Registration Dossier

Data platform availability banner - registered substances factsheets

Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.

The new ECHA CHEM database has been released by ECHA, and it now contains all REACH registration data. There are more details on the transition of ECHA's published data to ECHA CHEM here.

Diss Factsheets

Administrative data

Endpoint:
melting point/freezing point
Type of information:
experimental study
Adequacy of study:
other information
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
other: GLP-study

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
1994

Materials and methods

Test guideline
Qualifier:
according to guideline
Guideline:
EU Method A.1 (Melting / Freezing Temperature)
GLP compliance:
yes
Type of method:
thermal analysis

Test material

Constituent 1
Chemical structure
Reference substance name:
2H,3H-thieno[3,4-b][1,4]dioxine-5,7-dicarboxylic acid
EC Number:
605-999-2
Cas Number:
18361-03-0
Molecular formula:
C8H6O6S
IUPAC Name:
2H,3H-thieno[3,4-b][1,4]dioxine-5,7-dicarboxylic acid

Results and discussion

Melting / freezing point
Decomposition:
yes
Decomp. temp.:
250 °C
Remarks on result:
other: Determination of the melting point not possible; substance decomposes before melting (begin: 250 °C); DSC-curve shows an endothermic peak at 281 °C

Applicant's summary and conclusion

Conclusions:
Determination of the melting point not possible; substance decomposes before melting (begin: 250 °C); DSC-curve shows an endothermic peak at 281 °C