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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Qualifier:
according to guideline
Guideline:
OECD Guideline 102 (Melting point / Melting Range)
Qualifier:
according to guideline
Guideline:
EU Method A.1 (Melting / Freezing Temperature)
Qualifier:
according to guideline
Guideline:
EPA OPPTS 830.7200 (Melting Point / Melting Range)
Qualifier:
according to guideline
Guideline:
other: CIPAC MT 1 (2009): Freezing Point
GLP compliance:
yes (incl. QA statement)
Other quality assurance:
other: SOP-LA-011
Remarks:
Melting Point by DSC
Type of method:
differential scanning calorimetry
Atm. press.:
1 004.3 hPa
Decomposition:
yes
Remarks:
No melting was detected of the test item up to its decomposition.
Decomp. temp.:
>= 200 °C
Remarks on result:
other: PN15834
Remarks:
The test item showed an exothermic effect: Onset of effect: ---. Range of effect 210 - 280 °C (exo).
Atm. press.:
1 003.6 hPa
Decomposition:
yes
Remarks:
No melting was detected of the test item up to its decomposition.
Decomp. temp.:
>= 200 °C
Remarks on result:
other: PN15839
Remarks:
The test item showed an exothermic effect: Onset of effect: ---. Range of effect 210 - 280°C (exo).

The thermograms of the DSC runs PN15834 and PN15839 are shown in Figure 2 and Figure 3, respectively. In the temperature range of 200 – 270 °C the test item showed an exothermic effect with a mean energy release of -140 J/g. The test item showed an endothermic effect in the temperature range of 460 – 490 °C.

Table 1:       Results of the DSC-measurements

 No.  Sample weight / mg  Onset of Effect / °C  Range of Effect / °C  Weight loss / mg  Atmospheric pressure / hPa  Remark
 PN15834  11.63

 ---

469.63

210 - 280 (exo)

460 - 480 (endo)

  5.94 1004.3   Figure 2
 PN15839  13.66

 ---

465.94

210 - 280 (exo)

290 - 490 (endo)

 8.35   1003.6  Figure 3

During the heating an exothermic effects was detected. No melting or boiling was detected of the test item.

Conclusions:
No melting point of the test item was observed up to its decomposition starting from 200°C.
Executive summary:

The melting point of the test item Hydrogen [4-[[4-diethylamino)phenyl][4-[ethyl[(3-sulphonatobenzyl)amino]-o-tolyl]methylene]-3-methylcylohexa-2,5-dien-1-ylidene](ethyl)3-sulphonatobenzyl)ammonium, sodium salt was investigated by differential scanning calorimetry method according to Regulation EC No. 440/2008 Method A.1., OECD Test Guideline 102 (1995), EPA OCSPP 830.7200 (1998) and CIPAC MT 1 (2009). No melting point up to its decomposition starting at a temperature of approx. 200 °C was determined.

Description of key information

The melting point of the test item was investigated by differential scanning calorimetry method according to Regulation EC No. 440/2008 Method A.1.and OECD Test Guideline 102 (1995). No melting point up to its decomposition starting at a temperature of approx. 200 °C was determined.

Key value for chemical safety assessment

Melting / freezing point at 101 325 Pa:
200 °C

Additional information

"Should read: > 200 °C"