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Physical & Chemical properties

Auto flammability

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Description of key information

Auto-ignition temperature_EU Method A.15: 360 +/- 5 °C (Atmospheric pressure: 97.2 to 101.0 kPa)

Key value for chemical safety assessment

Autoflammability / Self-ignition temperature at 101 325 Pa:
360 °C

Additional information

The auto-ignition temperature of the C20-24 sodium sulfonate (Benzenesulfonic acid, mono-C20-24 (even)-sec-alkyl derivs., para-, sodium salts) was determined using a Carbolite flask heater and a procedure compatible with EU Method A.15 (Tremain, 2015a). The test flask was heated in a flask heater. Aliquots of test item (tested as received) dropped into the flask which was observed for signs of ignition over a 300 second period. This procedure was repeated, varying the sample size, as necessary, until the lowest temperature at which ignition, if any, occurred within 300 seconds of insertion, was determined. The test item has been determined to have an auto-ignition temperature of 360 ± 5 °C.