Reaction mass of 3-(4-methyl-3-pentenyl)cyclohex-3-ene-1-carbonitrile and 4-(4-methyl-3-pentenyl)cyclohex-3-ene-1-carbonitrile

Auto flammability

Link to relevant study record(s)

Reference

Endpoint:

auto-ignition temperature (liquids)

Type of information:

experimental study

Adequacy of study:

key study

Study period:

21 June 2018

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

GLP compliance:

yes (incl. QA statement)

Specific details on test material used for the study:

TEST ITEM INFORMATION
Name: Reaction mass of 3-(4-methyl-3-pentenyl)cyclohex-3-ene-1-carbonitrile and 4-(4-methyl-3-pentenyl)cyclohex-3- ene-1-carbonitrile
Other name:Azuril
CAS number: 8084-04-8/21690-43-7
Batch/Lot number: A170421E
Appearance: Clear, almo st colourless liquid
Purity:99.35%
Expiry date: 06 June 2019
Storage conditions: Controlled room temperature (15-25°C, below 70 RH%), under inert gas, protected from humidity
Safety precautions:Routine safety precautions (lab coat, gloves, safety glasses, face mask) for unknown materials were applied to assure personnel health and safety.

Key result

Auto-ignition temperature:

ca. 346 °C

Atm. press.:

>= 97.5 - <= 97.7 kPa

The temperature distribution was steady outside the flask.

Conclusions:

The measured auto-ignition temperature of the test material Azuril (Reaction mass of 3-(4-methyl-3-pentenyl)cyclohex-3-ene-1-carbonitrile and 4-(4-methyl-3-pentenyl)cyclohex-3-ene-1-carbonitrile) was determinted to be 346°C at an atmospheric pressure range of 97.5-97.7 kPa.

Executive summary:

The auto-ignition temperature of Azuril was determined according to the EU Method A.15. The measured auto-ignition temperature of the test material Azuril was determinted to be 346°C at an atmospheric pressure range of 97.5-97.7 kPa.

Description of key information

The auto-ignition temperature of Azuril was determined according to the EU Method A.15. The measured auto-ignition temperature of the test material Azuril was determinted to be 346°C at an atmospheric pressure range of 97.5-97.7 kPa.

Key value for chemical safety assessment

Autoflammability / Self-ignition temperature at 101 325 Pa:

346 °C

Additional information

The aim of this study was to determine the auto-ignition temperature of the test material Azuril (Reaction mass of 3 -(4 -methyl-3 -pentenyl)cyclohex-3 -ene-1 -carbonitrile and 4 -(4 -methyl-3 -pentenyl)cyclohex-3 -ene-1 -carbonitrile). The study was performed according to the EU Method A.15.

Once the flask temperature had reached the desired temperature, the temperature controller was adjusted to maintain the initial temperature (226 °C) within the designated limits and the system was allowed to equilibriate. Approximately 0.1 mL of the test substance was injected into the flask and a timer was started. If ignition was not observed in 10 minutes, the sample was considered non-flammable at the gas temperature and at the concentration applied in the flask. The flask was then completely purged with the hot-air gun and the timer and recorder were reset. The test was repeated at a higher temperature.

If positive ignition occured, the timer was stopped and time interval between sample insertion and ignition was recorded as the ignition delay time. The procedure was then repeated using a large sample. If ignition occured at a lower temperature with the increased sample size, then the process was repeated again using large samples, until the minimum auto-ignition temperature was obtained.

The measured auto-ignition temperature of the test material Azuril (Reaction mass of 3-(4-methyl-3-pentenyl)cyclohex-3-ene-1-carbonitrile and 4-(4-methyl-3-pentenyl)cyclohex-3-ene-1-carbonitrile) was determined to be 346°C at an atmospheric pressure range of 97.5-97.7 kPa.