Phenol, 2,4-dinitro-, sulfurized, thiosulfonated

Flammability

Link to relevant study record(s)

Reference

Reference 1

Endpoint:

flammable solids

Type of information:

experimental study

Adequacy of study:

key study

Study period:

2017-07-12 - 2018-03-06

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.1 (Test method for readily combustible solids)

Version / remarks:

Rev. 6 (2015)

Deviations:

no

Qualifier:

according to guideline

Guideline:

other: VDI 2263, sheet 1

Version / remarks:

1990

Deviations:

no

GLP compliance:

yes (incl. QA statement)

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

Preliminary Test

The test item did not ignite at room temperature using a flame as ignition source being applied for at least 2 minutes.

Main Test

In the preliminary test the test item could not be ignited by a flame. Thus, the performance of the main test was not necessary.

Interpretation of results:

GHS criteria not met

Conclusions:

The test item CI Solubilised Sulphur Black 1 could not be ignited applying a flame as ignition source for at least 2 minutes.

The test item is classified as follows:
UN Transport Regulation: The product has not to be classified as readily combustible solid in class 4.1 according to the UN Transport Regulation.
GHS (CLP Regulation EC 1272/2008: Annex 1: 2.7): The product has not to be classified as flammable solid according to GHS / CLP Regulation EC 1272/2008 Annex 1: 2.7

Executive summary:

Summary

The test item CI Solubilised Sulphur Black 1 could not be ignited applying a flame as ignition source for at least 2 minutes.

The test item is classified as follows:

UN Transport Regulation: The product has not to be classified as readily combustible solid in class 4.1 according to the UN Transport Regulation.

GHS (CLP Regulation EC 1272/2008: Annex 1: 2.7): The product has not to be classified as flammable solid according to GHS / CLP Regulation EC 1272/2008 Annex 1: 2.7.

Reference 2

Endpoint:

self-heating substances / mixtures

Type of information:

experimental study

Adequacy of study:

key study

Study period:

2017-07-12 - 2018-03-06

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)

Version / remarks:

Rev. 6 (2015)

Deviations:

no

Qualifier:

according to guideline

Guideline:

other: VDI 2263, sheet 1, Grewer Oven

Version / remarks:

1990

Deviations:

no

GLP compliance:

yes (incl. QA statement)

Specific details on test material used for the study:

Reagents: Kieselguhr
Batch No.: TA2082010
Identity and content: Conforms
Certificate of analysis: Certificate of Analysis dated 2016-10-20; Merck KGaA, Frankfurter Straße 250, 64293 Darmstadt
Expiry date: 2021-10-31

Key result

Test procedure:

other: Onset temperature in the Grewer oven

Result:

other: 160 °C

Remarks on result:

other:

Remarks:

On the basis of the results of the screening test on the self-heating in the Grewer Oven a classification of the test item as self-heating substance cannot be excluded.

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:

Remarks:

temperature increase of < 60 °C within 24 hours

Self-ignition in the Grewer Oven

In the investigation of self-heating in the Grewer Oven for the pure test item, an endothermic effect was detected in the temperature range of 40 – 150 °C, which may be caused by the drying of the test item. Starting at a temperature of approx. 160 °C the test item showed a self-heating, which leaded to a maximum temperature of 180 °C. After the measurement a black residue remained in the basket.

For the test item in mixture with Kieselguhr no endothermic or exothermic effects were detected.

Table 1 summarizes the results of the Grewer Oven experiment.

Table 1: Results of the screening test for self-ignition in the Grewer Oven

Experiment	Onset self- ignition / °C	Maximum temperature / °C	Remarks
Pure test item	160	180
Test item in mixture with Kieselguhr (1:1)	--	--

On the basis of the results of the screening test on theself-heating in the Grewer Oven a classification of the test item as self-heating substance cannot be excluded. Further tests have to be performed for the classification.

Bowes-Cameron-Cage Test (UN Test N.4)

140 °C, 100 mm cube sample

The temperature in the centre of the sample did not exceed the oven temperature of 140°C over a time period of 24 h.

Due to the negative result in the 100 mm cube sample at an oven temperature of 140 °C no further tests had to be performed.

Interpretation of results:

GHS criteria not met

Conclusions:

In the Grewer oven the pure test item CI Solubilised Sulphur Black 1 indicated a self-heating at atmospheric pressure starting at a temperature of approx. 160 °C, which leaded to a maximum temperature of 180 °C.

The Bowes-Cameron-Cage test in the 1 L wire basket at 140 °C showed no self-heating of the test item CI Solubilised Sulphur Black 1 within 24 hours.

