Phosphonic acid, mixed C12-20-alkyl and C14-18-unsatd. alkyl derivs.

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:

Between 17 October 2011 and 25 October 2011.

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

other: Valid and conclusive guideline study under GLP

Reason / purpose for cross-reference:

reference to same study

Qualifier:

according to guideline

Guideline:

EU Method A.9 (Flash-Point)

Version / remarks:

Commission Regulation (EC) No 440/2008 of 30 May 2008

Deviations:

no

GLP compliance:

yes

Remarks:

Department of Health of Government of the U.K., inspection 19-21 July 2011

Type of method:

equilibrium method closed cup

Flash point:

201 °C

Atm. press.:

99.5 kPa

Remarks on result:

other: After pressure correction the flash point of the test item has been determined to be 201.42 ± 2 °C.

Table 1: Observations

Temperature [°C]	Observations
21.0, 26.0, 31.0, 36.0 and 41.0	No flash
46.0 and 51.0	No flash; test flame was extinguished.
56.0, 61.0, 66.0 and 71.0	No flash
71.0 (fresh sample), 76.0, 81.0, 86.0, 91.0 and 96.0	No flash
101.0 (fresh sample), 106.0, 111.0, 116.0, 121.0, 126.0, 131.0, 136.0, 141.0, 146.0 and 151.0	No flash
151.0 (fresh sample), 156.0, 161.0, 166.0, 171.0, 176.0, 181.0, 186.0, 191.0, 196.0 and 201.0	No flash
201.0 (fresh sample)	A blue flash spread across the sample cup.
196.0 (fresh sample), 197.0, 198.0, 199.0, 200.0 and 201.0	No flash
201.0 (fresh sample)	A blue flash spread across the sample cup.
201.0 (fresh sample)	A blue flash spread across the sample cup.
199.0 (fresh sample)	No flash
199.0 (fresh sample)	No flash

Atmospheric pressure: 99.5 kPa

Corrected flash point: 201.420 °C

Conclusions:

Flash point 201.42 ± 2 °C

Executive summary:

The flash point of the test item was determined in a GLP-compliant study using a closed cup equilibrium method according to the EU A.9 (2008). The experiment is deemed valid, conclusive and thus suitable for assessment without restrictions.

Aliquots of the test item were injected into the sample cup of test apparatus. The sample was heated and allowed to equilibrate at the set temperature. The test flame was introduced into the sample cup for approximately 2½ s by sliding the cup shutter open. Observations were made for ignition of the vapour. If no ignition occurred, the temperature was increased and the test flame re-introduced. This was repeated until the lowest reproducible temperature at which a flash occurred, using a fresh sample, was determined.

Several times at 199 °C and at 200 °C no flash was observed, while at 201 °C measurements whenever a fresh sample was used a blue flash spread across the sample cup. As the observations were made at an atmospheric pressure of 99.5 kPa the flash point of the test item has been corrected to 201.42 ± 2 °C for standard pressure (ISO 5011, i.e. 101.3 kPa).

In conclusion the flash point was determined to be 201.42 ± 2 °C.

Description of key information

Flash point 201.42 ± 2 °C (EU Method A.9)

Key value for chemical safety assessment

Flash point at 101 325 Pa:

201.42 °C

Additional information

The flash point was determined in a GLP-compliant study (Tremain & Atwal 2011, Harlan Report no. 41103264) using a closed cup equilibrium method according to the EU A.9 (2008) protocol. The experiment is deemed valid, conclusive and thus suitable for assessment without restrictions. Several times at 199 °C and at 200 °C no flash was observed, while at 201 °C measurements whenever a fresh sample was used a blue flash spread across the sample cup. After pressure correction the flash point of the submission item has been determined to be 201.42 ± 2 °C.