[2-[[4-[(2-chloro-4-nitrophenyl)azo]phenyl]ethylamino]ethyl](2-hydroxypropyl)dimethylammonium chloride

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:

July 20, 2015 - July 22, 2015

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

other: guideline study; UN test N.4 for self-heating substances

Reason / purpose for cross-reference:

reference to other study

Qualifier:

according to guideline

Guideline:

other: UN N.4

GLP compliance:

no

Remarks on result:

no self ignition observed under the test conditions

Individual results

In the screening test according to Grewer an exothermal effect was observed starting at 200 °C. Due to this result further tests were necessary to classify (or exclude) the test item as “self-heating substance” of class 4.2 according to the transport regulations.

UN test N.4 for self-heating substances

For the test in the 10 cm cube sample at an oven temperature of 140 °C an amount of 663.9 g of the test item was filled in the sample container. The test item temperature reached the oven temperature after approximately 10 h. A maximum test item temperature of 141 °C was reached. After 35 h the test was stopped.

After the measurement the mesh wire basket contained approximately 2 wt.% less test item than at the start. The remaining test item appeared shrunken and discoloured.

Conclusions:

The test item has not to be classified as "self-heating substance".

Executive summary:

The self-heating properties of the test item were determined according to the UN test N.4, described in the “Recommendations on the Transport of Dangerous Goods: Manual of Tests and Criteria”, 5^threvised edition 2009.

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) and also has not to be classified as “self-heating substance” according to chapter 2.11[1], category 2of the GHS (CLP) regulations.

[1]Chapter 2.7 of the UN Globally harmonized system of classification and labelling of chemicals (GHS), 4^th revised edition, 2011 (UN GHS) and also chapter 2.7 in the CLP regulation 1272/2008 (EU GHS).

Description of key information

In a first step the self-ignition temperature of the test item was investigated according to the guideline VDI 2263, sheet 1 (Grewer-Oven). Self-ignition was observed at approximately 200 °C. Due to this result further tests are necessary for the classification of the test item as a "self-heating substance".

Therefore, the self-heating properties of the test item were determined according to the UN test N.4 in a second step. Due a negative result in this second test test item has not to be classified in division 4.2 (self-heating substances) and also has not to be classified as “self-heating substance” according to chapter 2.11[1], category 2of the GHS (CLP) regulations.

[1]Chapter 2.7 of the UN Globally harmonized system of classification and labelling of chemicals (GHS), 4^th revised edition, 2011 (UN GHS) and also chapter 2.7 in the CLP regulation 1272/2008 (EU GHS).