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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Reference
Endpoint:
melting point/freezing point
Type of information:
experimental study
Adequacy of study:
key study
Study period:
02 June 2016 - 16 June 2016
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Qualifier:
according to guideline
Guideline:
OECD Guideline 102 (Melting point / Melting Range)
Version / remarks:
27 July 1995
Deviations:
no
Qualifier:
according to guideline
Guideline:
EU Method A.1 (Melting / Freezing Temperature)
Deviations:
no
Qualifier:
according to guideline
Guideline:
EPA OPPTS 830.7200 (Melting Point / Melting Range)
Version / remarks:
1998
Deviations:
no
GLP compliance:
yes (incl. QA statement)
Type of method:
differential scanning calorimetry
Key result
Melting / freezing pt.:
> 2.6 - < 3.7 °C
Atm. press.:
> 1 006 - < 1 008 hPa
Decomposition:
yes
Remarks:
Decomposition energy of -270 J/g
Decomp. temp.:
> 380 - < 470 °C

During the cooling phase an exothermic effect could be observed in the temperature range of approximately -10 to -30 °C, which can be assigned to the freezing of the test item. In the subsequent heating phase an endothermic effect was detected inthe temperature range of -10 to 20 °C, which can be assigned to the melting of the test item. As the onset temperatures in both tests deviate by more than 0.5 K from their mean value of 3.12 °C, the test item has a melting range of 2.6 to 3.7 °C.

Due to the low energy of the melting peak, the melting of the test item was verified. A small amount of the test item in a test tube was cooled down to -24.5 °C in a freezer. At this temperature the test item was solid. For warming up, the frozen sample was placed in a refrigerator at 3.5 °C. After eight hours the sample was still frozen. After 10 minutes at room temperature the test item was liquefied. Therefore the melting point in the DSC-measurement was confirmed.

No.

Sample weight / mg

Onset of Effect / °C

Range of effect / °C

Weight loss / mg

Atmospheric pressure / hPa

Remark

PN11224

14.49

3.65
303.09

-10 – 20 (endo)
120 – 320 (endo)

14.49

1007.9

Figure 1

PN11234

16.70

2.59
302.18

0 – 20 (endo)
120 – 320 (endo)

16.58

1005.9

Figure 2

Conclusions:
The test Item reaction mass of N-butylphthalimide and N-sec-phthalimide and N-propylphthalimide has a melting range of 2.6 to 3.7 °C at atmospheric pressure (1006 or 1008 hPa, respectively ) as determined by differential scanning calorimetry according to Regulation EC No. 440/2008 Method A.1. and OECD Test Guideline 102 (1995).
Executive summary:

The test item reaction mass of N-butylphthalimide and N-sec-phthalimide and N-propylphthalimide has a melting range of 2.6 to 3.7 °C at atmospheric pressure (1006 or 1008 hPa, respectively) as determined by differential scanning calorimetry according to Regulation EC No. 440/2008 Method A.1. and OECD Test Guideline 102 (1995).

Description of key information

The test item has a melting range of 2.6 to 3.7 °C at atmospheric pressure (1006 or 1008 hPa, respectively) as determined by differential scanning calorimetry according to Regulation EC No. 440/2008 Method A.1. and OECD Test Guideline 102 (1995).

Key value for chemical safety assessment

Additional information

Melting point range of 2.6 to 3.7 °C.