Reaction mass of 1-Hydroxyoctane, 2-methanoate and 1,2-Dihydroxyoctane, dimethanoate and 2-Hydroxyoctane 1-methanoate and 1,2-Dihydroxyoctane

Boiling point

Link to relevant study record(s)

Reference

Endpoint:

boiling point

Type of information:

experimental study

Adequacy of study:

key study

Study period:

24 Mar 2016 to 20 Jun 2016

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

guideline study

Qualifier:

according to guideline

Guideline:

EU Method A.2 (Boiling Temperature)

Qualifier:

according to guideline

Guideline:

OECD Guideline 103 (Boiling point/boiling range)

Qualifier:

according to guideline

Guideline:

EPA OPPTS 830.7220 (Boiling Point / Boiling Range)

GLP compliance:

no

Type of method:

differential scanning calorimetry

Key result

Boiling pt.:

>= 242 - <= 247 °C

Atm. press.:

1 013 hPa

Results

In the thermograms of the DSC runs PN10748 and PN10749 in the temperature range of -90 to -50 °C, an endothermic effect (melting) was observed. A second small and broad endothermic effect in the temperature range of -50 to 0 °C was observed. Between approx. 120 – 310 °C a third endothermic effect (boiling) could be detected.

The test item showed a third endothermic signal in the temperature range of approx. 120 – 310 °C that can be assigned to the boiling of the test item. For the correction of the boiling temperature to standard pressure the test item was assigned to chemical group 4 (e.g. Methyl formate). A correction value φ = 5.55 was used for the temperature of 240 – 250 °C. The lowest measured onset temperature is corrected to the standard pressure to be 242.71 °C and the highest onset temperature to be 247.10 °C. As the corrected onset temperatures in both tests deviate by more than 0.5 K from their mean value of 244.91 °C, the test item has a boiling range of 242 – 247 °C. No further thermal effects were observed up to the maximum test temperature of 500 °C.

Table 1: Results of the DSC measurements

No.	Sample weight (mg)	Onset of effect (°C)	Range of effect (°C)	Weight loss (mg)	Atmospheric pressure (hPa)
PN10748	13.79	-88.22 242.94	-90 to -50 (endo) -50 to 0 (endo) 120 to 310 (endo)	13.74	1019
PN10749	19.00	-88.23 247.33	-90 to -50 (endo) -50 to 0 (endo) 120 to 300 (endo)	18.99	1019

 

Final Results

The test item has a boiling range of 242 – 247 °C corrected to normal atmospheric pressure (1013 hPa) as determined by differential scanning calorimetry according to Regulation EC No. 440/2008 Method A.2. and OECD Test Guideline 103 (1995).

Conclusions:

A boiling range of 242-247 °C (at 1013 hPa) was determined for the test item according to E.U. Method A.2.

Description of key information

Boiling range: 242 to 247 °C at 1013 hPa (EU Method A.2., differential scanning calorimetry)

Additional information

A boiling range of 242 to 247 °C (at 1013 hPa) was determined for the test substance according to E.U. Method A.2.