Registration Dossier
Registration Dossier
Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.
The new ECHA CHEM database has been released by ECHA, and it now contains all REACH registration data. There are more details on the transition of ECHA's published data to ECHA CHEM here.
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EC number: 231-104-6 | CAS number: 7439-95-4
Auto flammability
Administrative data
Link to relevant study record(s)
Description of key information
The ignition temperature of massive magnesium is very close to its melting point of 650 degrees C (1,202 degrees F).(See Table 2.) However, ignition of magnesium in certain forms may occur at temperatures well below 650 degrees C (1,200 degrees F). For example, magnesium ribbons and shavings can be ignited under certain conditions at about 510 degrees C (950 degrees F), and finely divided magnesium powder can ignite below 482 degrees C (900 degrees F).
Key value for chemical safety assessment
- Autoflammability / Self-ignition temperature at 101 325 Pa:
- 650 °C
Additional information
The ignition temperature of massive magnesium is very close to its melting point of 650 degrees C (1,202 degrees F).(See Table 2.) However, ignition of magnesium in certain forms may occur at temperatures well below 650 degrees C (1,200 degrees F). For example, magnesium ribbons and shavings can be ignited under certain conditions at about 510 degrees C (950 degrees F), and finely divided magnesium powder can ignite below 482 degrees C (900 degrees F).
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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