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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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:
auto-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:
2016
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

Auto-ignition temperature (liquids / gases)open allclose all
Auto-ignition temperature:
>= 220 °C
Atm. press.:
ca. 1 013 hPa
Remarks on result:
other: pure test substance
Auto-ignition temperature:
>= 230 °C
Atm. press.:
ca. 1 013 hPa
Remarks on result:
other: 1:1 mixture of test substance with Kieselguhr
Relative self-ignition temperature (solids)open allclose all
Relative self-ignition temperature:
>= 220 °C
Remarks on result:
other: pure test substance
Remarks:
at atm. press. of ca.1013.0 hPa
Relative self-ignition temperature:
>= 230 °C
Remarks on result:
other: 1:1 mixture of test substance with Kieselguhr
Remarks:
at atm. press. of ca.1013.0 hPa

Any other information on results incl. tables

In the screening test according to Grewer with the pure product an exothermal effect was detected starting at 220 °C. A multistage reaction was observed which led to a maximum product temperature of more than 500 °C.

In the screening test with the kieselgur mixture (1:1) an exothermal effect was detected starting at 230 °C. A multistage reaction was observed which led to a maximum product temperature of more than 450 °C

Between 60 and 160 °C an endothermal effect was observed. After the test the mesh wire basket of the pure product was black and swollen.

See figures 1 and 2 (attachment)

Applicant's summary and conclusion

Conclusions:
The substance has not to be classified as self-heating according to Regulation (EC) No 1272/2008, Annex I, 2.11.4