Registration Dossier

Data platform availability banner - registered substances factsheets

Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.

The new ECHA CHEM database has been released by ECHA, and it now contains all REACH registration data. There are more details on the transition of ECHA's published data to ECHA CHEM here.

Diss Factsheets

Physical & Chemical properties

Melting point / freezing point

Currently viewing:

Administrative data

Link to relevant study record(s)

Referenceopen allclose all

Endpoint:
melting point/freezing point
Type of information:
experimental study
Adequacy of study:
key study
Study period:
08/12/2008 - 08/04/2009
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
other: GLP compliant, guideline study, experimental study. No restrictions, fully adequate for assessment
Qualifier:
according to guideline
Guideline:
OECD Guideline 102 (Melting point / Melting Range)
Deviations:
no
GLP compliance:
yes
Type of method:
other: differential scanning calorimetry
Melting / freezing pt.:
> -140 - < -70 °C
Atm. press.:
1 013 hPa
Decomposition:
no
Sublimation:
no
Conclusions:
The substance shows two melting signals between -140 °C and -70 °C, with a main peak at approximately -83 °C.
Executive summary:

This study is GLP compliant and follows a standard guideline, therefore the data is classed as reliable. The substance shows two melting signals between -140 °C and -70 °C, with a main peak at approximately -83 °C.

Endpoint:
melting point/freezing point
Type of information:
experimental study
Adequacy of study:
key study
Study period:
06/06/2007 - 16/10/2007
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
other: GLP compliant, guideline study, available as unpublished report, no restrictions fully adequate for assessment
Qualifier:
according to guideline
Guideline:
EU Method A.1 (Melting / Freezing Temperature)
Deviations:
no
Qualifier:
according to guideline
Guideline:
OECD Guideline 102 (Melting point / Melting Range)
Deviations:
no
GLP compliance:
yes
Type of method:
other: Differential scanning calorimetry
Melting / freezing pt.:
< -100 °C
Atm. press.:
1 013 hPa
Decomposition:
no
Sublimation:
no

In the first heating two small endothermic peaks at about -135 and -100 indicates the melting of secondary constituents. In the second heating a glass transition was found to be at -111°C. An endothermic peak starting at about 48°C with the registered loss in mass shows the vapourisation of the test item. In order to survey the thermic behaviour of the test item the dermination was run up to 200°C. Exothermic decomposition was not observed.

Conclusions:
The melting point of 68476-55-1 is below -100°C.
Executive summary:

This study was conducted to a standard guideline and according to GLP and so is considered fully reliable for use as a key study. The melting point of 68476-55-1 is below -100°C.

Endpoint:
melting point/freezing point
Type of information:
experimental study
Adequacy of study:
key study
Study period:
23/10/2007 - 04/03/2008
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
other: GLP compliant,guideline study, available as unpublished report, no restrictions fully adequate for assessment
Qualifier:
according to guideline
Guideline:
OECD Guideline 102 (Melting point / Melting Range)
Deviations:
no
GLP compliance:
yes
Type of method:
other: Differential scanning calorimetry
Melting / freezing pt.:
< -50 °C
Atm. press.:
1 013 hPa
Decomposition:
no
Sublimation:
no

No melting temperature was found between -50 and 400°C. An endothermic peak starting at about -105°C shows the melting of the constituents of the test item. An endothermic peak starting at about -75°C (onset) was observed. In combination with the recorded loss of mass this shows the vapourisation of the test item. Exothermic decomposition was not observed from -100 to 400°C.

Conclusions:
The melting point of 92128-65-9 is below -50°C.
Executive summary:

This study was conducted to a standard guideline and according to GLP and so is considered fully reliable for use as a key study. The melting point of 92128-65-9 is below -50°C.

Description of key information

The melting point of streams in this category is less than -50°C, with a mean value of -78ºC.

Key value for chemical safety assessment

Melting / freezing point at 101 325 Pa:
-78 °C

Additional information

Data from GKA Competence Centre Analytics (2008, 2008 and 2009) are available for three of the streams in this category (64742-49-0: -83°C, 92128 -65 -9: <-50°C, 68476 -55 -1: <-100°C).


 


These data will be read across to all category members. The mean of the melting point values for the category is -78°C and this has been used to complete the 'key value for chemical safety assessment'.