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Auto flammability

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Description of key information

The Auto ignition temperature was determined to be 359°C at 745 mm Hg according to the ASTM E659 method.
The test was performed in accordance with the procedure and within the linear range of the calibration. The result is therefore valid.

Key value for chemical safety assessment

Autoflammability / Self-ignition temperature at 101 325 Pa:
359 °C

Additional information

A reliability rating of 2 was assigned to the key study, according to the criteria of Klimisch, 1997 as the study was conducted in accordance the ASTM E659 method, however there was no GLP data and limited information on methods and results.

The study is being used as read across to a structurally similar substance (Phenol, tetrapropenyl-, sulfurized, carbonates, calcium salts; CAS No. 122384-86-5/68784-25-8) as there was no available data to fulfil this endpoint for the registration substance.

The substance is composed of a series of alkylated phenol species of variable composition and a highly refined, lubricant base oil necessary to act as a solvent for the synthetic reaction and to optimize the reaction kinetics used in the substance’s manufacture. Attempts to remove this base oil from the substance result in changes to the other components’ original structures and the physicochemical characteristics of the substance as a whole. With this in mind, the substance is being registered to include the base oil as a component of the substance and thus the base oil is present in the test material.

The substance is one of a series of chemically similar materials each of which is composed of the same highly refined, lubricant base oil and different although closely related series of alkylated phenol species. Although the alkylated phenol series present in the different substances are considered different enough to warrant separate registrations, they are none the less all extremely closely related and the EPIWIN program predicts very similar properties for a number of representative structures. This high degree of similarity, in conjunction with the presence of the same base oil, which is itself understood to have a strong influence on the overall physicochemical properties of the substances is considered sufficient grounds to allow the use of read across between the different members of these “phenate” substances for the studies conducted to examine their physicochemical properties.