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Administrative data

Endpoint:
boiling point
Type of information:
experimental study
Adequacy of study:
key study
Study period:
2006-03-07 to 2006-03-14
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
other: Study conducted in compliance with no or minor deviations from standard test guidelines and/or minor methodological deficiencies, which do not affect the quality of the relevant results. The study report was conclusive and done to a valid guideline.
Cross-referenceopen allclose all
Reason / purpose for cross-reference:
reference to same study
Reason / purpose for cross-reference:
reference to other study

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
2006
Report date:
2006

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
GLP compliance:
yes (incl. QA statement)
Type of method:
differential scanning calorimetry

Test material

Constituent 1
Chemical structure
Reference substance name:
Ethyl (3aR,7R,7aR)-2,2-dimethyl-7-[(methylsulfonyl)oxy]-3a,6,7,7a-tetrahydro-1,3-benzodioxole-5-carboxylate
EC Number:
606-548-2
Cas Number:
204254-84-2
Molecular formula:
C13 H20 O7 S
IUPAC Name:
Ethyl (3aR,7R,7aR)-2,2-dimethyl-7-[(methylsulfonyl)oxy]-3a,6,7,7a-tetrahydro-1,3-benzodioxole-5-carboxylate
Test material form:
other: solid
Details on test material:
White to beige solid.
Purity 99.2%
Expiry date: 21 December 2006

Results and discussion

Boiling point
Atm. press.:
1 atm
Decomposition:
yes
Decomp. temp.:
212.8 °C
Remarks on result:
other: Decomposition occurred before boiling

Any other information on results incl. tables

DSC run was performed in the temperature range between 25°C and 400°C. The endothermic reaction at 101.7°C (melting point) was followed by an exothermic reaction at 212.8°C. This exothermic reaction was due to the decomposition of the test item. After the experiment the test item was molten, black and carbonized.

Applicant's summary and conclusion

Conclusions:
The test item decomposed before boiling.
Executive summary:

The test item was analysed by Differential Scanning Calorimetry between 25°C and 400°C. The endothermic reaction at 101.7°C (melting point) was followed by an exothermic reaction at 212.8°C. This exothermic reaction was due to the decomposition of the test item.

Conclusion: No boiling point could be determined as decomposition of the test item was observed before boiling occurred.