Pyrasulfotole

Flammability

Link to relevant study record(s)

Reference

Reference 1

Endpoint:

pyrophoric solids

Type of information:

other: Expert statement

Adequacy of study:

other information

Reason / purpose for cross-reference:

reference to other study

Reason / purpose for cross-reference:

reference to other study

Reference 2

Endpoint:

substances / mixtures which in contact with water emit flammable gases

Type of information:

other: Expert statement

Adequacy of study:

other information

Reason / purpose for cross-reference:

reference to other study

Reference 3

Endpoint:

pyrophoric solids

Data waiving:

study scientifically not necessary / other information available

Justification for data waiving:

other:

Reference 4

Endpoint:

substances / mixtures which in contact with water emit flammable gases

Data waiving:

study scientifically not necessary / other information available

Justification for data waiving:

other:

Reference 5

Endpoint:

flammable solids

Type of information:

experimental study

Adequacy of study:

key study

Study period:

8 Sept 2003 - 14 Oct 2003

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

guideline study

Qualifier:

according to guideline

Guideline:

EU Method A.10 (Flammability (Solids))

Deviations:

no

GLP compliance:

yes (incl. QA statement)

Remarks:

GLP certifying authority: Hess. Ministerium für Umwelt, Landwirtschaft und Forsten, Wiesbaden, Germany

Key result

Test procedure:

burning rate test: preliminary screening test

Remarks on result:

substance does not ignite and propagate combustion either by burning with flame or smouldering along 200 mm of the powder train within the 2 minutes test period

Individual Results - Flammability (solids)

The test item could not be ignited with a flame, the test item melted. The main test is unnecessary because the test item could not be ignited.

 

Final Results - Flammability (solids)

The test item is not a readily combustible solid in the sense of the consolidated version of Guideline 67/548/EEC Annex V, Method A.10.

Reference 6

Endpoint:

self-heating substances / mixtures

Type of information:

experimental study

Adequacy of study:

key study

Study period:

2 June 2017 to 7 August 2017

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

guideline study

Qualifier:

according to guideline

Guideline:

UN Manual of Tests and Criteria: Test N.4 (Test method for self-heating substances)

Deviations:

not specified

GLP compliance:

yes (incl. QA statement)

Remarks:

GLP certifying authority: Hess. Ministerium für Umwelt, Energie, Landwirtschaft und Verbraucherschutz, Wiesbaden, Germany

Key result

Test procedure:

100 mm sample cube at 140°C

Max. temp. reached:

140

Result:

negative outcome (no effect observed)

Remarks on result:

other: Temperature is ºC

Individual results

For the test in the 10 cm cube at an oven temperature of 140 °C ± 2 °C an amount of 801.3 g of the test item was filled in the sample container. The test item temperature reached the oven temperature after approximately 9 hours. No exothermal effect was observed until the end of the test. Due to an exothermal temperature rise <60 K the result was evaluated as negative. After the measurement, the mesh wire basket contained approximately 0.5 wt% less test item than at the start. The remaining test item was visually unchanged.

 

Final result

For the classification the test item was tested according to division 4.2 (self-heating substances) according to the UN test N.4, described in the "Recommendations on the Transport of Dangerous Goods: Manual of Tests and Criteria", 6th revised edition 2015. Due to the fact that a negative result was obtained in the test using a 10 cm sample cube at 140 °C the test item has not to be classified in division 4.2 (self-heating substances) in the sense of UN Manual of Tests and Criteria, Method N.4. Due to the fact that a negative result was obtained in the test using a 10 cm sample cube at 140 °C the test item has not to be classified as "self-heating substance" according to chapter 2.11 of the GHS (CLP) regulations.

Description of key information

No ignition in the preliminary burning rate test (EU Method A.10).

Based on experience in handling and use and the chemical structure pyrophoricity and flammability on contact with water are not to be expected.
The substance does not need to be considered for classification as self-heating since the Bowes-Cameron Cage Test showed a negative result (UN Test N.4).

Key value for chemical safety assessment

Flammability:

not classified

Justification for classification or non-classification

The available data on flammability of the test substance do not meet the criteria for classification according to Regulation (EC) 1272/2008, and are therefore conclusive but not sufficient for classification:

No ignition in a test according EU Method A.10.

Based on chemical structure and experience in handling and use, pyrophoricity and flammability on contact with water are not expected. Based on the results from UN Test N.4, the substance is not self-heating.