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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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:
relative self-ignition temperature (solids)
Type of information:
experimental study
Adequacy of study:
key study
Study period:
2013
Reliability:
1 (reliable without restriction)

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
2013
Report date:
2013

Materials and methods

Test guidelineopen allclose all
Qualifier:
according to guideline
Guideline:
EU Method A.16 (Relative Self-Ignition Temperature for Solids)
Qualifier:
equivalent or similar to guideline
Guideline:
other: UN Transport Guideline Division 4.2 (2009)
Qualifier:
equivalent or similar to guideline
Guideline:
other: VOl 2263 Sheet 1 Grewer-Oven (1990)
GLP compliance:
yes (incl. QA statement)

Test material

Constituent 1
Chemical structure
Reference substance name:
disodium 4-hydroxy-3-[(E)-2-[4-({4-[(E)-2-(1-hydroxy-4-sulfonaphthalen-2-yl)diazen-1-yl]-3-methoxyphenyl}(phenyl)methyl)-2-methoxyphenyl]diazen-1-yl]naphthalene-1-sulfonate
EC Number:
700-924-0
Molecular formula:
C41H30N4Na2O10S2
IUPAC Name:
disodium 4-hydroxy-3-[(E)-2-[4-({4-[(E)-2-(1-hydroxy-4-sulfonaphthalen-2-yl)diazen-1-yl]-3-methoxyphenyl}(phenyl)methyl)-2-methoxyphenyl]diazen-1-yl]naphthalene-1-sulfonate

Results and discussion

Relative self-ignition temperature (solids)
Relative self-ignition temperature:
> 220 - 400 °C
Remarks on result:
other: the test item does not have a self-ignition temperature.

Any other information on results incl. tables

In the investigation of self-ignition in the Grewer-oven for the pure test item a small, broad

endothermic effect was observed in the temperature range from 70 - 180 °C. From just

above 220 °C an exothermic process was detected, that led to a maximum temperature of

approx. 350 °C. The test item had welled out of the wire basket during the test.

For the test item in mixture with Kieselguhr a small exothermic effect was observed from

around 250 °C, followed by a larger exothermic effect from about 300 °C.

Applicant's summary and conclusion

Conclusions:
test item does not have a self-ignition temperature
Executive summary:

The pure test item indicated self-ignition from a temperature of just above 220 °C.

Directive 67/548/EEC: According to Directive 67/548/EEC, the temperature of the oven at which the temperature of

the test item reaches 400 °C by self-heating is regarded as the self-ignition temperature. Therefore the test item does not have a self-ignition temperature.

UN Transport Guideline:As the self-heating temperature lies above 220 °C, the test item does not have to be

classified as self-heating substance in Class 4 Division 4.2 according to the UN Transport Guideline.

GHS and EC 1272/2008 (CLP Regulation) Annex 1: 2.11: As the self-heating temperature lies above 220 °C, the test item does not have to be classified as self-heating substance according to EC 1272/2008 (CLP Regulation) Annex 1: 2.11 .