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Description of key information

The studies do not need to be performed for self-reactive substances (technically not feasible).

Key value for chemical safety assessment

not classified

Additional information

OBSH was tested for flammability by challenging the substance with a burning cigarette and burning match. The substance did not develop a visible flame, but smoke developed. The determined burning index was 6. Flammability was additionally analysed using Godbert-Greenwald furnace, and ignition temperature was established to 530 degrees celcius.

According to the CLP Guidance (ECHA, 2017), if a a burning index of 3 or less is found, the substance should not be classified as a flammable solid and no further testing is required. However, if smouldering or a flame is observed, the full test must be carried out. Since smouldering occurred and the burning index was > 3, further information is required.

Justification for classification or non-classification

The substance is not classified as flammable, because OBSH is classified as a self-reactive substance type D.