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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-[(phenylamino)sulphonyl]phenyl]azo]-3-oxobutyramide

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.