FRICTIONAL IGNITION OF GASES AND VAPOURS

FRICTIONAL IGNITION OF GASES AND VAPOURS FRICTIONAL INITIATION OF DUST CLOUDS GRAVEL... 

The decomposition of self-reactive substances can be initiated by heat, contact with catalytic impurities (e.g. acids, heavy-metal compounds, bases), friction or impact. The rate of decomposition increases with temperature and varies with the substance. Decomposition, particularly if no ignition occurs, may result in the evolution of toxic gases or vapours. For certain self-reactive substances, the temperature shall be controlled. Some self-reactive substances may... 

The decomposition of self-reactive substances can be initiated by heat, contact with catalytic impurities (e.g. acids, heavy-metal compounds, bases), friction or impact. The rate of decomposition increases with temperature and varies with the substance. Decomposition, particularly if no ignition occurs, may result in the evolution of toxic gases or vapours. For certain self-reactive substances, the temperature must be controlled. Some self-reactive substances may decompose explosively, particularly if confined this characteristic may be modified by the addition of diluents or by the use of appropriate packagings. Some self-reactive substances bum vigorously. Self-reactive substances include some of the following types of compounds aliphatic azo compounds (-C-N=N-C-) organic azides (-C-N3) diazonium salts (-CN2 Z ) N-nitroso compounds (-N-N=0) and aromatic sulphohydrazides (-SO2-N-NH2). ICAO 2-4.1.3.2, lATA 3.4.1.2.4... 

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