Propanoic acid, 2-hydroxy-, 2-ethylhexyl ester, (2S)-

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:

2010

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

other: GLP study

Qualifier:

according to guideline

Guideline:

OECD Guideline 102 (Melting point / Melting Range)

Deviations:

no

Qualifier:

according to guideline

Guideline:

EU Method A.1 (Melting / Freezing Temperature)

Deviations:

no

GLP compliance:

yes (incl. QA statement)

Type of method:

other: differential scanning calorimetry

Melting / freezing pt.:

< -20 °C

The DSC-curve obtained with the first experiment is shown in Figure 4 (attached illustration). During cooling as well as during heating, no effects were observed which were caused by crystallisation and/or melting.

During the second experiment, an internally scratched smaple pan was used in order to facilitate crystalisation. Essentially the same results as during the first experiment were obtained.

Additionally, the test substance was stored overnight in a -20°C freezer in order to determine if crystallization occurs. After storage the test substance had not been crystalized. From this it will be concluded that the melting temperature is < -20°C.

Conclusions:

The melting temperature of 2-ethylhexyl-S-lactate is < -20°C.

Executive summary:

The melting temperature of PURASOLV®EHL (2-ethylhexyl-S-lactate) was determined using DSC. The melting temperature of the test substance is -20°C.

Description of key information

At -20 °C ethylhexyl lactate is still liquid. The melting point is therefore given as -20 °C.

Key value for chemical safety assessment

Melting / freezing point at 101 325 Pa:

-20 °C