Registration Dossier
Registration Dossier
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EC number: 202-728-6 | CAS number: 99-08-1
Auto flammability
Administrative data
Link to relevant study record(s)
- Endpoint:
- auto-ignition temperature (liquids)
- Type of information:
- experimental study
- Adequacy of study:
- supporting study
- Reliability:
- 4 (not assignable)
- Rationale for reliability incl. deficiencies:
- documentation insufficient for assessment
- Justification for type of information:
- Due to insufficient reporting of the experimental details, this study was rated with a Klimisch score of 4 (‘not assignable’). As none of the available studies can serve as a key study with a sufficiently detailed reporting justifying a Klimisch score of 1 or 2 for the given endpoint, several independent sources were used in a weight of evidence approach. The combined data from handbooks or collection of data provide experimental values in a similar range, supporting the reliability of the result.
- Qualifier:
- according to guideline
- Guideline:
- DIN 51794 (Testing of mineral oil hydrocarbons - Determination of ignition temperature)
- Deviations:
- not specified
- GLP compliance:
- not specified
- Auto-ignition temperature:
- ca. 470 °C
- Remarks on result:
- other: Athmospheric pressure was not reported.
- Executive summary:
Bayer, 1976
The auto-ignition temperature of 3-nitrotoluene is 470 °C. The atmospheric pressure was not reported.
- Endpoint:
- auto-ignition temperature (liquids)
- Type of information:
- experimental study
- Adequacy of study:
- weight of evidence
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- data from handbook or collection of data
- Justification for type of information:
- Due to insufficient reporting of the experimental details, this study was rated with a Klimisch score of 4 (‘not assignable’). As none of the available studies can serve as a key study with a sufficiently detailed reporting justifying a Klimisch score of 1 or 2 for the given endpoint, several independent sources were used in a weight of evidence approach. The combined data from handbooks or collection of data provide experimental values in a similar range, supporting the reliability of the result.
- Principles of method if other than guideline:
- secondary peer reviewed source, valid collection of data
- GLP compliance:
- not specified
- Specific details on test material used for the study:
- - Name of test material (as cited in study report): m-(meta)Nitrotoluene, 3-Nitrotoluene
- Analytical purity: no data - Auto-ignition temperature:
- 450 °C
- Remarks on result:
- other: The value is assumed to be obtained under normal atmospheric conditions.
- Executive summary:
Hommel, 1997
Auto-ignition temperature for 3-nitrotoluene is 450 °C.
The value is assumed to be obtained under normal atmospheric conditions.
Referenceopen allclose all
Description of key information
The individual study reports (data from handbooks or collection of data and other experimental studies) show some deficiencies with respect to the comprehensiveness of the experimental details. Therefore, a reliability of 1 or 2 and thus adequacy as key study was not assignable for any of the individual studies. Consequently, the studies were assigned a Klimisch score of 4 (according to guidance document R.4, ‘not assignable: studies or data […] which are only listed in short abstracts or secondary literature (books, reviews, etc.)). As the individual studies report values are in a similar range, collectively, these studies can be used to conclude on this endpoint and to satisfy the information requirement.
The auto-ignition temperature of 3-nitrotoluene was reported to be in the range of 450-470 °C. The value of 450 °C was chosen as key value for chemical safety assessment.
Hommel, 1997
Auto-ignition temperature for 3-nitrotoluene is 450 °C. The value is assumed to be obtained under normal atmospheric conditions.
Bayer, 1976
The auto-ignition temperature of 3-nitrotoluene is 470 °C. The atmospheric pressure was not reported.
The WoE is further supported by the values reported for the closely related isomers 2- and 4-nitrotoluene:
The auto-ignition temperature of 2-nitrotoluene is 420 °C. Atmospheric pressure was not reported. The value is assumed to be measured under normal atmospheric conditions. (NIOSH, 2009; HSDB 2009; secondary literature source: EU risk assessment report 2008)
The auto-ignition temperature of 4-nitrotoluene is 450 °C. (Hommel G, 1997 and HSDB, 2009)
Key value for chemical safety assessment
- Autoflammability / Self-ignition temperature at 101 325 Pa:
- 450 °C
Additional information
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