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Flammability

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Endpoint:
flammable solids
Type of information:
read-across from supporting substance (structural analogue or surrogate)
Adequacy of study:
weight of evidence
Reliability:
4 (not assignable)
Rationale for reliability incl. deficiencies:
other: see 'Remark'
Remarks:
The test method is commonly used in other than REACH Regulation context for the flammability and burning characterization and it can be considered as scientifically acceptable. Nevertheless, only the test sheet is available. The original report is no more available and many information are missing.
Justification for type of information:
REPORTING FORMAT FOR THE ANALOGUE APPROACH
The usage of information on Direct Blue 199_Na, which has the same main component and with a different counter ion, can be considered as suitable and appropriated because the difference in salification is expected to not influence the characteristics related to the specific end-point.
The impurity profile does not impact on the read across proposed. Details on the approach followed are included in the document attached to the IUCLID section 13.
Reason / purpose:
read-across source
Qualifier:
according to
Guideline:
other: VDI-Guideline-2263
Principles of method if other than guideline:
Burning behaviour test
The test is performed at ambient temperature (20 °C) and at elevated temperature (100 °C) as well. It provides an indication of the extent to which a localised hot spot will propagate throughout a given powder sample.
GLP compliance:
not specified

Burning index number at 20 °C: 2

Burning index number at 100 °C: 2

Interpretation of results:
non flammable
Remarks:
Migrated information
Conclusions:
Non-flammable
Executive summary:

The flammability of the test substance was examined in the burning behaviour test, according to the VDI-guideline 2263.

The test was performed at ambient temperature (20 °C) and at elevated temperature (100 °C) as well. It provides an indication of the extent to which a localised hot spot will propagate throughout a given powder sample, using a combustibility index number: 1 to 6.If the combustibility index of a given sample of powder is 4, 5 or 6 the sample material is further tested under vacuum.

The burning index was 2 at both the temperatures at 20 -100 °C.

 

Discussion and conclusion

The burning index 2 is assigned to substances for which extinction occurs after short burning (no spreading of fire). A burinig index of 3 is assigned to substances for which local burning or glowing, limited spread of the flame (no spreading of fire) is observed, while a burning index 4 is assigned to substances for which smoldering fire or slow flameless decomposition (fire spreads) is observed. Substances with burning class greater than 4 are candidates for classification as "flammable solids" according to the UN Recommendations on the Transport of Hazardous Goods.

In conclusion, the test item can be considered as non-flammable solid.

Endpoint:
flammable solids
Type of information:
read-across from supporting substance (structural analogue or surrogate)
Adequacy of study:
weight of evidence
Reliability:
4 (not assignable)
Rationale for reliability incl. deficiencies:
other: see 'Remark'
Remarks:
The test method is commonly used in other than REACH Regulation context for the flammability and burning characterization and it can be considered as scientifically acceptable. Nevertheless, only the test sheet is available. The original report is no more available and many information are missing.
Justification for type of information:
REPORTING FORMAT FOR THE ANALOGUE APPROACH
The usage of information on Direct Blue 199_Na, which has the same main component and with a different counter ion, can be considered as suitable and appropriated because the difference in salification is expected to not influence the characteristics related to the specific end-point.
The impurity profile does not impact on the read across proposed. Details on the approach followed are included in the document attached to the IUCLID section 13.
Reason / purpose:
read-across source
Principles of method if other than guideline:
The test substance was examined for flammable decomposition gases.
GLP compliance:
not specified

No flammable decomposition gases up to 550 ° C.

Conclusions:
No flammable decomposition gases up to 550 °C.
Executive summary:

The test material was examinef for flammable decomposition gases. No flammable decomposition gases were recorded up to 550 ° C.

Conclusion

No flammable decomposition gases up to 550 °C.

Description of key information

Non flammable

Key value for chemical safety assessment

Flammability:
non flammable

Additional information

Burning behaviour test, according to the VDI-guideline 2263, and specific investigation on decomposition gases.

Justification for classification or non-classification

According to the CLP Regulation (EC 1272/2008), 2.7 Section, Flammable Solids, powdered, granular or pasty substances or mixtures shall be classified as readily combustible solids when the time of burning of one or more of the test runs, performed in accordance with the test method described in Part III, sub-section 33.2.1, of the UN Recommendations on the Transport of Dangerous Goods, Manual of Tests and Criteria, is less than 45 seconds or the rate of burning is more than 2.2 mm/s.

Alternatively, according to the Guidance on the Application of the CLP Criteria*, the burning index (referred to as ‘class number’ in VDI 2263) as obtained from the Burning Behaviour test (VDI 2263, part 1) may be used. If a burning index of 3 or less is found, the substance should not be classified as a flammable solid and no further testing is required.

A burning index of 2 resulted from the burning behaviour test for the substance, sodium salt.

In conclusion, the substance does not meet the criteria to be classified as flammable, according to the CLP Regulation (EC 1272/2008).

*ECHA 2015. Guidance on the Application of the CLP Criteria. Guidance to Regulation (EC) No 1272/2008 on classification, labelling and packaging (CLP) of substances and mixtures. Version 4.1 – June 2015