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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.

The new ECHA CHEM database has been released by ECHA, and it now contains all REACH registration data. There are more details on the transition of ECHA's published data to ECHA CHEM here.

Diss Factsheets

Administrative data

Endpoint:
flammable solids
Remarks:
Pyrophoric liquids/solids (migrated from section 'Flammability')
Type of information:
experimental study
Adequacy of study:
key study
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
test procedure in accordance with national standard methods
Remarks:
Directive VDI 2263, Part 1

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
2015
Report date:
2016

Materials and methods

Test guideline
Qualifier:
according to guideline
Guideline:
other: Directive VDI 2263, Part 1

Test material

Constituent 1
Chemical structure
Reference substance name:
Trisodium 5-[[5-methyl-4-[(4-nitro-2-sulphonatophenyl)azo]-2-(3-sulphonatopropoxy)phenyl]azo]salicylate
EC Number:
277-753-9
EC Name:
Trisodium 5-[[5-methyl-4-[(4-nitro-2-sulphonatophenyl)azo]-2-(3-sulphonatopropoxy)phenyl]azo]salicylate
Cas Number:
74186-17-7
Molecular formula:
C23H21N5O12S2.3Na
IUPAC Name:
trisodium 2-hydroxy-5-({5-methyl-4-[(4-nitro-2-sulfonatophenyl)diazenyl]-2-(3-sulfonatopropoxy)phenyl}diazenyl)benzoate

Results and discussion

Flammable solidsopen allclose all
Key result
Test procedure:
other: burning index according to VDI 2263
Remarks on result:
other: burning index BZ 4
Remarks:
glowing without sparks (smouldering) or slow decomposition without flame
Key result
Test procedure:
burning rate test: preliminary screening test
Remarks on result:
substance does not ignite and propagate combustion either by burning with flame or smouldering along 200 mm of the powder train within the 2 minutes test period
Pyrophoric solids
Test procedure:
ignition time on contact with air
Remarks:
Ignition on contact with air refers to either Pyrophoric solids or Pyrophoric liquids depending on physical state (migrated information).
Remarks on result:
no ignition on contact with air (not further specified)
Remarks:
corresponding to 'no' in migrated source record.

Any other information on results incl. tables

The product showed a smouldering fire when an ignition source (flame or hot wire) was applied at ambient temperature. A slow propagation of the combustion was observed. The product became swollen and did not melt.

The combustion behaviour of the product at ambient temperature is characterized by the burning index BZ 4 (glowing without sparks (smouldering) or slow decomposition without flame).

Due to the fact that a propagation of the combustion was observed the burning time over a distance of 200 mm had to be determined. Preliminary test: The smouldering fire extinguished after approximately 50 mm. Therefore the main test to determine the burning rate was not required.

Applicant's summary and conclusion

Interpretation of results:
non flammable
Remarks:
Migrated information
Conclusions:
The smouldering fire extinguished after approximately 50 mm. Therefore, the substance has not to be classified as highly flammable solid according to Regulation (EC) No 1272/2008.