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Diss Factsheets
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EC number: 225-591-4 | CAS number: 4948-28-1
- Life Cycle description
- Uses advised against
- Endpoint summary
- Appearance / physical state / colour
- Melting point / freezing point
- Boiling point
- Density
- Particle size distribution (Granulometry)
- Vapour pressure
- Partition coefficient
- Water solubility
- Solubility in organic solvents / fat solubility
- Surface tension
- Flash point
- Auto flammability
- Flammability
- Explosiveness
- Oxidising properties
- Oxidation reduction potential
- Stability in organic solvents and identity of relevant degradation products
- Storage stability and reactivity towards container material
- Stability: thermal, sunlight, metals
- pH
- Dissociation constant
- Viscosity
- Additional physico-chemical information
- Additional physico-chemical properties of nanomaterials
- Nanomaterial agglomeration / aggregation
- Nanomaterial crystalline phase
- Nanomaterial crystallite and grain size
- Nanomaterial aspect ratio / shape
- Nanomaterial specific surface area
- Nanomaterial Zeta potential
- Nanomaterial surface chemistry
- Nanomaterial dustiness
- Nanomaterial porosity
- Nanomaterial pour density
- Nanomaterial photocatalytic activity
- Nanomaterial radical formation potential
- Nanomaterial catalytic activity
- Endpoint summary
- Stability
- Biodegradation
- Bioaccumulation
- Transport and distribution
- Environmental data
- Additional information on environmental fate and behaviour
- Ecotoxicological Summary
- Aquatic toxicity
- Endpoint summary
- Short-term toxicity to fish
- Long-term toxicity to fish
- Short-term toxicity to aquatic invertebrates
- Long-term toxicity to aquatic invertebrates
- Toxicity to aquatic algae and cyanobacteria
- Toxicity to aquatic plants other than algae
- Toxicity to microorganisms
- Endocrine disrupter testing in aquatic vertebrates – in vivo
- Toxicity to other aquatic organisms
- Sediment toxicity
- Terrestrial toxicity
- Biological effects monitoring
- Biotransformation and kinetics
- Additional ecotoxological information
- Toxicological Summary
- Toxicokinetics, metabolism and distribution
- Acute Toxicity
- Irritation / corrosion
- Sensitisation
- Repeated dose toxicity
- Genetic toxicity
- Carcinogenicity
- Toxicity to reproduction
- Specific investigations
- Exposure related observations in humans
- Toxic effects on livestock and pets
- Additional toxicological data
Auto flammability
Administrative data
Link to relevant study record(s)
- Endpoint:
- auto-ignition temperature (liquids)
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- 2021-11-22 to 2021-11-25
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
- Qualifier:
- according to guideline
- Guideline:
- EU Method A.15 (Auto-Ignition Temperature (Liquids and Gases))
- Version / remarks:
- 2008
- Deviations:
- no
- Qualifier:
- according to guideline
- Guideline:
- DIN EN 14522, Method P (Determination of the auto ignition temperature of gases and vapours)
- Version / remarks:
- 2005
- Deviations:
- no
- Qualifier:
- according to guideline
- Guideline:
- DIN 51794 (Testing of mineral oil hydrocarbons - Determination of ignition temperature)
- Version / remarks:
- 2003
- Deviations:
- no
- GLP compliance:
- no
- Key result
- Auto-ignition temperature:
- 264 °C
- Atm. press.:
- 998.6 hPa
- Remarks on result:
- other: Main Test
- Conclusions:
- The test item has an auto-ignition temperature of 260 °C according to the Regulation (EC) No 440/2008 Method A.15. Auto-Ignition Temperature (Liquids and Gases) and DIN 51794 (2003): Testing of mineral oil hydrocarbons – Determination of ignition temperature.
