Molybdenum dioxide

Flammability

Link to relevant study record(s)

Reference

Reference 1

Endpoint:

substances / mixtures which in contact with water emit flammable gases

Data waiving:

study scientifically not necessary / other information available

Justification for data waiving:

the study does not need to be conducted because the experience in production or handling shows that the substance does not react with water, e.g. the substance is manufactured with water or washed with water

Reference 2

Endpoint:

pyrophoric solids

Data waiving:

study scientifically not necessary / other information available

Justification for data waiving:

the study does not need to be conducted because the substance is known to be stable in contact with air at room temperature for prolonged periods of time (days) and hence, the classification procedure does not need to be applied

Reference 3

Endpoint:

flammable solids

Data waiving:

study scientifically not necessary / other information available

Justification for data waiving:

other:

Description of key information

Molybdenum dioxide is not flammable, has no pyrophoric properties and does not emit flammable gases in contact with water (see justification for classification or non classifcation)

Key value for chemical safety assessment

Flammability:

not classified

Justification for classification or non-classification

No classification required. Molybdenum dioxide is not flammable. This assessment is based on structural/chemical considerations, long term experience and a test with molybdenum metal powder, which was not flammable. Since MoO2 represents Mo in a higher oxidation state, any violent /rapid reaction resulting in burning can be excluded with certainty.