N,N-Dimethyl-9-dodecenamide

Flash point

Link to relevant study record(s)

Reference

Endpoint:

flash point of flammable liquids

Type of information:

experimental study

Adequacy of study:

key study

Study period:

20 January 2022

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

guideline study

Qualifier:

according to guideline

Guideline:

EU Method A.9 (Flash-Point)

Deviations:

no

Qualifier:

according to guideline

Guideline:

ISO 3679 (Determination of flash point - Rapid equilibrium closed cup method)

Deviations:

no

GLP compliance:

yes (incl. QA statement)

Type of method:

equilibrium method closed cup

Flash point apparatus:

Setaflash apparatus

Flash point:

165.5 °C

Atm. press.:

101.3 kPa

Pre-test:

The flash point of the test item was detected at 164.0°C during the ramp test between 160°C and 190°C.

First Determination:

The flash point of the test item was detected at 165.0°C during the first determination.

An automatic correction was applied to the obtained result because the ambient pressure was not 101.3 kPa but 98.8 kPa. With this correction, the flash point value is 165.5°C at 101.3 kPa.

The appearance of the test item left in the test cup did not change. No sign of decomposition or film formation was observed.

Second Determination:

The flash point was detected at 165.0°C during the second determination.

An automatic correction was applied to the obtained result because the ambient pressure was not 101.3 kPa but 98.8 kPa. With this correction, the flash point value is 165.5°C at 101.3 kPa.

The appearance of the test item left in the test cup did not change. No sign of decomposition or film formation was observed.

Discussion and validation of the results

The flash point of the reference substances CRM, 76.5°C respects also the checking cards limits and complies with the validation criteria of 75.5 +/- 2 °C.

The measured flash point value for the reference substance glycerol, 189.5°C is within the control cards limits and complies with the validation criteria of 192.5 +/- 3.5°C.

The results of the two determinations (165.5°C for both determinations at 101.3 kPa) meet validation criteria (no more than 2°C of difference).

The barometer pressure and the apparatus pressure did not differ by more than 0.5 kPa.

Therefore, the results are considered as valid.

As the two determinations have the same value of the flash point, the selected value for this study is 165.5°C at 101.3 kPa.

Interpretation of results:

GHS criteria not met

Executive summary:

A study was performed to determine the flash point of the test item N,N-dimethyl dodec-9-enamide. The method followed was designed to be compliant with Regulation EC No. 440/2008 Method A.9, “Flash Point” and ISO standard 3679.

The flash point of the test item was determined with a closed cup tester, by an equilibrium method called “Small Scale” (commonly known as Setaflash).

The substance was placed into a test cup and heated using a temperature gradient program. Ignition trials were carried out in order to ascertain whether or not the sample flashes at the temperature tested.

A pre-test followed by two determinations were conducted.

For the pre-test, a flash point of 164.0°C was observed. This data was used to select the range of temperatures for the following determinations.

During the main test, determinations 1 and 2 both gave a corrected flash point of 165.5°C at 101.3 kPa. Moreover the flash point of the reference substances glycerol and CRM respects the checking cards limits.

The corrected flash point of N,N-dimethyl dodec-9-enamide was determined to be 165.5°C at 101.3 kPa.

Description of key information

The corrected flash point was determined to be 165.5°C at 101.3 kPa in a study performed according to EU Method A.9 using an equilibrium closed cup method.

Key value for chemical safety assessment

Flash point at 101 325 Pa:

165.5 °C