Registration Dossier

Physical & Chemical properties

Stability in organic solvents and identity of relevant degradation products

Administrative data

Endpoint:
stability in organic solvents and identity of relevant degradation products
Type of information:
experimental study
Adequacy of study:
key study
Study period:
1993
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
other: Acceptable, well-documented publication/study report which meets basic scientific principles

Data source

Reference
Reference Type:
publication
Title:
Verfahren zur Reinigung von Indigo
Author:
Kohlhaupt, Reinhold; Bergmann, Udo
Year:
1993
Bibliographic source:
EP 0 575 925 A1

Materials and methods

Test guideline
Qualifier:
no guideline available
Principles of method if other than guideline:
The patent application gives a detailed description of the purification of indigo upon heating the indigo in hydrocarbons, halogenated hydrocarbons, ether, ketones, acid amides, nitriles, alcohols, esters or there mixutres at temperatures from 150-250 °C giving pure indigo, that means that indigo is absolutely stable at these temperatures.
GLP compliance:
not specified

Test material

Reference
Name:
Unnamed
Type:
Constituent
Test material form:
solid: particulate/powder
Remarks:
migrated information: powder

Results and discussion

Test substance stable:
yes
Transformation products:
not specified

Applicant's summary and conclusion

Conclusions:
stable in organic solvents up to at least 250°C