[No public or meaningful name is available]

Vapour pressure

Administrative data

Endpoint:

vapour pressure

Type of information:

experimental study

Adequacy of study:

key study

Study period:

2021

Reliability:

1 (reliable without restriction)

Data source

Reference

Reference Type:

study report

Title:

Unnamed

Year:

2021

Materials and methods

Test guideline

Qualifier:

according to guideline

Guideline:

other: ASTM D6378-2018

Principles of method if other than guideline:

The vapor pressure was determined according to “ASTM D6378-2018”: Employing the apparatus, MINIVAP VPXpert Vapor Pressure Tester, a certain volume of the sample is drawn into the temperature controlled chamber with a built-in piston. After sealing the chamber, an expansion is performed in three steps to a final volume of (X+1) times that of the test specimen. After each expansion, the total pressure (TPx) is determined. The partial pressure from dissolved air (PPA) and the solubility of air in the specimen can be calculated from the three resulting pressures. The temperature of the chamber is then increased to a specified value, and the TPx is determined. The vapor pressure (VPx) can be obtained by sub- tracting the PPA in the liquid, which has been gas corrected for the temperature, from TPx.

GLP compliance:

no

Type of method:

other: Three expansion method

Test material

Test material information

Constituent 1

Reference substance name:

Tributyl(ethyl)phosphonium diphenyl phosphate

Cas Number:

2409816-82-4

Molecular formula:

C26H42O4P2

IUPAC Name:

Tributyl(ethyl)phosphonium diphenyl phosphate

Test material form:

liquid

Results and discussion

Vapour pressure

Vapour pressure 1

Temp.:

37.8 °C

Vapour pressure:

< 0.3 kPa

Vapour pressure 2

Temp.:

25 °C

Vapour pressure:

< 0.3 kPa

Vapour pressure 3

Temp.:

20 °C

Vapour pressure:

< 0.3 kPa

Applicant's summary and conclusion

Conclusions:

The vapor pressure of the sample are as following: <0.3 kPa (20℃); <0.3 kPa (25℃); <0.3 kPa (37.8℃).