Acetic acid, chloro-, sodium salt, reaction products with 4,5-dihydro-2-undecyl-1H-imidazole-1-ethanol and sodium hydroxide

Auto flammability

Link to relevant study record(s)

Reference

Reference 1

Endpoint:

auto-ignition temperature (liquids)

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

Guideline:

EU Method A.15 (Auto-Ignition Temperature (Liquids and Gases))

Deviations:

no

Qualifier:

according to guideline

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

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. QA statement)

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.

Reference 2

Endpoint:

relative self-ignition temperature (solids)

Type of information:

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

Adequacy of study:

key study

Justification for type of information:

The rationale to read across the data is attached in Section 13.

Reason / purpose for cross-reference:

read-across source

Key result

Remarks on result:

no self ignition observed under the test conditions

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.