2-Naphthalenesulfonic acid, 7-amino-4-hydroxy-8-[2-[2-sulfo-4-[[2-(sulfooxy)ethyl]sulfonyl]phenyl]diazenyl]-, potassium sodium salt (1:?:?), coupled with diazotized 2-[(4-amino-5-methoxy-2-methylphenyl)sulfonyl]ethyl hydrogen sulfate

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:

Experiment starting date - 19 June 2003; Experiment end date - 20 June 2003; Study completion date - 09 July 2003.

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)

Deviations:

no

GLP compliance:

yes (incl. QA statement)

Specific details on test material used for the study:

Identity: FAT 40812/A
Batch: WP 8/03
Purity: approx. 75 %
Appearance: Solid, dark red-brownish powder
Expiration date: 23 April 2010
Storage: At room temperature at about 20 °C

Relative self-ignition temperature:

342 °C

Remarks on result:

preliminary test

Conclusions:

The auto-flammability temperature of the test substance is 342 °C.

Executive summary:

The determination of the relative self-ignition temperature of the test item was performed according to the EEC Directive 92/69, Part A, Methods for the determination of physico­ chemical properties, A.16 "Relative self-ignition temperature for solids", EEC Publication No. L383, December 1992. Applying a linear increase in temperature of about 0.5 °C/min, FAT 40812/A showed an exothermic reaction starting at about 350 °C. A maximum temperature of 505.9 °C was measured in the sample cube during the exothermic reaction. At the end of the measurement, the test item was carbonized showing a light greyish surface. FAT 40812/A shows a relative self-ignition temperature of about 342 °C. In conclusion, FAT 40812/A is auto-flammable under the conditions of the test.

Description of key information

The determination of the relative self-ignition temperature of the test item was performed according to the EEC Directive 92/69, Part A, Methods for the determination of physico­ chemical properties, A.16 "Relative self-ignition temperature for solids", EEC Publication No. L383, December 1992. Applying a linear increase in temperature of about 0.5°C/min, FAT 40812/A showed an exothermic reaction starting at about 350 °C. A maximum temperature of 505.9 °C was measured in the sample cube during the exothermic reaction. At the end  of  the measurement, the test item was carbonized showing a light greyish surface. FAT 40812/A shows a relative self-ignition temperature of about 342 °C. In conclusion, FAT 40812/A is auto-flammable under the conditions of the test.

Key value for chemical safety assessment

Autoflammability / Self-ignition temperature at 101 325 Pa:

342 °C