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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Physical & Chemical properties

Auto flammability

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Administrative data

Endpoint:
auto-flammability
Type of information:
experimental study
Adequacy of study:
key study
Study period:
21 January 1998
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
other: Basic data given: comparable to guidelines/standards

Data source

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

Materials and methods

Principles of method if other than guideline:
Screening test according to Grewer and according to company guideline

Test material

Constituent 1
Chemical structure
Reference substance name:
N-(4-chloro-2,5-dimethoxyphenyl)-2-[[2,5-dimethoxy-4-[(phenylamino)sulphonyl]phenyl]azo]-3-oxobutyramide
EC Number:
235-427-3
EC Name:
N-(4-chloro-2,5-dimethoxyphenyl)-2-[[2,5-dimethoxy-4-[(phenylamino)sulphonyl]phenyl]azo]-3-oxobutyramide
Cas Number:
12225-18-2
Molecular formula:
C26H27ClN4O8S
IUPAC Name:
N-(4-chloro-2,5-dimethoxyphenyl)-2-{[2,5-dimethoxy-4-(phenylsulfamoyl)phenyl]diazenyl}-3-oxobutanamide

Results and discussion

Auto-ignition temperature (liquids / gases)
Auto-ignition temperature:
240 °C
Atm. press.:
ca. 1 013 hPa
Remarks on result:
other:
Relative self-ignition temperature (solids)
Relative self-ignition temperature:
240 °C
Remarks on result:
other:
Remarks:
at atm. press. of ca.1013.0 hPa

Any other information on results incl. tables

In the Grewer oven test with the neat substance, slight self-ignition is observed from 240°C upwards but temperatures stay well below 400°C.

The 1:1 mixture with kieselguhr also showed self-ignition temperature at 240 °C with sample temperatures increase to well above 600°C.

The self-ignition temperature is therefore given for the 1:1 mixture with kieselguhr.

Applicant's summary and conclusion

Conclusions:
The self-ignition temperature is 240°C.
Executive summary:

In a screening test according to Grewer, the test substance shows a self-ignition temperature of 240°C and does not have to be classified as self-heating according to UN class 4.2.