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Physical & Chemical properties

Stability: thermal, sunlight, metals

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Administrative data

Endpoint:
stability: thermal, sunlight, metals, other
Type of information:
experimental study
Adequacy of study:
weight of evidence
Reliability:
4 (not assignable)
Rationale for reliability incl. deficiencies:
other: The test method is commonly used in other than REACH Regulation context for the thermal stability characterization and it can be considered as scientifically acceptable. Nevertheless, only the test sheet is available.

Data source

Reference
Reference Type:
other company data
Title:
Unnamed
Year:
2008
Report date:
2008

Materials and methods

Principles of method if other than guideline:
The air dependence of the thermal decomposition was determined using the RADEX test dynamically with air flush.
GLP compliance:
not specified

Test material

Constituent 1
Reference substance name:
Direct Blue 199 Na
IUPAC Name:
Direct Blue 199 Na

Results and discussion

For thermal stability study

Operating temperatureopen allclose all
Operating temp.:
255 °C
Remarks on result:
other: Start of exothermic reaction under open air and air-flow conditions
Operating temp.:
245 °C
Remarks on result:
other: Start of exothermic reaction under closed air conditions
Operating temp.:
> 350 °C
Remarks on result:
other: Start of exothermic reaction under Argon flow conditions

Any other information on results incl. tables

Decomposition energy under open air conditions > 240 J/g

Decomposition energy under closed air conditions > 230 J/g

Spontaneous exothermic reaction: none

Exothermic reaction air independent: yes; in air flow condition stronger than without active O2-supply

Start of endothermic reaction: 70 °C; evaporation of H2O solvent

Sample after the experiment: not evaluated

Applicant's summary and conclusion

Conclusions:
The test substance decomposes at 255 °C, under air conditions. The exothermic reaction was judjed as air-independent and in air-flow conditions it resulted stronger than without active O2-supply. Start of endothermic reaction was recorded at 70 °C, observing the evaporation of H2O solvent.
Executive summary:

The air dependence of the thermal decomposition was determined using the RADEX test dynamically with air flush.

The start of exothermic reaction under open air conditions was recorded 255 °C (decomposition energy greater than 24 J/g), while under closed air conditions the start of exothermic reaction was recorded at 240 °C (decomposition evergy grater than 230 J/g). The exothermic reaction was judjed as air-independent and in air-flow conditions it resulted stronger than without active O2-supply. Start of endothermic reaction was recorded at 70 °C, observing the evaporation of H2O solvent.

Conclusion

The test substance decomposes at 255 °C, under air conditions. The exothermic reaction was judjed as air-independent and in air-flow conditions it resulted stronger than without active O2-supply. Start of endothermic reaction was recorded at 70 °C, observing the evaporation of H2O solvent.

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