Disilver oxide

Flammability

Link to relevant study record(s)

Reference

Reference 1

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 2

Endpoint:

flammable solids

Data waiving:

study scientifically not necessary / other information available

Justification for data waiving:

other:

Reference 3

Endpoint:

substances / mixtures which in contact with water emit flammable gases

Remarks:

flammability in contact with water

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

Description of key information

Pyrophoricity:
Testing for pyrophoric properties is not considered to be required, since this substance is stable at ambient temperature. This substance also does not contain any chemical groups that might lead to spontaneous ignition a short time after coming in contact with air at room temperature (circa 20°C). Since disilver oxide contains only oxygen and silver in oxidised form (+I) it is intrinsically not combustible. Furthermore, long-term industrial experience in handling shows that the substance does not ignite in contact with air.

Flammability solids:
Disilver oxide contains only oxygen and silver in an oxidised state (+I) and can thus be assumed to be not combustible. Even in the elemental state, silver is not flammable. For the same reason (non-combustible), it can also be safely assumed that disilver oxide does not exhibit pyrophoric properties, nor does it react with water under formation of flammable gases. Thus, no concern regarding flammability is given, supported by long-term industrial experience. In consequence, no classification is required.

Flammability (contact with water):
Testing of flammability in contact with water is not considered to be required, because the substance does not contain groups that might lead to a reaction with water or damp air, leading to the development of dangerous amounts of gas or gases which may be highly flammable. Furthermore, long-term industrial experience in practical handling of the substance shows that it does not react violently with water. Instead disilver oxide is only slightly soluble in water.

Key value for chemical safety assessment

Flammability:

non flammable

Justification for classification or non-classification

Disilver oxide contains only oxygen and silver in an oxidised state (+I) and can thus be assumed to be not combustible. Even in the elemental state, silver is not flammable. For the same reason (non-combustible), it can also be safely assumed that disilver oxide does not exhibit pyrophoric properties, nor does it react with water under formation of flammable gases. Thus, no concern regarding flammability is given, supported by long-term industrial experience. in consequence, no classification is required.