1,3-Butanediol, reaction products with 1,1'-methylenebis[4-isocyanatobenzene], propylene glycol and tripropylene glycol

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:

Start date of the experimental work: 22 August 2014 and Completion date of the experimental work: 09 October 2014.

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

guideline study

Qualifier:

according to guideline

Guideline:

EU Method A.1 (Melting / Freezing Temperature)

Deviations:

no

GLP compliance:

yes (incl. QA statement)

Type of method:

method to determine freezing temperature

Melting / freezing pt.:

< -15 °C

Decomposition:

no

Test results:

Test D

The test was conducted in an open aluminium crucible. The sample was observed to undergo an endothermic event -18.3 deg C (start of freezing) which continued for the duration of the test. On completion of the testing a cloudy white, viscous liquid remained.

Test E

The test was conducted in an open aluminium crucible. The sample was observed to undergo an endothermic event -15.3 deg C (start of freezing) which continued for the duration of the test. On completion of the testing a cloudy white, viscous liquid remained.

The freezing end point was beyond the limits of the equipment.

Result : < -15 deg C

Conclusions:

Freezing point was determined to be -15°C.

Description of key information

Freezing : <-15°C

Key value for chemical safety assessment

Melting / freezing point at 101 325 Pa:

-15 °C