Reaction mass of copper digluconate, sodium sulphate and copper sulphate

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:

25.02.2019 - 26.02.2019

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

guideline study

Qualifier:

according to guideline

Guideline:

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

GLP compliance:

yes (incl. QA statement)

Specific details on test material used for the study:

The sample was placed on a rotary evaporator at 40°C until no more water evaporated; the sample was spread onto trays and placed in an oven at 40°C for approximately 6 days with frequent agitation. The partially wet sample was removed from the trays and frozen. Whilst frozen the sample was ground to a fine powder then spread on trays and placed back into the oven at 40°C for 24 hours.

Key result

Relative self-ignition temperature:

325 °C

Conclusions:

Relative Self Ignition Temperature: 325°C

Executive summary:

On completion of testing a green and black solid remained. A minor endothermic event was observed at approximately 60°C. This was followed by a small exothermic event with an approximate onset of 118°C. A major exotherm was then observed at 290°C, with the sample temperature peaking at 448°C. The oven temperature when the sample temperature reached 400°C was 325°C.

Description of key information

Relative Self Ignition Temperature: 325°C

Key value for chemical safety assessment

Autoflammability / Self-ignition temperature at 101 325 Pa:

325 °C