Germanium, germanium hydroxide oxides and amorphous silica, recovery products from germanium refining

Auto flammability

Link to relevant study record(s)

Reference

Endpoint:

relative self-ignition temperature (solids)

Type of information:

experimental study

Adequacy of study:

key study

Study period:

23/10/2017

Reliability:

2 (reliable with restrictions)

Rationale for reliability incl. deficiencies:

study well documented, meets generally accepted scientific principles, acceptable for assessment

Qualifier:

equivalent or similar to guideline

Guideline:

EU Method A.16 (Relative Self-Ignition Temperature for Solids)

GLP compliance:

not specified

Key result

Relative self-ignition temperature:

> 1 100 °C

Remarks on result:

no self ignition observed under the test conditions

Conclusions:

Heating RESHS to 1100 °C in air shows no exothermic reactions. We can therefore conclude that this material does not present any auto-ignition risks in air up to 1100°C. A large amount of water is present: more than 55 wt%. The dry samples decompose at about 800 °C.

Executive summary:

TGA/DSC measurements were performed on RESHS. The measurement are made on the Netzsch STA 409 PC. In a constant airflow, the temperature is increased at a rate of 5 °C/min, up to a temperature of 1100 °C. The software Proteus is used to construe the raw data.

Heating RESHS 316 REACH to 1100 °C in air shows no exothermic reactions. We can therefore conclude that this material does not present any auto-ignition risks in air up to 1100°C.

Description of key information

Heating RESHS to 1100 °C in air shows no exothermic reactions. We can therefore conclude that this material does not present any auto-ignition risks in air up to 1100°C.