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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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:
from 2018-05-03 to 2018-05-23
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)
Version / remarks:
31 March 2008
Deviations:
no
Qualifier:
according to guideline
Guideline:
EPA OPPTS 830.7200 (Melting Point / Melting Range)
Version / remarks:
March 1998
Deviations:
no
GLP compliance:
yes (incl. QA statement)
Type of method:
capillary method
Specific details on test material used for the study:
SOURCE OF TEST MATERIAL
- Batch No.of test material: Lab NP_20171034-003
- Expiration date of the lot/batch: 2022-08-18

STABILITY AND STORAGE CONDITIONS OF TEST MATERIAL
- Storage condition of test material: closed vessel at room temperature (20 ± 5 °C).

OTHER SPECIFICS:
white solid
Key result
Melting / freezing pt.:
ca. 197.7 °C
Atm. press.:
1 013 hPa
Decomposition:
no
Sublimation:
no

During the preliminary test using a linear heating rate of 10 °C/min the phase transition of test item was observed at 206 °C.

In the main test using a linear heating rate of 0.5 °C/min the melting point of the test item was determined to be 197.7 °C (470.8 K).

Table 1. Measured temperatures corresponding to the melting point of Test Item (two experiments (I, II) with three parallel samples each (1, 2, 3))

Sample

Temperature (°C)

Mean (°C)

Standard Deviation

Confidence interval (95 %)

I /1

197.1

197.7

1.87

1.97

I /2

198.0

I /3

199.7

II /1

194.3

II /2

198.9

II /3

198.0

 

Conclusions:
Using a linear heating rate of 0.5 °C/min the melting point of the test item was determined to be 197.7 °C (470.8 K).
Executive summary:

A study was conducted according to OECD TG 102, Regulation (EC) No. 440/2008 method A.1 and EPA OPPTS 830.7200 to determine the melting point of the test item using the capillary method. In a preliminary test using a linear heating rate of 10 °C/min the phase transition of the test item was observed at 206 °C. For the main test, a small amount of test item was charged in capillary glass tubes and packed tightly to obtain a filling level of approximately 5 mm. Three capillaries were prepared. Heating was started from 190 °C with temperature rise of 0.5 °C/min. The melting point of the test item was determined to be 197.7 °C at 1013.25 hPa.

Description of key information

The melting point of the test item was determined to be 197.7 °C (470.8 K).

Key value for chemical safety assessment

Melting / freezing point at 101 325 Pa:
197.7 °C

Additional information

A study was conducted according to OECD TG 102, Regulation (EC) No. 440/2008 method A.1 and EPA OPPTS 830.7200 to determine the melting point of the test item using the capillary method. In a preliminary test using a linear heating rate of 10 °C/min the phase transition of the test item was observed at 206 °C. For the main test, a small amount of test item was charged in capillary glass tubes and packed tightly to obtain a filling level of approximately 5 mm. Three capillaries were prepared. Heating was started from 190 °C with temperature rise of 0.5 °C/min. The melting point of the test item was determined to be 197.7 °C at 1013.25 hPa.