Registration Dossier

Physical & Chemical properties

Auto flammability

Currently viewing:

Administrative data

Link to relevant study record(s)

Referenceopen allclose all

Endpoint:
auto-flammability
Type of information:
experimental study
Adequacy of study:
key study
Study period:
August 17, 2011 - January 5, 2012
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Qualifier:
according to
Guideline:
EU Method A.15 (Auto-Ignition Temperature (Liquids and Gases))
Deviations:
no
Qualifier:
according to
Guideline:
other: Deutsches Institut für Normung (DIN), DIN Guide 51794: "Determining the Ignition Temperature of Petroleum Products", May 2003
Deviations:
no
Qualifier:
according to
Guideline:
other: International Electrotechnical Commission (IEC), IEC standard 79-4: "Electrical Apparatus for Explosive Gas Atmospheres, Part 4, Method of Test for Ignition Temperature", 1975
Deviations:
no
GLP compliance:
yes (incl. certificate)
Key result
Auto-ignition temperature:
470 °C
Atm. press.:
>= 1 005.9 - <= 1 030.6 hPa
Remarks on result:
other: Auto-ignition temperature of an aqueous solution (with a solid content of approximately 39%)

Preliminary test

The estimated auto-ignition temperature was 495°C.

Main study

Test

Volume

[μl]

Auto-ignition

temperature

[°C]

Ignition delay

[s]

Colour of the

flame

Minimum

auto-ignition

temperature

[°C]

Test 1

70

494

22

Orange

470

90

477

35

Orange

150

470

33

Orange

200

486

37

Orange

Test 2

100

480

30

Orange

476

225

476

40

Orange

300

479

45

Orange

Test 3

160

483

36

Orange

475

250

475

43

Orange

400

477

41

Orange

- Ignition of the test substance within 5 minutes after introduction was observed with each sample volume and with each test a minimum auto-ignition temperature was obtained

- The maximum deviation between the three values was < 20°C. According to the guidelines, no further testing was required.

- The lowest temperature at which ignition of the test substance occurred was 470°C. This temperature was a multiple of 5°C and therefore given as the auto-ignition temperature of the test substance.

Conclusions:
A commercially available auto-ignition temperature apparatus was used for the determination of the degree of auto-ignitability of an aqueous solution of the substance, according to EC, DIN and IEC guidelines and according to GLP principles. The aqueous solution is auto-ignitable with an auto-ignition temperature of 470°C at atmospheric pressures between 1005.9 and 1030.6 hPa.
Endpoint:
relative self-ignition temperature (solids)
Type of information:
read-across from supporting substance (structural analogue or surrogate)
Adequacy of study:
key study
Reason / purpose:
read-across source
Key result
Remarks on result:
other: As no exothermic effect of the test substance was observed, the substance is considered not self-ignitable.

A

Conclusions:
In accordance with EU Method A.16 (2008) and according to GLP principles the self-ignition temperature of the substance was determined using a temperature programmed laboratory oven, a stainless steel wire mesh cube, NiCr/NiAl thermocouples and a temperature recording device. As no exothermic effect of the test substance was observed, the substance is considered not self-ignitable. This result is read across to the registered substance.

Description of key information

Based on a study conducted with a substance analogue (C12-C14 alkyl derivatives), the substance is considered not self-ignitable. Aqueous solutions of the substance are auto-ignitable with an auto-ignition temperature of approximately 470°C.

Key value for chemical safety assessment

Autoflammability / Self-ignition temperature at 101 325 Pa:
470 °C

Additional information

The self-ignition temperature of a substance-analogue was determined in accordance with EU Method A.16 (2008) and according to GLP principles. A freeze dried aqueous solution was used in this study.

Commercially available auto-ignition temperature apparatus was used for the determination of the degree of auto-ignitability of an aqueous solution of the substance, according to EC, DIN and IEC guidelines and according to GLP principles. The rationale to read across the data is attached in Section 13.