Registration Dossier
Registration Dossier
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EC number: 222-103-1 | CAS number: 3349-36-8
Flash point
Administrative data
Link to relevant study record(s)
Description of key information
The flash point of the test material has been determined to be 71.3 °C at 769.7 mm Hg, using a manual Pensky-Martens closed-cup apparatus, in a study carried out in accordance with the testing standard ASTM D93-13 “Standard Test Methods for Flash Point by Pensky-Martens Closed Cup Tester”.
Key value for chemical safety assessment
- Flash point at 101 325 Pa:
- 71.3 °C
Additional information
A reliability rating of 1 was assigned to the key study, Finkelshtein (2014), according to the criteria of Klimisch et al. (1997). The supporting study, Atwal & Tremain (2010), was assigned a reliability rating of 3 in accordance with the criteria set forth by Klimisch et al. (1997).
The key study was selected on the basis that the value obtained was deemed to be more consistent with experience of the chemical in use. It is considered that contract research organisations usually run such determinations as serial examinations, preparing sample cups with samples to be tested in advance and placing them in a queue. When this test material is left standing open, the humidity of ambient air will react with the material to liberate butanol. As a result of this, values lower than the true flash point of the substance may be seen, resulting in a “false positive” being obtained. This effect is more pronounced with a small sample size and a longer queuing time.
As it can be seen that inadequate handling of the test material may affect the flashpoint data by producing artificially low values, it can be concluded that when a determination gives a higher flashpoint value, it is more reliable than that giving a lower one.
In the key study, the flash point of the test material was investigated in a study carried out in accordance with the testing standard ASTM D93-13 “Standard Test Methods for Flash Point by Pensky-Martens Closed Cup Tester”.
The test was conducted using manual Pensky-Martens closed-cup apparatus. A brass test cup of specified dimensions was filled to the inside mark with the test material and fitted with a cover of specified dimensions. It was then heated and the test material stirred at a specified rate. An ignition source was directed into the test cup at regular intervals with simultaneous interruption of the stirring until a flash was detected.
Under the conditions of this study the flash point of the test material was determined to be 71.3 °C at 769.7 mm Hg.
In the supporting study, the flash point of the test material was determined to be 54 ± 2 °C,using a closed cup equilibrium method, designed to be compatible with Method A.9 Flash Point of Commission Regulation (EC) No 440/2008 of 30 May 2008.
Information on Registered Substances comes from registration dossiers which have been assigned a registration number. The assignment of a registration number does however not guarantee that the information in the dossier is correct or that the dossier is compliant with Regulation (EC) No 1907/2006 (the REACH Regulation). This information has not been reviewed or verified by the Agency or any other authority. The content is subject to change without prior notice.
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