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Auto flammability

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Description of key information

Isobutyl-(S)-lactate shows an auto-ignition temperature of 410 °C at 1019.0 to 1019.9 hPa.

Key value for chemical safety assessment

Autoflammability / Self-ignition temperature at 101 325 Pa:
410 °C

Additional information

The auto-ignition temperature of isobutyl-(S)-lactate was tested in a GLP compliant study according to EU method A.15 (Regulation EC 440/2008), DIN Guide 51794 from May 2003 and the IEC standard 79-4, Part 4, Method of Test for Ignition Temperature from 1975, using a commercially available auto-ignition temperature apparatus. Samples were injected into the heated-up test vessel. The occurrence of clearly perceptible flames and/or explosions served as indication for auto-ignition. Preliminary findings indicate an auto-ignition temperature of 420 °C. The main study refined the final temperature to 410 °C at 1019.0 to 1019.9 hPa. Varying across the sample volumes, the ignition was delayed between 10 and 14 seconds. All flames observed were of orange/blue colour.

The value can be extrapolated to the target substance isobutyl-(R)-lactate without restrictions, since being the optical antipode.