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Diss Factsheets

Administrative data

Endpoint:
melting point/freezing point
Type of information:
experimental study
Adequacy of study:
key study
Study period:
Experimental work 6/8/2020; Report 7/8/2020
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
guideline study without detailed documentation

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
2020
Report date:
2020

Materials and methods

Test guideline
Qualifier:
equivalent or similar to guideline
Guideline:
OECD Guideline 102 (Melting point / Melting Range)
Deviations:
no
GLP compliance:
no
Type of method:
differential scanning calorimetry

Test material

Constituent 1
Chemical structure
Reference substance name:
sodium 3-[(3,4-dicyanophenyl)thio]propane-1-sulfonate
EC Number:
842-798-0
Cas Number:
444996-79-6
Molecular formula:
C11H9N2NaO3S2
IUPAC Name:
sodium 3-[(3,4-dicyanophenyl)thio]propane-1-sulfonate
impurity 1
Chemical structure
Reference substance name:
Water
EC Number:
231-791-2
EC Name:
Water
Cas Number:
7732-18-5
Molecular formula:
H2O
IUPAC Name:
Water
Test material form:
other: Paste

Results and discussion

Melting / freezing point
Key result
Melting / freezing pt.:
>= 260 - <= 270 °C
Atm. press.:
> 100 - < 101 kPa
Decomposition:
no
Sublimation:
no

Applicant's summary and conclusion

Conclusions:
The melting point was determined to be 260-270ºC, with an apparent phase change taking place a few degrees before melting at 269ºC
Executive summary:

The study was undertaken to determine the melting point of the test material using DSC.

The main melting endotherm was seen at 269.4ºC, but in advance of this an endotherm was seen commencing at 260ºC, which is consistent with a phase chnage. The melting point is given by the range 260 -270ºC