Registration Dossier

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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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.

Diss Factsheets

Physical & Chemical properties

Auto flammability

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Administrative data

Link to relevant study record(s)

relative self-ignition temperature (solids)
Data waiving:
study scientifically not necessary / other information available
Justification for data waiving:

Description of key information

Ammonium heptamolybdate is not auto-flammable.

Key value for chemical safety assessment

Additional information

Self-ignition is not considered to be of relevance for this substance, since this would require heat to be developed either by reaction of this substance with oxygen or by exothermic decomposition and which is not lost rapidly enough to the surroundings. Ammonium heptamolybdate contains molybdenum in its highest oxidation state (+VI) in a stable, crystalline matrix. It is intrinsically not combustible and can safely be assumed not to be ignitable or auto-flammable up to the decomposition temperature of ca. 90 °C. In conclusion, the conduct of further experimental verification is not considered to be required (in accordance with section 1 of REACH Annex XI).