Sodium [[α,α'-(ethylenediimino)bis[2-hydroxybenzene-1-acetato]](4-)]ferrate(1-)

Auto flammability

Link to relevant study record(s)

Reference

Endpoint:

auto-ignition temperature, other

Remarks:

auto-ignition temperature of solids (Grewer oven)

Type of information:

experimental study

Adequacy of study:

key study

Study period:

2016-09-19 - 2017-01-13

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

guideline study

Qualifier:

according to guideline

Guideline:

other: UN Recommendation on the TRANSPORT OF DANGEROUS GOODS: Manual of Tests and Criteria, Rev. 6 (2015) and UN-Model Regulations, Rev. 19 (2015); VDI 2263 Sheet 1 Grewer oven (1990)

Deviations:

no

GLP compliance:

yes (incl. QA statement)

Auto-ignition temperature:

140 °C

Atm. press.:

101 325 Pa

In the investigation of self-ignition in the Grewer oven for the pure test item an endothermic process was observed starting at a temperature of approx. 100 °C, which leads into an exothermic effect starting at a temperature of about 140 °C. The exothermic effect shows two peaks at a reference temperature of 195 °C and 350 °C with maximum temperatures of approx. 315 °C and 650 °C. A brownish red residue remained in the wire basket after the test.

For the test item in mixture with Kieselguhr an exothermic process was observed starting at a temperature of approx. 120 °C. The exothermic effect shows two peaks at a reference temperature of approx. 200 °C and 360 °C with maximum temperatures of approx. 295 °C and 540 °C.

Results of the Grewer oven experiment:

- pure test item: approx. 140 °C onset self-ignition (max. temperature: 315 °C first peak; 650 °C second peak; cf. figures 1, 2)

- test item in mixture with Kieselguhr (1:1): approx. 120 °C onset self-ignition (max. temperature: 295 °C first peak; 540 °C second peak; cf. figures 1, 2)

Conclusions:

The pure test item indicated self-ignition at atmospheric pressure starting at a temperature of 140 °C.

Executive summary:

The relative self-ignition temperature of the test item was determined according to

- recommendations on the TRANSPORT OF DANGEROUS GOODS: Manual of Tests and Criteria, 6th edition, New York and Geneva, 2015: Appendix 6 Screening Procedures, Division 4.2: Substances which may be liable to spontaneous combustion,

- VDI 2263 (1990), sheet 1, Grewer oven.

The pure test item indicated self-ignition at atmospheric pressure starting at a temperature of 140 °C.

Description of key information

The relative self-ignition temperature of the test item was determined according to

- recommendations on the TRANSPORT OF DANGEROUS GOODS: Manual of Tests and Criteria, 6th edition, New York and Geneva, 2015: Appendix 6 Screening Procedures, Division 4.2: Substances which may be liable to spontaneous combustion,

- VDI 2263 (1990), sheet 1, Grewer oven.

The pure test item indicated self-ignition at atmospheric pressure starting at a temperature of 140 °C.

Key value for chemical safety assessment

Autoflammability / Self-ignition temperature at 101 325 Pa:

140 °C