Tin disulphide

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:

03 February 2011

Reliability:

2 (reliable with restrictions)

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:

no

Key result

Relative self-ignition temperature:

348 °C

Remarks on result:

other: The air pressure was not provided but since it was explicidly mentioned that it was changed, it can be assumed that the test was performed as normal air pressure.

Conclusions:

The sample does not fulfil the criteria of the transport class 4.2 "self-heating substances" and therefore can be excluded from this hazard class. According to the UN "Manual of test & Criteria", Appendix 6, Screening Procedures, point 5.2, the classification procedure for self-heating substances need not to be applied if the results of a screening test can be adequately correlated with the classification test and an appropriate safety margin is applied. Point 5.2 (a) refers to the Grewer-oven test (VDI guideline 2263, part 1, 1990). A sample volume of 6 cm3 is tested by linear heating under air atmosphere. Following the judgement criterion the execution of the UN test N.4 is only necessary if the onset-temperature in the Screening test is lower than 220 °C. The testing procedure of the Grewer-oven test is comparable with the procedure used in the A.16 test. The A.16 test uses a sample volume of 8 cm3. Therefore the result of the A.16-test is more conservative in safety terms in comparison with the Grewer-oven test. Based on the result of the A.16-test the assessment was performed. The EC-test A.16 showed begin of an exothermic reaction at about 348 °C. Therefore the prescribed tests following UN test N.4 were not necessary.

Executive summary:

The sample does not fulfil the criteria of the transport class 4.2 "self-heating substances" and therefore can be excluded from this hazard class. According to the UN "Manual of test & Criteria", Appendix 6, Screening Procedures, point 5.2, the classification procedure for self-heating substances need not to be applied if the results of a screening test can be adequately correlated with the classification test and an appropriate safety margin is applied. Point 5.2 (a) refers to the Grewer-oven test (VDI guideline 2263, part 1, 1990). A sample volume of 6 cm3 is tested by linear heating under air atmosphere. Following the judgement criterion the execution of the UN test N.4 is only necessary if the onset-temperature in the Screening test is lower than 220 °C. The testing procedure of the Grewer-oven test is comparable with the procedure used in the A.16 test. The A.16 test uses a sample volume of 8 cm3. Therefore the result of the A.16-test is more conservative in safety terms in comparison with the Grewer-oven test. Based on the result of the A.16-test the assessment was performed. The EC-test A.16 showed begin of an exothermic reaction at about 348 °C. Therefore the prescribed tests following UN test N.4 were not necessary.

Description of key information

The sample does not fulfil the criteria of the transport class 4.2 "self-heating substances" and therefore can be excluded from this hazard class.

Additional information

The sample does not fulfil the criteria of the transport class 4.2 "self-heating substances" and therefore can be excluded from this hazard class. According to the UN "Manual of test & Criteria", Appendix 6, Screening Procedures, point 5.2, the classification procedure for self-heating substances need not to be applied if the results of a screening test can be adequately correlated with the classification test and an appropriate safety margin is applied. Point 5.2 (a) refers to the Grewer-oven test (VDI guideline 2263, part 1, 1990). A sample volume of 6 cm3 is tested by linear heating under air atmosphere. Following the judgement criterion the execution of the UN test N.4 is only necessary if the onset-temperature in the Screening test is lower than 220 °C. The testing procedure of the Grewer-oven test is comparable with the procedure used in the A.16 test. The A.16 test uses a sample volume of 8 cm3. Therefore the result of the A.16-test is more conservative in safety terms in comparison with the Grewer-oven test. Based on the result of the A.16-test the assessment was performed. The EC-test A.16 showed begin of an exothermic reaction at about 348 °C. Therefore the prescribed tests following UN test N.4 were not necessary.