1,2-Cyclohexanedicarboxylic Acid, 1-(phenylmethyl) ester, ester with 2,2,4-trimethyl, 1,3-petanediol mono(2-methyl propanoate)

Vapour pressure

Link to relevant study record(s)

Reference

Endpoint:

vapour pressure

Type of information:

experimental study

Adequacy of study:

key study

Reliability:

2 (reliable with restrictions)

Rationale for reliability incl. deficiencies:

guideline study without detailed documentation

Qualifier:

equivalent or similar to guideline

Guideline:

OECD Guideline 104 (Vapour Pressure Curve)

Version / remarks:

Guideline not mentioned in internal email but data looks similiar to that expected by OECD 104 vapour pressure curve

Deviations:

not specified

Principles of method if other than guideline:

Conclusion: Vapor pressure of P1700 has been measured at reduced pressure. Using the Clausius-Clapeyron equation, the following have been extrapolated for P1700: vapor pressure at 25°C of 2.04 x 10-10 Torr, boiling point at 760 Torr of 379°C, and Heat of Vaporization of Hvap of 132,167 J/mol.

Notebook VSC1004-7
A 380.0 g of sample of P-1700 from Batch RP-1062 was placed in a 1-L flask and distilled under full vacuum of a mechanical pump (< 1mmHg, <240°C) until about 30 mL of liquid was condensed. The pressure was then adjusted and the material was distilled slowly under the corresponding pressure. The constant temperature was recorded as the boiling point under this pressure. There is no foaming (significant decomposition) at 312°C. Conditions at 1 mm Hg were not ideal. A pressure of 1 mm Hg is beyond the accuracy of the vacuum gauge. Data units were converted to utilize the gas constant R of 8.3144598 J K−1mol−1 in the The Clausius-Clapeyron equation, ln(𝑃)= −Δ𝐻𝑣𝑎𝑝𝑅(1𝑇)+𝐶. Hvap of 132,167 J/mol was found from the slope of the least squares fit of the ln[vp(Pa)] and 1/T(K) data. Using the Clausius-Clapeyron equation, the following have been extrapolated for P1700: vapor pressure at 25°C of 2.04 x 10-10 Torr and boiling point at 760 Torr of 379°C.

GLP compliance:

not specified

Type of method:

dynamic method

Key result

Test no.:

#1

Temp.:

247.7 °C

Vapour pressure:

1 mm Hg

Remarks on result:

other:

Remarks:

Boiling point recorded at different pressures

Key result

Test no.:

#2

Temp.:

252.4 °C

Vapour pressure:

2 mm Hg

Remarks on result:

other:

Remarks:

Boiling point recorded at different pressures

Key result

Test no.:

#3

Temp.:

257.9 °C

Vapour pressure:

3 mm Hg

Remarks on result:

other:

Remarks:

Boiling point recorded at different pressures

Key result

Test no.:

#4

Temp.:

262.9 °C

Vapour pressure:

4 mm Hg

Remarks on result:

other:

Remarks:

Boiling point recorded at different pressures

Key result

Test no.:

#5

Temp.:

267.5 °C

Vapour pressure:

5 mm Hg

Remarks on result:

other:

Remarks:

Boiling point recorded at different pressures

Key result

Test no.:

#6

Temp.:

273.4 °C

Vapour pressure:

7 mm Hg

Remarks on result:

other:

Remarks:

Boiling point recorded at different pressures

Key result

Test no.:

#7

Temp.:

281 °C

Vapour pressure:

10 mm Hg

Remarks on result:

other:

Remarks:

Boiling point recorded at different pressures

Key result

Test no.:

#8

Temp.:

295.8 °C

Vapour pressure:

20 mm Hg

Remarks on result:

other:

Remarks:

Boiling point recorded at different pressures

Key result

Test no.:

#9

Temp.:

304 °C

Vapour pressure:

30 mm Hg

Remarks on result:

other:

Remarks:

Boiling point recorded at different pressures

Key result

Test no.:

#10

Temp.:

312 °C

Vapour pressure:

50 mm Hg

Remarks on result:

other:

Remarks:

Boiling point recorded at different pressures

Key result

Transition / decomposition:

no

Remarks on result:

other: No decomposition up to 312.0 deg. C

Conclusions:

vapor pressure at 25°C of 2.04 x 10-10 Torr.

Executive summary:

The following have been extrapolated for P1700: vapor pressure at 25°C of 2.04 x 10-10 Torr, boiling point at 760 Torr of 379°C, and Heat of Vaporization of (Hvap) of 132,167 J/mol.

Description of key information

The vapour pressure of the test material Santicizer Platinum P1700 is 2.04 x 10-10 Torr (2.71977632e-8 Pa) at 25°C (298.15 °K).

Key value for chemical safety assessment

Vapour pressure:

0 Pa

at the temperature of:

25 °C