- Executive summary:
The test item has a waxy consistency at room temperature and a melting range of 31 to 44 °C. Due to the low melting point, the self-ignition temperature was determined for safe handling of the test item. The test item has an auto-ignition temperature of 260 °C according to the Regulation (EC) No 440/2008 Method A.15. Auto-Ignition Temperature (Liquids and Gases) and DIN 51794 (2003): Testing of mineral oil hydrocarbons – Determination of ignition temperature. According to ECHA guidance - Information requirements and guidance on chemical safety assessment; Chapter R.7A: Endpoint Specific Guidance, July 2017 - Autothermal temperature for liquids is not directly used for classification and labeling according to Regulation (EC) 1272/2008. However, it can be used in the chemical safety assessment to consider the risks associated with the processing of the substance. According to DIN EN ISO/IEC 80079-20-1, the test item was assigned to temperature class T3.
Reference
Preliminary Test
In a preliminary test, an approximate value of the ignition temperature of the test item was first determined. Table 1 shows the result of the preliminary test. An ignition is marked with "+" and no ignition with "-". At each temperature, 5 drops were added to the Erlenmeyer flask.
| Preliminary test | |||||
Temperature/˚C | 203 | 253 | 303 | 295 | 283 | 273 |
Ignition/+/- | - | - | + | + | + | - |
| Atmospheric pressure: 1008.8 hPa |
In the preliminary test, the lowest temperature at which an ignition occurred was 283 °C.
Main Test
The lowest temperatures at which an ignition occurred in the main test provided in the table.
Table: Lowest temperatures at which an ignition occurred
Main test series | Lowest temperatures of an ignition | Highest temperatures without an ignition | Atmospheric Pressure |
1 | 267 °C | 266 °C | 1012.5 – 1017.5 hPa |
2 | 264 °C | 262 °C | 1009.8 - 1011.2 hPa |
3 | 267 °C | 264 °C | 998.6 hPa |
Based on the results of the main test series, the lowest auto-ignition temperature was 264 °C.
Regulation (EC) No 440/2008 and DIN 51794: The auto-ignition temperature, rounded to the nearest multiple of 5 °C, was found to be 260 °C.
For information: DIN EN 14522: The auto-ignition temperature reduced by 1.5 % and rounded to the nearest integer temperature was determined as 260 °C.
Temperature classes
According to DIN EN ISO/IEC 80079-20-1 the test item was assigned to temperature class T3 (see the following Table).
Table : Temperature classes
Auto-Ignition Temperature | Temperature Class | Maximum allowed surface temperature |
> 450 °C | T1 | 450 °C |
450 °C ≥ x > 300 °C | T2 | 300 °C |
300 °C ≥ x > 200 °C | T3 | 200 °C |
200 °C ≥ x > 135 °C | T4 | 135 °C |
135 °C ≥ x > 100 °C | T5 | 100 °C |
100 °C ≥ x > 85 °C | T6 | 85 °C |
Description of key information
The test item has an auto-ignition temperature of 260 °C according to the Regulation (EC) No 440/2008 Method A.15. Auto-Ignition Temperature (Liquids and Gases) and DIN 51794 (2003): Testing of mineral oil hydrocarbons – Determination of ignition temperature.
Key value for chemical safety assessment
- Autoflammability / Self-ignition temperature at 101 325 Pa:
- 260 °C
Additional information
The test item has a waxy consistency at room temperature and a melting range of 31 to 44 °C. Due to the low melting point, the self-ignition temperature was determined for safe handling of the test item. The test item has an auto-ignition temperature of 260 °C according to the Regulation (EC) No 440/2008 Method A.15. Auto-Ignition Temperature (Liquids and Gases) and DIN 51794 (2003): Testing of mineral oil hydrocarbons – Determination of ignition temperature. According to ECHA guidance - Information requirements and guidance on chemical safety assessment; Chapter R.7A: Endpoint Specific Guidance, July 2017 - Autothermal temperature for liquids is not directly used for classification and labeling according to Regulation (EC) 1272/2008. However, it can be used in the chemical safety assessment to consider the risks associated with the processing of the substance. According to DIN EN ISO/IEC 80079-20-1, the test item was assigned to temperature class T3.
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