Butyl (S)-2-hydroxypropionate

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:

2016-12-14 to 2017-01-05

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

guideline study

Qualifier:

according to guideline

Guideline:

OECD Guideline 102 (Melting point / Melting Range)

Deviations:

no

GLP compliance:

no

Type of method:

differential scanning calorimetry

Key result

Melting / freezing pt.:

ca. -23 °C

Atm. press.:

1 atm

The melting point can be calculated from the onset or the peak maximum, whereby impure samples are characterised by their peak maximum. As can be seen in the DSC curves, the test item shows two peaks. The first peak indicates an impurity and the second peak the melting point of the main component of the test item. The peak maxima of the analysed sample are given in the following table and are approx. -30 °C for the first peak and approx. -23 °C for the second peak (mean values of three iterations).

Solidification occurs at approx. -39 °C.

Iteration	Peak	Onset [°C]	Peak maximum [°C]	Peak area [mJ]
1	1	-31.30	-29.95	18.9
	2	-25.88	-22.77	696
2	1	-31.35	-30.18	10.2
	2	-25.84	-22.77	693
3	1	-31.34	-30.08	9.5
	2	-25.89	-22.87	692

Conclusions:

The melting point of butyl-(S)-lactate is ca. -23 °C.

Executive summary:

The melting point of butyl-(S)-lactate was determinded according to OECD 102 and is ca. -23 °C.

Description of key information

The melting point of butyl-(S)-lactate was determined according to OECD 102 and is ca. -23 °C.

Key value for chemical safety assessment

Melting / freezing point at 101 325 Pa:

-23 °C