1,1'-methylenebis(4-isocyanatobenzene) and its oligomeric reaction products with butane-1,3-diol, 2,2'-oxydiethanol and propane-1,2-diol

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:

16/06/2009 – 18/06/2009

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

Type of method:

method to determine freezing temperature

Melting / freezing pt.:

-5.1 °C

Remarks on result:

other: Run 1: initial freezing temperature (°C)

Melting / freezing pt.:

-4.7 °C

Remarks on result:

other: Run 2: initial freezing temperature (°C)

Melting / freezing pt.:

-16.9 °C

Remarks on result:

other: Run 1: final freezing temperature (°C)

Melting / freezing pt.:

-17.1 °C

Remarks on result:

other: Run 2: final freezing temperature (°C)

Sample becomes very viscous at lower temperatures and forms a waxy substance at the final freezing temperature.

Conclusions:

Result : -4.7 to -17.1°C
Sample becomes very viscous at lower temperatures and forms a waxy substance at the final freezing temperature.

Description of key information

The melting range of MDI/1,3-BD/DEG/PG is -17.1 to -4.7 ˚C.

Key value for chemical safety assessment

Melting / freezing point at 101 325 Pa:

-17 °C