Barium selenate

Auto flammability

Administrative data

Endpoint:

relative self-ignition temperature (solids)

Type of information:

experimental study

Adequacy of study:

key study

Study period:

20th March 2018 - 21st March 2018

Reliability:

1 (reliable without restriction)

Data source

Reference

Reference Type:

study report

Title:

Unnamed

Year:

2018

Report date:

2018

Materials and methods

Test guideline

Qualifier:

equivalent or similar to guideline

Guideline:

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

Version / remarks:

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

Principles of method if other than guideline:

- Principle of test:
The self-ignition behaviour of the test substance is evaluated in a Grewer oven according to VDI 2263, sheet 1 and with respect to the classification procedures of the UN Transport Regulation (Class 4 Division 4.2 and GHS.
The test equipment is an oven with six wire baskets with a volume of 8 cm3, a temperature controller and a temperature recorder.
The wire baskets containing the test substance and reference material (graphite) are heated at a rate of 1.2K/min at atmospheric pressure in an air stream of 100 to 120 L/ hour, up to 425oC. The temperature at which the temperature of the test substance exceeds the temperature of the reference material is considered to be the onset of the self-ignition.

GLP compliance:

yes (incl. QA statement)

Test material

Test material information

Constituent 1

Reference substance name:

Barium selenate

EC Number:

232-113-8

EC Name:

Barium selenate

Cas Number:

7787-41-9

Molecular formula:

Ba.H2O4Se

IUPAC Name:

barium selenate

Test material form:

solid: crystalline

Specific details on test material used for the study:

SOURCE OF TEST MATERIAL
- Source and lot/batch No.of test material: Batch Number 20170425
- Expiration date of the lot/batch: 24th April 2019

RADIOLABELLING INFORMATION (if applicable): N/A

STABILITY AND STORAGE CONDITIONS OF TEST MATERIAL
- Storage condition of test material: room temperature, protected from light.
- Stability under test conditions: Stable

Results and discussion

Relative self-ignition temperature (solids)

Key result

Remarks on result:

no self ignition observed under the test conditions

Remarks:

No self heating observed up to 425oC.

Any other information on results incl. tables

Results are illustrated in attached document CSL-17 -1705.01 (below).

Applicant's summary and conclusion

Conclusions:

Under the conditions of the test no self heating of the test substance was observed.

Executive summary:

The self-ignition behaviour of Barium Selenate was determined in a GLP study performed using a Grewer oven according to VDI 2263, sheet 1 and with respect to the classification procedures of the UN Transport Regulation (Class 4 Division 4.2) and GHS.

Wire baskets containing the test substance, test substance blended with 50% wt Kieselguhr and a reference material (graphite) were heated at a rate of 1.2K/min at atmospheric pressure in an air stream of 100 to 120 L/ hour, up to 425^oC. The pure test item Barium Selenate presented no self-heating properties at atmospheric pressure up to a maximum test temperature of 425^oC.

No classification as self-heating according to GHS/CLP Regulation EC 1272/2008 is required.