Undec-10-enoic acid

Melting point / freezing point

Link to relevant study record(s)

Reference

Endpoint:

melting point/freezing point

Type of information:

experimental study

Adequacy of study:

key study

Study period:

2008-06-30 till 2009-03-13

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

guideline study

Reason / purpose for cross-reference:

reference to same study

Qualifier:

according to guideline

Guideline:

OECD Guideline 102 (Melting point / Melting Range)

Deviations:

no

GLP compliance:

yes (incl. QA statement)

Type of method:

thermal analysis

Key result

Melting / freezing pt.:

>= 21.2 - <= 26.4 °C

Atm. press.:

ca. 1 atm

Decomposition:

no

	Melting point (first peak)
Determination	To Onset temperature	Tei   Initial extrapolated temperature   First melting with thermal past	Tp   Peak temperature   First melting with termal past
1 2 3	+8.4°C +8.2°C +9.7°C	+21.4°C +21.1°C +21.0°C	+27.0°C +26.4°C +25.9°C
Mean Standard Deviation	+8.8°C 0.8°C	+21.2°C 0.3°C	+26.4°C 0.6°C

The result given represents the mean value of three independant runs. The standard deviation was 0.3°C for the lower limit of the melting point temperature range, and 0.6°C for the upper limit of the melting point temperature range.

As temperatures Tei and Tp differs from more than 0.5°C, they are both reported in the results.

Melting range:

Initial extrapolated temperature: Tei = +21.2°C

Peak temperature: Tp = +26.4°C

Conclusions:

The melting raneg for the test item 10-undecenoic acid was determined to be : 21.2-26.4 °C.

Executive summary:

The melting point was determined for the test item 10 -undecenoic acid according to a OECD Guideline 102 study, under GLP. The thermal analysis method was applied, using Differential Scanning Calorimetry (DSC). The initial extrapolated temperature is 21.2°C and the peak temperature is 26.4 °C thus the melting range of the substance is : 21.2 -26.4°C.

Description of key information

The melting range was determined to be 21.2-26.4 °C at normal atmospheric pressure.

Key value for chemical safety assessment

Melting / freezing point at 101 325 Pa:

26.4 °C

Additional information

A OECD Guideline 102 study without deviations and under GLP is available. The thermal analysis method was applied, using Differential Scanning Calorimetry (DSC). The melting range was determined to be : 21.2-26.4°C. Key value for chemical safety assessment: 26.4°C (peak temperature).