073 cannot be classified as an auto-flammable substance.
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