Solids containing 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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Solids containing flammable liquid, n.o.s. 4.1 Flamm. Solid n... 

Drums containing flammable liquids are preferably stored outside, so that any flammable vapour can readily disperse. Similar considerations may apply to the dispersion of any vapour/fumes from drums of toxic liquids or solids. In some cases weather protection is provided by a roof. 

Small concentrations of volatile components in a liquid mixture may accumulate in the vapor space of a container over time and appreciably reduce the flash point relative to the reported closed-cup value. This may be the result of degassing, chemical reaction or other mechanism. An example is bitumen [162]. Similarly, if a tank truck is not cleaned between deliveries of gasoline and a high flash point liquid such as kerosene or diesel oil, the mixture might generate a flammable atmosphere both in the tmck tank and the receiving tank. Contamination at the thousand ppm level may create hazards (5-1.4.3 and 5-2.5.4). Solids containing upward of about 0.2 wt% flammable solvent need to be evaluated for flammable vapor formation in containers (6-1.3.2). 

Application of a welding torch or burner to a tank or drum containing flammable material, either as solid, liquid or vapour or their residues, can cause an explosion. Such vessels, although apparently empty , may have residue in the bottom and/or in seams and crevices. 

Commercial stick P was purified by dipping it into CS2 until the outer oxide layer became detached, and then transferring it under a C02 atmosphere to the reaction vessel where it was dried in vacuo. In a typical experiment, trifluoroiodomethane (2.94 g, 15 mmol) was sealed in vacuo in a C arius tube containing purified P (3 g. 97 mmol). There was no reaction after 24h at 100 C. but after 48 h at 220 C the tube contained a red solid and a liquid less volatile than tris(trifluoronicthyl)phosphane. Fractionation gave unchanged C F31 (30%), spontaneously flammable tris(trifluoromcthyl)phosphane [yield. 0.7g (84%)]. iodobis(trifluoromethyl)phosphanc [yield 0.11 g (15%)]. bp 72 78 C. and diiodo(trilluoromethyl)phos-phane lyield 0.05 bp 69 C/29 Tori. Yields are based on the amount of trifluoroiodomethane... 

FENCHLOROPHOS or FEN-CHLORPHOS (299-84-3) CjHaCLOjPS (CH30)2PS0CjH2C1j Noncombustible solid. Commercial liquid formulations may contain flammable organic carrier solvents. Tenqwratures above 300°F/149°C may cause explosive decomposition and release of toxic HCl, phosphorus oxides, sulfur oxides. Contact with strong oxidizers may cause fire and explosions. Incompatible with antimony(V) pentafluoride, lead diacetate, magnesium, silver nitrate. Attacks some plastics, rubber, and coatings. 

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