According to the result of the test on the self-ignition in the Bowes-Cameron-Cage Test (UN-Test N.4) the test item CI Solubilised Sulphur Black 1 is classified as follows:
UN Transport Regulation: On the basis of this result the test item has not to be classified as self-heating substance in Class 4 Division 4.2 according to the UN Transport Regulation.
GHS and EC 1272/2008 (CLP Regulation) Annex 1: 2.11: On the basis of this result the test item has not to be classified as self-heating substance according to EC 1272/2008 (CLP Regulation) Annex 1: 2.11.

Executive summary:

Summary

In the Grewer oven the pure test item CI Solubilised Sulphur Black 1 indicated a self-heating at atmospheric pressure starting at a temperature of approx. 160 °C, which leaded to a maximum temperature of 180 °C.

The Bowes-Cameron-Cage test in the 1 L wire basket at 140 °C showed no self-heating of the test item CI Solubilised Sulphur Black 1 within 24 hours.

According to the result of the test on theself-ignition in the Bowes-Cameron-Cage Test (UN-Test N.4) the test item CI Solubilised Sulphur Black 1 is classified as follows:

UN Transport Regulation:On the basis of this result the test item has not to be classified asself-heating substancein Class 4 Division 4.2 according to the UN Transport Regulation.

GHS and EC 1272/2008 (CLP Regulation) Annex 1: 2.11:On the basis of this result the test item has not to be classified asself-heating substanceaccording to EC 1272/2008 (CLP Regulation) Annex 1: 2.11.

Description of key information

The product has not to be classified as flammable solid according to GHS / CLP Regulation EC 1272/2008 Annex 1: 2.7

Key value for chemical safety assessment

Flammability:

not classified

Additional information

Flammable solids

A study was conducted according Test N.1 (Test method for readily combustible solids) of the UN Manual of Tests and Criteria to determine the flammability of the test substance. The test item was tested without pre-treatment. The test item could not be ignited with a flame in the preliminary test. Therefore the performance of the main test was not necessary

Then test item was not considered for classification as flammable solid.

Flammable gases

The test item is a solid at ambient conditions. This hazard class is only applicable for gases. Thus, the substance was not considered for classification as flammable gas.

 

Flammable liquid

The test item is a solid at ambient conditions. This hazard class is only applicable for liquids. Thus, the substance was not considered for classification as flammable liquid.

 

Pyrophoric solids

The study does not need to be conducted because the substance is known to be stable in contact with air at room temperature for prolonged periods of time (days). Thus, no study was conducted and the substance was not considered for classification as pyrophoric solids.

Pyrophoric liquids

The test item is a solid at ambient conditions. This hazard class is only applicable for liquids. Thus, the substance was not considered for classification as pyrophoric liquid.

 

Self-heating substances and mixtures

A study was conducted according to UN-Test N.4 (Bowes-Cameron-Cage Test). On the basis of this result the test item has not to be classified as self-heating substance.

 

Substances which, in contact with water, emit flammable gases

In accordance with column 2 of REACH Annex VI and with Regulation (EC) No 1272/2008 Annex I section 2.12.4 and ECHA guidance on the application of CLP Criteria section 2.12.4.2 the classification procedure for this hazard class need not to be applied. Based on the experience in handling and use the substance does not react with water and in addition the test substance is not pyrophoric. Thus, no study was conducted and the substance was not considered for classification.

Flammable Aerosols

Section 2.4.2 of Guidance on the application on the CLP Criteria state as follows:

“Aerosols, this means aerosol dispensers, are any non-refillable receptacles made of metal, glass or plastics and containing a gas compressed, liquefied or dissolved under pressure, with or without a liquid, paste or powder, and fitted with a release device allowing the contents to be ejected as solid or liquid particles in suspension in a gas, as a foam, paste or powder or in a liquid state or in a gaseous state." Thus, as the substance does not meet the definition for aerosol, the test for aerosols was waived. Consequently the substance has not to be considered for classification for this hazard class.

In conclusion the substance has not to be considered as flammable gas, flammable liquid, flammable solid, flammable in contact with water, flammable aerosol, pyrophoric solid, pyrophoric liquid or self-heating substance.

Justification for classification or non-classification

In accordance with Annex I Section 2.2, Section 2.3, Section 2.6, Section 2.7, Section 2.9, Section 2.10 Section 2.11, Section 2.12 of Regulation (EC) No 1272/2008, as amended for the twelfth time in Regulation (EU) No 2019/521, and UN GHS Rev 6 (2015) the test item has not to be classified as, flammable liquid, readily combustible solid in class 4 Division 4.1, self-heating substance in Class 4 Division 4.2, substances which in contact with water emit flammable gases in Class 4 Division 4.3, pyrophoric liquid, pyrophoric solid in class 4 Division 4.2, flammable gases in class 2 or as aerosol in class 2.