Firelighters, solid with flammable liquid

Firelighters, solid with flammable liquid, 4.1 Flammable solid, inorganic, n.o.s., 4.1, 6.1,8 Flammable solid, n.o.s., 4.1, 5.1 Flammable solid, organic molten, n.o.s., 4.1 Flammable solid, organic, n.o.s., 4.1, 6.1, 8 Musk xylene, 4.1 Self-reactive liquid type B, C, D, E, F, 4.1 Self-reactive liquid type B, C, D, E, F, temperature controlled, 4.1 Self-reactive solid type B, C, D, E, F, 4.1 Self-reactive solid type B, C, D, E, F, temperature controlled, 4.1 Solids containing flammable liquid, n.o.s., 4.1 

According to regulatory definitions, flammable solids include combustible, self-reactive, and desensitized explosive solids. In general, flammable solids decompose at elevated temperatures or, in fire, bum vigorously, decompose in contact with acids or alkalis, and can produce toxic reaction products. 

Many solids combust (oxidize with atmospheric oxygen) when exposed to an ignition source (spark, match, flame, or friction) examples include phosphorous trioxide, straw, and sulphur. The strength of the reaction is determined in part by the surface area exposed to the atmosphere. The more finely divided the substance, as in a powder or dust, the more surface is exposed and the quicker the reaction will proliferate. At some point the solid may be so finely divided that its reactivity increases to the point where it no longer needs an ignition source and ignites by itself spontaneous combustion) or even explodes. If moisture plays a major role in the reaction, the material may also be dangerous when wet  

Included in the definition of flammable solids are materials such as soil, sand, production material contaminated with flammable liquids, and firelighters combustible solids (e.g., wood, peat, cellular urea-formaldehyde resin, and compacted sawdust) that have been impregnated with a flammable liquid (usually kerosene or white spirit). When ignited, the liquid bums and propagates heat and flame to ignite, in time, the relatively less combustible solid. Firelighters are used as heat sources or to initiate the combustion of another material like coal. 

Self-reactive and related solids and liquids are those that will undergo an exothermic decomposition reaction without the need for oxygen, but without the force of an explosive. They may achieve self-accelerating decomposition 

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Firelighters, Solid A porous solid, e.g. cellular urea-formaldehyde resin, compacted wood shavings, etc., impregnated with flammable liquid, usually white spirit or kerosene, and designed to burn in a controlled manner. When heated, evolves flammable vapours. IMO 4145... 

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