Registration Dossier
Registration Dossier
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EC number: 231-964-2 | CAS number: 7782-78-7
Boiling point
Administrative data
- Endpoint:
- boiling 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 103, and EU Method A.2.
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 2 010
- Report date:
- 2010
Materials and methods
Test guidelineopen allclose all
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 103 (Boiling point/boiling range)
- Deviations:
- no
- Qualifier:
- according to guideline
- Guideline:
- EU Method A.2 (Boiling Temperature)
- Deviations:
- no
- Principles of method if other than guideline:
- Not applicable
- GLP compliance:
- no
- Remarks:
- not required by the authority
- Type of method:
- differential scanning calorimetry
Test material
- 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
Constituent 1
Results and discussion
Boiling point
- Boiling pt.:
- 333 °C
- Atm. press.:
- 1 013.3 hPa
Any other information on results incl. tables
The measurement in an aluminium crucible with a hole showed an exothermal decomposition in the temperature range of 25 — 180 °C with an overall energy of 1914 J/g. These effects are supposed to result from a reaction of the test item with the aluminium, as a white film at the surface of the aluminium crucible was observed after the measurement. In the same measurement two endothermic effects in the temperature range of 260 — 305 °C and 305 — 370 °C were observed. To avoid a reaction with the aluminium crucible the two additional measurements in open glass crucibles were performed These measurements showed an endothermic effect in the temperature range 250 — 370 °C with an onset temperature of approximately 333 °C.
Ident-No. Onset / °C Temperature range / °C Crucible
30238 332.92 250 — 370 °C open glass crucible
30241 333.17 260 — 370 °C open glass crucible
Applicant's summary and conclusion
- Conclusions:
- The boiling point of the test item at atmospheric pressure (101 3.3 hPa) was 333.0 °C.
- Executive summary:
The study was performed in accordance with the OECD Guideline 103, and EU Method A.2 in year 2009/2010.
The test item LZ5593 had a boiling point at atmospheric pressure (101 3.3 hPa) of 333 °C using the differential scanning calorimetry.
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