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Administrative data

Endpoint:
relative self-ignition temperature (solids)
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:
Tetrasodium [μ-[3-[[2-amino-5-hydroxy-6-[(2-hydroxy-5-nitro-3-sulphophenyl)azo]-7-sulpho-1-naphthyl]azo]-2-hydroxy-5-sulphobenzoato(8-)]]dichromate(4-)
EC Number:
276-538-7
EC Name:
Tetrasodium [μ-[3-[[2-amino-5-hydroxy-6-[(2-hydroxy-5-nitro-3-sulphophenyl)azo]-7-sulpho-1-naphthyl]azo]-2-hydroxy-5-sulphobenzoato(8-)]]dichromate(4-)
Cas Number:
72252-58-5
Molecular formula:
C23H8Cr2N6O16S3.4Na
IUPAC Name:
tetrasodium [μ-[3-[[2-amino-5-hydroxy-6-[(2-hydroxy-5-nitro-3-sulphophenyl)azo]-7-sulpho-1-naphthyl]azo]-2-hydroxy-5-sulphobenzoato(8-)]]dichromate(4-)

Results and discussion

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:
>= 190 °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 450 °C.

In the screening test with the kieselgur mixture (1:1) a weak exothermal effect was detected starting at 190 °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.

See figures 1 and 2 (attachment)

Applicant's summary and conclusion

Conclusions:
In the Grewer-Oven-Test an exothermal effect of the pure substance was detected starting at 220°C. Therefore, the test item has not to be classified as self-heating substance according to Regulation (EC) No 1272/2008, Annex I, 2.11.4

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