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Physical & Chemical properties

Stability: thermal, sunlight, metals

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Administrative data

Endpoint:
stability: thermal, sunlight, metals, other
Remarks:
Migrated from section 'Stability: thermal, sunlight, metals'
Type of information:
experimental study
Adequacy of study:
key study
Study period:
2012
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
other: Guideline study without GLP and with an only short description.
Cross-reference
Reason / purpose for cross-reference:
reference to same study

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
2013
Report date:
2013

Materials and methods

Test guidelineopen allclose all
Qualifier:
equivalent or similar to guideline
Guideline:
other: EU. A.16, Relative self-ignition temperature for solids.
Deviations:
not specified
Qualifier:
according to guideline
Guideline:
other: UN Manual of tests and criteria.
Deviations:
not specified
Principles of method if other than guideline:
The substance under test is placed in an oven (Grewer oven) at room temperature; the temperature/time curve relating to conditions in the centre of the sample is recorded while the temperature of the oven is increased to 363 °C, or to the melting point if lower. The temperature of the oven at which the sample temperature reaches 400 °C by self-heating is called the self-ignition temperature. Testing in the Grewer oven is a screening procedure for self-heating substances.
GLP compliance:
not specified

Test material

Constituent 1
Chemical structure
Reference substance name:
Aspartic acid
EC Number:
200-291-6
EC Name:
Aspartic acid
Cas Number:
56-84-8
Molecular formula:
C4H7NO4
IUPAC Name:
aspartic acid
Details on test material:
Other name: L-ASP
Batch No. LPLA2A 3011

Results and discussion

For thermal stability study

Test substance thermally stable:
yes
Operating temperature
Operating temp.:
20 - 363 °C

Any other information on results incl. tables

A minor exothermal event with an onset temperature of 305 °C and a deltaT of 5 °C was observed. Otherwise only endothermal processes, starting at ca. 200 °C were observed.

Testing in the "Grewer oven" is a screening procedure for "self-heating substances". If T(onset) >= 220 °C (or no exothermal onset is detectable because of melting) testing according to UN Recommendations on the Transport of Dangerous Goods, Manual of Tests and Criteria, 5th Edition, 2009 is not required.

 

Applicant's summary and conclusion

Conclusions:
L-aspartic acid has no self-ignition and no self-heating properties.
Executive summary:

A minor exothermal event with an onset temperature of 305 °C and a deltaT of 5 °C was observed. Otherwise only endothermal processes, starting at ca. 200 °C were observed.

Testing in the "Grewer oven" is a screening procedure for "self-heating substances". If T(onset) >= 220 °C (or no exothermal onset is detectable because of melting) testing according to UN Recommendations on the Transport of Dangerous Goods, Manual of Tests and Criteria, 5th Edition, 2009 is not required.

 

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