Registration Dossier

Administrative data

relative self-ignition temperature (solids)
Data waiving:
study scientifically not necessary / other information available
Justification for data waiving:
Justification for type of information:
The material has been heated in air to attempt melting point assessment and instead it appears to decompose. There was no evidence of violent exotherm or combustion.
Inorganic salts are not typicallly considered likely to auto-ignite on heating.
Reason / purpose for cross-reference:
data waiving: supporting information
melting point/freezing point
Type of information:
experimental study
Adequacy of study:
key study
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
test procedure in accordance with generally accepted scientific standards and described in sufficient detail
Justification for type of information:
Using recognised methods described incompany report. This also corrolates with published data suggesting no melting point < 300 C
equivalent or similar to guideline
EU Method A.1 (Melting / Freezing Temperature)
Principles of method if other than guideline:
Melting point estimate was carried out using a Maplelab Scientific Melting Point Device MPD02 up to 300 C
GLP compliance:
Type of method:
capillary method
Specific details on test material used for the study:
Batch number of test material: C-04-3584
Key result
Melting / freezing pt.:
> 100 °C
Atm. press.:
ca. 1 atm
Above 100 C
Decomp. temp.:
> 100

Substance does not melt .The substance decomposes > 100 C.

The MPD02 equipment could only go up to 300 C and at this temperature no physical or colouration changes were observed in the crystalline sample placed in the glass capillary tube.

A 1 g sample was heated in a carbolite furnace to 900 C after which it has changed to a dark ash, therefore decomposition had occurred.

Results: Substance does not melt .The substance decomposes >300 °C.

During normal use and handling, and certainly under biological and environmental conditions, the substance will remain solid.

Data source

Materials and methods

Results and discussion

Applicant's summary and conclusion