Activated Carbon - High Density Skeleton

Auto flammability

Link to relevant study record(s)

Reference

Reference 1

Endpoint:

relative self-ignition temperature (solids)

Type of information:

experimental study

Adequacy of study:

key study

Study period:

11/03/2010 - 12/03/2010

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

other: Study according to international guideline (EU method A.16) under GLP. No deviations from guideline reported.

Reason / purpose for cross-reference:

reference to same study

Qualifier:

according to guideline

Guideline:

EU Method A.16 (Relative Self-Ignition Temperature for Solids)

Deviations:

no

Principles of method if other than guideline:

Not relevant

GLP compliance:

yes (incl. QA statement)

Relative self-ignition temperature:

430 °C

Remarks on result:

other: the test substance showed a sharp exothermic reaction at this temperature. Therefore no self heating below an oven temperature of 400C appeared.

Remarks:

at atm. press. of 99.1 kPa

At the end of the measurement, Steam Activated Carbon was a black powder with some lumps and some isolated grey residue. For detailed results, see attached file results.doc.

Conclusions:

Steam activated carbon is not auto-flammable according to the criteria in EEC Directive 92/69 A.16.

Executive summary:

The auto-flammability of this activated carbon was determined according to EU Method A.16 under GLP. The auto-flammability temperature was found to be 430 degrees Celsius at 99.1 kPa. Therefore this activated is not considered to be auto-flammable according to the criteria in EEC Directive 92/69 A.16.

Reference 2

Endpoint:

auto-flammability

Type of information:

experimental study

Adequacy of study:

weight of evidence

Reliability:

2 (reliable with restrictions)

Rationale for reliability incl. deficiencies:

other: Non-GLP study according to international guideline (UN manual of tests and criteria, Part III, Section 33.3.1.6, Test N4, Test method for self heating substances).

Reason / purpose for cross-reference:

reference to same study

Qualifier:

according to guideline

Guideline:

other: UN manual of tests and criteria, Part III, Section 33.3.1.6, Test N4, Test method for self heating substances

Deviations:

no

Principles of method if other than guideline:

Not relevant

GLP compliance:

no

Relative self-ignition temperature:

> 200 °C

Remarks on result:

other: Negative result reported (< 200 degrees Celsius), no atmospheric pressure reported

No data

Conclusions:

Activated Carbon - High Density Skeleton (AC - HDS) is not a self-heating substance of class division 4.2 substances according to IMDG.

Executive summary:

The self-heating temperature of Activated Carbon - High Density Skeleton (AC - HDS) was investigated according to " UN manual of tests and criteria, Part III, Section 33.3.1.6, Test N4, Test method for self heating substances". Activated Carbon - High Density Skeleton (AC - HDS) was found not to be a self-heating substance of class division 4.2 substances according to IMDG.

Reference 3

Endpoint:

auto-flammability

Type of information:

experimental study

Adequacy of study:

weight of evidence

Study period:

2010

Reliability:

2 (reliable with restrictions)

Rationale for reliability incl. deficiencies:

other: according to UN method N4 , non GLP

Qualifier:

according to guideline

Guideline:

other: method N4, UN recommendations, manual test& Criteria part II, 4

Deviations:

no

GLP compliance:

no

Remarks:

PICA laboratory is accredited for performing this test

Remarks on result:

other: No self heating is observed

Graphs of the dual experiments can be found in the attached report

Conclusions:

Coconut Based Activated Carbon and Mineral based Activated Carbon: Regarding the 2 experiments enclosed, no self heating is observed for both activated carbons. The PICA Laboratory is accredited to conduct the “Self Heating test”, according to the legislation of transportation of dangerous goods, for Activated Carbons (n° ONU 1362) for classification as 4.2.(method N 4)

Executive summary:

Coconut Based Activated Carbon and Mineral based Activated Carbon:Regarding the 2 experiments enclosed, no self heating is observed for both activated carbons.The PICA Laboratory is accredited to conduct the “Self Heating test”, according to the legislation of transportation of dangerous goods, for Activated Carbons (n° ONU 1362) for classification as 4.2. (method N 4)

Description of key information

Activated Carbon - High Density Skeleton show no self heating properties as defined in the Dangerous Substances Directive, CLP and the UN recommendations on transport, manual of test and criteria, part III. 

Key value for chemical safety assessment

Autoflammability / Self-ignition temperature at 101 325 Pa:

430 °C

Additional information

The property auto flammability is not linked to a specific composition of activated carbon as the variation in this property occurs accros any range of compositions of activated carbon. Hence, the classification cannot be linked to a specific composition.

Testing an individual type of activated carbon is the only reliable method to assertain the autoflammability properties of that specific type of carbon.

Activated Carbon - High Density Skeleton show no self heating properties as defined in the Dangerous Substances Directive, CLP and the UN recommendations on transport, manual of test and criteria, part III.