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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:
November 30, 2009 - March 15, 2010
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
other: Study was performed in accordance with the OECD Guideline 102, and EU Method A.1.

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
2010
Report date:
2010

Materials and methods

Test guidelineopen allclose all
Qualifier:
according to guideline
Guideline:
OECD Guideline 102 (Melting point / Melting Range)
Deviations:
no
Qualifier:
according to guideline
Guideline:
EU Method A.1 (Melting / Freezing Temperature)
Deviations:
no
Principles of method if other than guideline:
Not applicable
GLP compliance:
no
Remarks:
not required by the authority
Type of method:
capillary method
Remarks:
Differential Scanning Calorimetry (DSC)

Test material

Constituent 1
Chemical structure
Reference substance name:
Nitrosylsulphuric acid
EC Number:
231-964-2
EC Name:
Nitrosylsulphuric acid
Cas Number:
7782-78-7
Molecular formula:
HNO5S
IUPAC Name:
hydroxy(nitrosooxy)sulfane dioxide
Test material form:
other: liquid
Details on test material:
Identity: Confirmed by density
Storage: RT, dry
Expiry Date: November 20, 2011

Results and discussion

Melting / freezing point
Melting / freezing pt.:
-79 °C

Any other information on results incl. tables

Both measurements in aluminium crucibles with a hole showed an endothermic effect (melting) in the temperature range -82 to -65 °C with an onset temperature of -78.8 °C. The onset temperature is derived from the intersection of the tangent line with the highest slope of the endothermic peak with the baseline.

ldent-No.        Onset / °C        Temperature range / °C        Crucible

29999               -79.24               -82 to -65 °C                      Aluminium with a hole

30041               -78.43               -80 to -68 °C                      Aluminium with a hole

Applicant's summary and conclusion

Conclusions:
The test item had a mean melting point of -78.8 °C.
Executive summary:

The study was performed in accordance with the OECD Guideline 102, and EU Method A.1 in year 2009/2010.

The test item LZ5593 had a melting point of -79 °C using the Differential Scanning Calorimetry (DSC) method.