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Administrative data

Endpoint:
vapour pressure
Type of information:
other: Literature
Adequacy of study:
key study
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
other: see 'Remark'
Remarks:
As referenced in REACH Guidance Document 7a pg 28, “The use of Klimisch codes (Klimisch et al., 1997), can be extended to these secondary sources and a reliability code of (2) valid with restrictions should be assigned when using an authoritative secondary source.”

Data source

Reference
Reference Type:
review article or handbook
Title:
Viscosity and molecular association, Part VII. Association of alkyl orthotitanates
Author:
Thomas, L.H., Davies, G.H.
Year:
1969
Bibliographic source:
J. Chem. Soc., (A): 1271-1274

Materials and methods

Principles of method if other than guideline:
Vapor pressure was determined by the method of Thomas, Smith, and Meatyard, and precautions were taken to avoid access of moisture. Readings at about 4° intervals were taken, and smoothed values were read off a large-scale plot of log p vs. t (°C). The apparatus was checked for leaks and evacuated to a pressure of about 0.004 Torr, after which dry air was admitted to room pressure. Ten mL of the test material was introduced into the boiler to give a depth of 15 mm, care being taken to avoid contamination by moist atmospheric air. The glass-fibre skirt was tied in position above, and at the bottom, of the bulb of the thermometer so as to ensure adequate contact, and extended to the bottom of the boiler. An A-shape vent was cut into the skirt below the bulb of the thermometer to allow free escape of vapour and to prevent capillary rise of liquid. The heating bath was heated to a temperature near the boiling point to be measured, and on pumping down, liquid soon refluxed from the cooling coil and rapid outgassing occurred without bumping of the liquid pool. After equilibration, the pressure was taken, and the temperature of the heating bath slowly raised until it was 30-40°C above the temperature recorded on the thermometer. The latter remained perfectly constant independent of bath temperature (and thus of vapour velocity) and was taken as the boiling point. The temperature of the bath is then appropriately reduced, the pressure increased, and the above procedure repeated and so on to cover the whole range of measurements.
GLP compliance:
not specified
Type of method:
other: Thomas, L.H., Smith, H. and Meatyard, R., J. Phys. (E), 1968, 1, 1119

Test material

Constituent 1
Chemical structure
Reference substance name:
Titanium tetraisopropanolate
EC Number:
208-909-6
EC Name:
Titanium tetraisopropanolate
Cas Number:
546-68-9
Molecular formula:
C12H28O4Ti
IUPAC Name:
titanium tetraisopropanolate

Results and discussion

Vapour pressure
Temp.:
63.2 °C
Vapour pressure:
1.33 hPa

Applicant's summary and conclusion