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Physical & Chemical properties

Boiling point

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Administrative data

Endpoint:
boiling point
Type of information:
experimental study
Adequacy of study:
supporting study
Study period:
2009-11-20 to 2010-01-08
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
other: Guideline study
Cross-reference
Reason / purpose for cross-reference:
reference to same study

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
2010
Report date:
2010

Materials and methods

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

Test material

Constituent 1
Chemical structure
Reference substance name:
Stearic acid, cobalt salt
EC Number:
237-016-4
EC Name:
Stearic acid, cobalt salt
Cas Number:
13586-84-0
Molecular formula:
C18H36O2.xCo
IUPAC Name:
lambda2-cobalt(2+) dioctadecanoate
Details on test material:
- Name of test material (as cited in study report): Stearic acid cobalt salt
- Physical state: solid, brown-violet
- Storage condition of test material: Store in a cool, well-ventilated place away from incompatible materials

Results and discussion

Boiling point
Atm. press.:
1 013 mBar
Decomposition:
yes
Decomp. temp.:
ca. 340 °C
Remarks on result:
other: Based on DSC-measurement, performed under nitrogen. Test item starts to boil under decomposition around 340 °C corrected at a pressure of 1013.3 hPa.

Any other information on results incl. tables

The measurement in an aluminium crucible (measured at 1015 hPa) with a hole showed an endothermic effect after the melting in the temperature range 330 – 490 °C with an onset temperature of 340 °C. A second measurement also showed an endothermic effect starting at 330 °C. However due to the uneven course of the base line a further interpretation of this measurement was not possible.

An additional measurement with the capillary method was performed in order to clarify the results of the DSC measurements.

Due to the result of the capillary measurement it can be concluded that the test item starts to boil under decomposition around 340 °C (based on the DSC method). Under the assumption of a boiling point of 340 °C, a correction of Δt of the boiling point to standard atmospheric pressure 1013.3 hPa was performed. The test item had a mean boiling point at atmospheric pressure (1013.3 hPa) of 340.0 °C.

Applicant's summary and conclusion

Conclusions:
The test item, stearic acid cobalt salt, starts to boil under decomposition around 340 °C corrected at a pressure of 1013.3 mbar.