Ignition igniters

Bleaching powder Sodium chlorite Sodium chlorate Potassium chlorate Barium chlorate Silver chlorate Ignition Ignition Ignition Ignition Ignition Ignition Sodium chromate Potassium chromate Ammonium dichromate Sodium dichromate Potassium dichromate Barium peroxide Smoke Smoke Smoke Smoke Smoke Smoke to... 

If the temperature of a molten lead—calcium (tin)—aluminum ahoy is not kept sufficiently high, finely divided aluminum particles may precipitate and float to the top of the melt. These may become mixed with oxides of lead in the dross. The finely divided aluminum particles can react violently with the oxides in the dross if ignited. Ignition can occur if attempts are made to melt or bum the dross away from areas of buildup with a torch. The oxides in the dross can supply oxygen for the combustion of aluminum once ignited. 

The exponential dependence of the evolution of heat upon temp, besides rendering eq (1) nonlinear and hence difficult to solve, accounts for the existence of concepts such as ignition, ignition temp, induction period, limits of inflammability and, indeed, of the concept of "explosion itself, which. can be defined no more rigorously than by the requirement that the reaction rate become sufficiently high. This fundamental point is implied in every theoretical treatment of thermal expln, but it has been brought out explicitly in Russian scientific literature (Refs 5, 6, 9, 11 14). 

Weigh on a rough balance in a tared platinum dish a 25 g sample and moisten it with a little isopropanol. Heat the dish, under the hood, with the colorless flame of a Bunsen burner until all the TNT is melted. Care must be taken not to heat platinum in a yellow flame as the incandescent carbon of such a flame attacks platinum, forming carbide which is extremely brittle. If the material has not already ignited, ignite it,... 

Ambient pressure Min Ignition Ignition delay (kg/cm2) voltage (microsec)... 

Spontaneous ignition ignition of a fuel, such as coal, under normal atmospheric conditions usually induced by climatic conditions. 

Ignitability (time to ignition (tig), critical mass loss (ML) rate or heat flux for ignition, ignition temperature (7,), etc.)... 

Residue on Ignition Ignite 1 g as directed in Method I under Residue on Ignition (Sulfated Ash), Appendix IIC. 

Residue on Ignition Determine as directed under Residue on Ignition, igniting a 1-g sample. 

Fluoride Determine as directed under Fluoride Limit Test, Appendix TUB, using a 1.0-g sample, accurately weighed. Lead Determine as directed under Lead Limit Test, Appendix IIIB, using a solution of 1 g of sample in 15 mL of 2.7 N hydrochloric acid, and 5 p,g of lead (Pb) ion in the control. Loss on Ignition Ignite 1 g of sample to constant weight in a tared platinum crucible at 1100° 50°. 

Loss on Ignition Ignite about 3 g of sample, accurately weighed, preferably in a muffle furnace, at 800° to 825° to constant weight. 

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