Registration Dossier
Registration Dossier
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EC number: 204-661-8 | CAS number: 123-91-1
Flash point
Administrative data
Link to relevant study record(s)
Description of key information
The flash point of the substance is determined to be 11°C at 1013 hPa in a closed cup.
Key value for chemical safety assessment
- Flash point at 101 325 Pa:
- 11 °C
Additional information
Several reliable authoritative secondary sources reported the flash point of 1,4 -dioxane as result from experimental studies to be between 11°C and 18.3°C. Ullmann's Encyclopedia of Industrial Chemistry and GESTIS - Substance database of 'Berufsgenossenschaftlichen Instituts für Arbeitsschutz reports the flash point to be 11 °C at 1013 hPa. Lange's Handbook of Chemistry reported the flash point to be 12 °C and Hawley's Condensed Chemical Dictionary reported the flash oint to be 18.3 °C measured in a oppen cup.
In a worst case view the value from Ullmann's was chosen as key parameter for the flash point. A flash point of 11°C is regarded to be reliable for 1,4 -dioxane.
The following classification criteria are met:
R11 (highly flammable) of EU Directive 67/548/EEC: flash point <= 21 °C and initial boiling point > 35 °C;
Flammable liquids, Category 2 (highly flammable liquids and vapour) of EU CLP: flash point <= 23 °C and initial boiling point > 35 °C
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