Registration Dossier

Administrative data

Endpoint:
boiling point
Type of information:
experimental study
Adequacy of study:
key study
Study period:
15 May 2013 to 17 March 2014
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
other: Conducted according to current test guidelines and GLP compliant

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
2014
Report Date:
2014

Materials and methods

Test guidelineopen allclose all
Qualifier:
according to
Guideline:
OECD Guideline 103 (Boiling point/boiling range)
Deviations:
no
Qualifier:
according to
Guideline:
EU Method A.2 (Boiling Temperature)
Deviations:
no
GLP compliance:
yes
Type of method:
differential scanning calorimetry

Test material

Reference
Name:
Unnamed
Type:
Constituent
Type:
Constituent
Test material form:
solid: particulate/powder
Remarks:
migrated information: powder
Details on test material:
Name: Oxypyrion acetate
CAS Number: 1742-78-6
Batch number: 14058400
Purity: 97.83%
Date of arrival: 22 April 2013
Expiry date: 30 November 2013
Storage conditions: Refrigerated (2 to 8°C)

Results and discussion

Boiling point
Key result
Boiling pt.:
> 303 °C
Decomposition:
yes
Decomp. temp.:
>= 188 - <= 303
Remarks on result:
other: Test idem decomposes

Any other information on results incl. tables

The DSC was checked with an indium standard and gave a melting onset at 156,59 °C with a normalised energy of -28,48 Jg-1. This was within the specification of 156,3 to 156,9 °C and -27,45 to -29,45 Jg-1, the instrument was therefore considered to be fit for purpose.

 

An endotherm equating to a melting temperature, and exotherm equating to decomposition were recorded. The melting endotherm was well defined so the onset and peak temperatures are appropriate. The decomposition was over a large temperature range so the left and right limits were recorded.

Sample 1:      Melting temperature, onset 96,02 °C, peak temperature 97,78 °C.
                       Decomposition: 189,48 to 298,25 °C.

Sample 2:      Melting temperature, onset 95,99 °C, peak temperature 99,11 °C.
                       Decomposition: 186,61 to 307,38 °C.

Mean melting temperature onset: 96°C.

Mean decomposition temperature range: 188°C to 303°C.

The atmospheric pressure at the time of testing was measured as 98.4986 kPa.

Applicant's summary and conclusion

Conclusions:
An endotherm equating to a melting temperature, and exotherm equating to decomposition were recorded. The melting endotherm was well defined so the onset and peak temperatures are appropriate. The decomposition was over a large temperature range so the left and right limits were recorded.
The mean melthing temperature onset for Oxypyrionacetate was 96°C.
The mean decomposition temperature range was 188°C to 303°C.