Zirconium zircon with encapsulated cadmium selenium sulphide

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:

flammable solids

Data waiving:

study scientifically not necessary / other information available

Justification for data waiving:

other:

Reference 3

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

Description of key information

Testing of flammability does not appear scientifically necessary:

- Testing of flammability of solids (A.10) is not considered to be required, since the pigment was produced by high temperature calcination, therefore testing of flammability is not considered to be required. Furthermore, long-term industrial experience in handling shows that the substance is not flammable.

- Testing for flammability in contact with water (A.12) 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.

- Testing of pyrophoric properties of solids and liquids (A.13) is not considered to be required, since the substance is stable at ambient temperature. It does not contain any chemical group that might lead to spontaneous ignition a short time after coming in contact with air at room temperature (approx. 20 °C).

Key value for chemical safety assessment

Flammability:

not classified

Additional information

Flammability:

The study does not need to be conducted. According to the `ECHA Guidance on the Application of the CLP Criteria (July 2017) section 2.7.4: Classification of substances and mixtures as flammable solids´ indicate, that a test according to EU Method A.10 (flammability of solids), does not need to be conducted:
“…For inorganic material, testing may be waived in cases where the substance is commonly known to be not flammable (i.e. stable salts or metal oxides) or where a flammability hazard can be excluded by any other scientific reasoning…”.and “…For inorganic solids, the classification as flammable is rather rare…”.
Zirconium zircon with encapsulated cadmium selenium sulphide is an inorganic pigments. The pigment was produced by high temperature calcination, therefore testing of flammability is not considered to be required. Furthermore, long-term industrial experience in handling shows that the substance is not flammable.

Phyrophoric properties:

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. Furthermore, long-term industrial experience in handling shows that the substance does not ignite spontaneously in contact with air.

 

Flammability in contact with water:

Testing for 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 with water, and recent experimental testing for water solubility has also not reported any formation of gases.

Justification for classification or non-classification

Zirconium zircon with encapsulated cadmium selenium sulphide does not need to be classified according to CLP Regulation (EC) No 1272/2008 since it is not highly flammable.