Registration Dossier

Administrative data

Endpoint:
flammable solids
Type of information:
experimental study
Adequacy of study:
key study
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
comparable to guideline study with acceptable restrictions
Remarks:
standard operating procedure of testing institute
Cross-reference
Reason / purpose for cross-reference:
reference to same study
Reference
Endpoint:
melting point/freezing point
Type of information:
experimental study
Adequacy of study:
key study
Study period:
September 9, 1998
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
comparable to guideline study with acceptable restrictions
Remarks:
according to standard operating procedure of testing institute
Reason / purpose for cross-reference:
reference to same study
Principles of method if other than guideline:
Differential thermal analysis (DTA)
Type of method:
differential scanning calorimetry
Remarks:
DTA
Melting / freezing pt.:
323 °C
Decomposition:
yes
Decomp. temp.:
325 °C

The DTA shows an endothermal reaction with an onset at 322.84 °C (rounded value of 323 °C taken as melting point) and a peak at 324.21 °C. Decomposition starts from the melting substance by a two-stage process. The (exothermal) decomposition reaction shows an onset at 325.08 °C (rounded value of 325 °C taken as decomposition temperature) and a peak at 330.57 °C, the decomposition energy is -610 J/k (mean from 2 measurements).

Conclusions:
Decomposition starts from the melting substance, with a melting point of 323 °C and a decompisition temperature of 325 °C.

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
1998
Report date:
1998

Materials and methods

Test guideline
Qualifier:
equivalent or similar to guideline
Guideline:
other: Directive VDI 2263, part 1
Principles of method if other than guideline:
Determination of the combustion index ( "Brennzahl") and the burning rate

Test material

Constituent 1
Chemical structure
Reference substance name:
2,2'-[(3,3'-dichloro[1,1'-biphenyl]-4,4'-diyl)bis(azo)]bis[N-(2-methoxyphenyl)-3-oxobutyramide]
EC Number:
224-867-1
EC Name:
2,2'-[(3,3'-dichloro[1,1'-biphenyl]-4,4'-diyl)bis(azo)]bis[N-(2-methoxyphenyl)-3-oxobutyramide]
Cas Number:
4531-49-1
Molecular formula:
C34H30Cl2N6O6
IUPAC Name:
2,2'-[(3,3'-dichlorobiphenyl-4,4'-diyl)didiazene-2,1-diyl]bis[N-(2-methoxyphenyl)-3-oxobutanamide]
Test material form:
solid: nanoform

Results and discussion

Flammable solidsopen allclose all
Test procedure:
other: burning index according to VDI 2263, part 1
Remarks on result:
other: burning index 5
Remarks:
burning with flame or spark generation
Test procedure:
burning rate test: preliminary screening test
Burning time:
115 s
Remarks on result:
other: burning time for a distance of 100 mm

Any other information on results incl. tables

the test item showed burning with flame when an ignition source was applied. A propagation of the combustion was observed and assessed as combustion index 5.

Thus, the burning rate had to be determined: 

 

Burning time for 100 mm: 151 s, corresponding to 0.87 mm/s

Applicant's summary and conclusion

Interpretation of results:
not classified based on GHS criteria
Conclusions:
With a burning time for 100 mm of 115 s (burning rate: 0.87 mm/s), the test item has not to be classified as flammable solid according to Regulation (EC) No 1272/2008.