Propanoic acid, 2,2,3-trifluoro-3-[1,1,2,2,3,3-hexafluoro-3-(trifluoromethoxy)propoxy]-

Boiling point

Administrative data

Endpoint:

boiling point

Type of information:

experimental study

Adequacy of study:

key study

Study period:

2007

Reliability:

2 (reliable with restrictions)

Rationale for reliability incl. deficiencies:

other: Study was carefully performed using standard instrumentation according to an ASTM method. However, the OECD method specifies somewhat different procedures than the ASTM method, and it was not conducted in accord with GLP guidelines.

Data source

Reference

Reference Type:

study report

Title:

Unnamed

Year:

2007

Report date:

2007

Materials and methods

Test guideline

Qualifier:

according to guideline

Guideline:

other: ASTM E1719-97 (Vapor Pressure Measurement by Ebulliometry) and ASTM D1120-94 (Standard Test Method for Boiling Point of Engine Coolants)

Deviations:

not specified

Principles of method if other than guideline:

The apparatus was a glassware reflux system. Pressure was measured and controlled using a JKEM Model 200 vacuum controller. The pressure transducer was calibrated on the day of measurement by comparison with full vacuum verified with a mercury McLeod gauge, and a mercury barometer located in the same laboratory. Pot temperature was measured with an Extech RTD (resistance temperature detector).

GLP compliance:

no

Type of method:

dynamic method

Test material

Test material information

Constituent 1

Reference substance name:

DONA

IUPAC Name:

DONA

Details on test material:

- Name of test material (as cited in study report): PF-13 Acid
- Lot/batch no.: 144560-059-5

Results and discussion

Boiling point

Boiling pt.:

183.3 °C

Atm. press.:

760 mm Hg

Any other information on results incl. tables

The temperatures measured were that of the pot temperature, rather than distillate, as per ASTM E1719-97 (Vapor Pressure Measurement by Ebulliometry). Figure 1. (Vapor Pressure 1) --> SEE ATTACHMENT 1

The data are fit by the Antoine equation:

ln(Pvap) = A / (T + C) + B

Figure 2. (Vapor Pressure 2) (ln(Pvap) vs 1/(T+C)) --> SEE ATTACHMENT 2

Pvap (mm Hg) = exp(-6619.26267/(T °C + 273.15) + 21.134863) R² = 0.994989

Based on this equation, the boiling point (at 760 mm Hg) obtained from this equation is: 183.3 °C (361.9 °F).

Applicant's summary and conclusion

Conclusions:

The extrapolated boiling point of DONA was determined to be 183.3 °C (361.9 °F) at 760 mm Hg

Executive summary:

The boiling point of DONA was extrapolated from the measured vapor pressures and temperatures for the compound. Measurements were made according to methods ASTM E1719-97 and ASTM D1120-94. Vapor pressure and temperature were measured at a variety of equilibrium points covering a temperature range of ca. 60 °C to ca. 180 °C and fit to the Antoine equation ln(VP) = A/(T+C)+B, where T is the pot temperature in °C. The linear regression equation was VP = exp(-6619.26267/(T °C + 273.15) + 21.134863). The R-sq = 0.994989. The extrapolated boiling point of DONA at 760 mm Hg was determined to be 183.3 °C (361.9 °F). The study was conducted under method ASTM E1719-97 and ASTM D1120-94. ASTM D1120 is cited in OECD TG 103, however the OECD method specifies somewhat different procedures. The dynamic method is approved for this endpoint per OECD TG 103§12. The study was not conducted in accord with GLP guidelines. Therefore, the study is classified as reliable with restrictions.