Aluminium triethanolate

Boiling point

Link to relevant study record(s)

Reference

Endpoint:

boiling point

Type of information:

experimental study

Adequacy of study:

key study

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

guideline study

Qualifier:

according to guideline

Guideline:

OECD Guideline 103 (Boiling Point)

Deviations:

no

Qualifier:

according to guideline

Guideline:

EU Method A.2 (Boiling Temperature)

Deviations:

no

GLP compliance:

yes (incl. QA statement)

Type of method:

other: DSC and capillary/metal block method

Decomposition:

yes

Decomp. temp.:

ca. 130 °C

Remarks on result:

not determinable

Thermal analysis: The test item thermally decomposes from approximately 130 °C producing the volatile decomposition product (ethanol).  The remaining decomposition product (considered to be aluminium hydroxide), further decomposes and boils from approximately 300°C leaving a white residue considered to be aluminium oxide.  

Capillary/metal block: Under a nitrogen atmosphere the test item appeared to partially melt from 145 °C, with partial boiling from 330 °C. Under an air atmosphere the test item appeared to start melting from 115 °C and was fully melted at 187 °C, with partial boiling from 290 °C.

Summay: Thermal analysis of the test item demonstrated that the test item thermally decomposes. The decomposition products, ethanol and aluminium hydroxide are thought to be produced.  On heating above the decomposition temperature, ethanol is released, evidenced by the nonreversible endotherm in the range of approximately 140 °C to 170 °C.  It is considered that the remaining decomposition product (aluminium hydroxide), further decomposes and boils from approximately 300 °C leaving a white residue of aluminium oxide.  

Using the capillary/metal block method in an air atmosphere, the decomposition is visually observed as complete liquefaction. Since the test item decomposes prior to melting, no melting point or boiling point can be determined.

Conclusions:

The test item was determined to thermally decompose, prior to melting, from approximately 130 °C. Since the test item decomposes prior to melting, no melting point or boiling point could be determined.

Description of key information

The test item was determined to thermally decompose, prior to melting, from approximately 130 °C. Since the test item decomposes prior to melting, no melting point or boiling point could be determined.