Registration Dossier
Registration Dossier
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EC number: 256-462-0 | CAS number: 49744-39-0
Stability: thermal, sunlight, metals
Administrative data
Link to relevant study record(s)
Description of key information
not thermally stable
Additional information
Justification for classification or non-classification
The decomposition of the substance starts below 150°C.
Calculations indicate that in the temperature range 20 -30°C (ambient temperature) and in the absence of cooling, it is borderline whether 25 tons of the test substance would self-heat or not. In any case plenty of time should be available to lower the mass temperature back to 0°C, by manual addition of ice.
The substance shows good thermal stability at ambient temperature, the worst case runaway time is calculated to be 15 days at 30°C. However, on loss of active cooling it is recommended that the test substance should be maintained at 0°C by ice addition, to prevent any possibility of foam-over due to decomposition which may occur if it was left at ambient temperature for extended periods.
Dried diazotised amines are known to be both shock and thermally sensitive, and pose a serious thermal hazard. The diazotised amine should not be allowed to dry out.
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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