Methyl 4-[[(2,5-dichlorophenyl)amino]carbonyl]-2-[[2-hydroxy-3-[[(2-methoxyphenyl)amino]carbonyl]-1-naphthyl]azo]benzoate

Auto flammability

Link to relevant study record(s)

Reference

Reference 1

Endpoint:

relative self-ignition temperature (solids)

Type of information:

experimental study

Adequacy of study:

key study

Study period:

2003

Reliability:

2 (reliable with restrictions)

Rationale for reliability incl. deficiencies:

other: Guideline study (UN Div. 4.2) with acceptable restrictions

Qualifier:

according to guideline

Guideline:

other: UN Div. 4.2

Relative self-ignition temperature:

> 140 °C

Remarks on result:

other:

Remarks:

at atm. press. of ca.1013.0 hPa

The one liter sample held at 140 °C rose to only 148 °C (delta T = 8 °C) and held this temperature for the rest of the test, just beginning to drop near the end. This was an unusual result, normally the temperature peaks in the first few hours then drops off.

The oven was supposed to work correctly.

As a temperature rise of 60 °C is required for a "positive" test, the small temperature rise of 8 °C in this test means that the substance is not self-heating at this sample size and temperature.

Conclusions:

Very weak self-heating of 8 °C was observed in the hot storage test of a 1 L sample at 140 °C. The test substance is therefore not self heating according to UN Div. 4.2.

Executive summary:

A test substance sample of 1 L was subject to a hot storage test at 140 °C according to UN Div. 4.2. Very weak self-heating of 8 °C was observed. The substance is not self-heating at this sample size and temperature.

Reference 2

Endpoint:

relative self-ignition temperature (solids)

Type of information:

experimental study

Adequacy of study:

key study

Study period:

2010

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

other: Test procedure according to national standards (VDI 2263).

Qualifier:

according to guideline

Guideline:

other: VDI 2263

Relative self-ignition temperature:

ca. 280 °C

Remarks on result:

other:

Remarks:

at atm. press. of ca.1013.0 hPa

Self-heating of the test item was observed at 280 °C (max. temp. ca. 350 °C). Another self-heating effect was observed at ca 400 °C (max. temp. ca. 425 °C). The wire mesh basket was empty after the test, which indicates liquidation and self-heating of the residues at 400 °C.

The mixture of the test item with kieselguhr (1:1) showed self-heating at 310 °C (max. temp. ca.375 °C) and at 350 °C (max. temp. ca. 800 °C)

These observations are explained by exothermal decomposition of the test substance.

Conclusions:

Self-heating of the test item starts at 280 °C. No classification in class 4.2 according to UN transport regulations required.

Executive summary:

Self-ignition of the test substance was determined by heating a sample in the Grewer oven according to VDI 2263. Self-heating of the test item starts at 280 °C.

Reference 3

Endpoint:

relative self-ignition temperature (solids)

Type of information:

read-across from supporting substance (structural analogue or surrogate)

Adequacy of study:

key study

Study period:

2003

Reliability:

2 (reliable with restrictions)

Rationale for reliability incl. deficiencies:

other: Guideline study (UN Div. 4.2) with acceptable restrictions

Justification for type of information:

See Rationale and Justification for the Analogue Read-Across Approach for the registration of the Nanoform of Pigment Red 188 using Pigment Red 22, Pigment Red 112 and Pigment Orange 38 as Source Substances (Chapter 13)

Reason / purpose for cross-reference:

read-across source

Qualifier:

according to guideline

Guideline:

other: UN Div. 4.2

Relative self-ignition temperature:

140 °C

Remarks on result:

no self ignition observed under the test conditions

Remarks:

Very weak self-heating of 8 °C was observed in the hot storage test of a 1 L sample at 140 °C.

The one liter sample held at 140 °C rose to only 148 °C (delta T = 8 °C) and held this temperature for the rest of the test, just beginning to drop near the end. This was an unusual result, normally the temperature peaks in the first few hours then drops off.

The oven was supposed to work correctly.

As a temperature rise of 60 °C is required for a "positive" test, the small temperature rise of 8 °C in this test means that the substance is not self-heating at this sample size and temperature.

Conclusions:

Very weak self-heating of 8 °C was observed in the hot storage test of a 1 L sample at 140 °C. The test substance is therefore not self heating according to UN Div. 4.2.

Executive summary:

A test substance sample of 1 L was subject to a hot storage test at 140 °C according to UN Div. 4.2. Very weak self-heating of 8 °C was observed. The substance is not self-heating at this sample size and temperature.

Reference 4

Endpoint:

relative self-ignition temperature (solids)

Type of information:

read-across from supporting substance (structural analogue or surrogate)

Adequacy of study:

key study

Study period:

2010

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

other: Test procedure according to national standards (VDI 2263).

Justification for type of information:

See Rationale and Justification for the Analogue Read-Across Approach for the registration of the Nanoform of Pigment Red 188 using Pigment Red 22, Pigment Red 112 and Pigment Orange 38 as Source Substances (Chapter 13)

Reason / purpose for cross-reference:

read-across source

Qualifier:

according to guideline

Guideline:

other: VDI 2263

Relative self-ignition temperature:

280 °C

Remarks on result:

no self ignition observed under the test conditions

Remarks:

Very weak self-heating of 8 °C was observed in the hot storage test of a 1 L sample at 140 °C.

Self-heating of the test item was observed at 280 °C (max. temp. ca. 350 °C). Another self-heating effect was observed at ca 400 °C (max. temp. ca. 425 °C). The wire mesh basket was empty after the test, which indicates liquidation and self-heating of the residues at 400 °C.

The mixture of the test item with kieselguhr (1:1) showed self-heating at 310 °C (max. temp. ca.375 °C) and at 350 °C (max. temp. ca. 800 °C)

These observations are explained by exothermal decomposition of the test substance.

Conclusions:

Self-heating of the test item starts at 280 °C. No classification in class 4.2 according to UN transport regulations required.

Executive summary:

Self-ignition of the test substance was determined by heating a sample in the Grewer oven according to VDI 2263. Self-heating of the test item starts at 280 °C.

Description of key information

Self-ignition of the test substance was determined by heating a sample in the Grewer oven according to VDI 2263. Self-heating of the test item starts at 280 °C.

A test substance sample of 1 L was subject to a hot storage test at 140 °C according to UN Div. 4.2. Very weak self-heating of 8 °C was observed. The substance is not self-heating at this sample size and temperature.

Key value for chemical safety assessment

Autoflammability / Self-ignition temperature at 101 325 Pa:

140 °C