Temperatures of Explosion

In calculating the heat of explosion we assumed that the temperature of explosion Tt was 4000 K. If this assumption was correct then the heat liberated by the explosion at 4000 K should equal 1149 kJ mol-1. The calculated value for the heat liberated, where the initial temperature is taken as 300 K, is presented in Equation 6.12. The values for the mean molar heat capacities at constant volume can be found in Table 5.15. [Pg.110]

The calculated heat liberated at 4000 K is 1077 kj mol -1, which is lower than the original value of 1149 kj mol-1. A higher temperature of explosion should now be taken and the cycle repeated. Eventually this would lead to an answer of 4255 K for the temperature of explosion. [Pg.110]

Similar calculations can be carried out on mixed explosives and on propellants if the composite formula is known for the materials. The use of the water-gas equilibrium will produce a result that is a closer approximation to the experimentally-derived figure than the Kistiakowsky-Wilson and the Springall Roberts approaches. [Pg.110]

The method used above for calculating the temperature and heat of explosion for the water-gas equilibrium can also be applied to other [Pg.110]

In calculating the heat of explosion we assumed that the temperature of explosion was 4000 K. If this assumption was correct [Pg.123]

The method used above for calculating the temperature and heat of explosion for the water-gas equilibrium can also be applied to other equilibrium equations. Examples of such equilibria which may become important during an explosive reaction are presented in Reaction 6.6. [Pg.124]

The surface temperature of explosion-proof enclosures cannot exceed that of high-temperature devices, Equipment can be tested by nationally recognized testing laboratories and given one of 14 T ratings, as indicated in Table 17-2. This equipment may exceed the 80 percent rule."... [Pg.521]

In comparison with nitroglycerine nitro compounds give a powder with a lower temperature of explosion that produces less erosion and flash. Powders containing nitro compounds with nitroglycerine were later adopted in the USSR... [Pg.882]

The temperature of explosive decomposition of trinitrotoluene very much depends on the compound purity. The table below shows the influence of various impurities on this compound. [Pg.296]

Heats of Formation and of Explosion (33-41) Temperature of Explosion (41-8) Pressure of Explosion (49-58) Power by Trauzl Test (58-63) Brisance by Crusher Test (Stauchapparat) (64-5) Testing of Blasting Caps by Lead Plate Test (155-57) Testing of Blasting Caps by Pendulum Apparatus (157-59) Determination of Burning Time of Safety Fuses (163-65) ... [Pg.311]

Hayes (1938) Measurement of Grains (pp 28-29) Compression Test (29) Stability by Kl-Starch Paper Test, 134.5°C Heat Test, 120°C Heat Test, 65.5°C Surveillance Test and Observation Test (29-30) Ballistic Test (30-31) Heat of Explosion at Constant Pressure (51-2) Volume of Gas (52-3) Heat of Explosion at Constant Volume (54-5) Potential (55) Temperature of Explosion (55-7) Pressure of Explosion (57-61) Heat of Explosion of Propellants (62-4) Ignition of Propellants (68-70) Mode and Rate of Burning (70-71) Velocity Measurements by Le Boulange, Aberdeen, and Solenoid Chronographs (84-92) Pressure Measurements by Crusher and Piezoelectric Gages (92-6)... [Pg.311]

Abel (64), of Burlot-Malsallez (65), and of Bichel Mettegang (66-9)- Also are described Calorimeters of Landrieu-Malsallez and Gas Calorimeter (69-70) Determination of Temperature of Explosion (70-1) Determination of Ignition Temperature (72-3 108-... [Pg.312]

Taylor (1952), Measurement of Detonation by Dautriche (pp 24-28) and by Rapid-Photography Methods (28-32) Heat of Explosion by Calorimetric Bomb (40-2) Temperature of Explosion (43-7) Power or Strength of High Explosives by Trauzl Lead Block Test, Ballistic Mortar Test and pendulum Test (185-86)... [Pg.314]

Accurate determination of Tv often involves a series of tedious calculations of the equilibrium composition of the explosion products at several temperatures. Von Stein Alster of PicArsn presented a new method which offers a simple general treatment for arriving at equilibrium compositions for C-H-N-0 explosives of any oxygen balance. The novel feature of this method which is described in PATR 2501 (Ref 40a) is that the temperature of explosion can be determined directly from the known heat of... [Pg.374]

Heats of combstn of 32 expls) PicArsn Translation No 23(1959) by G. Loehr 35a) P. Tavernier, MP 37, 225-68(1955) (Temperature of explosion, calorimetric value, force constant of propellants and coefficient of isentropic expansion in the gun barrel) [Transl issued by Tech Info Library Services, Ministry of Supply (GtBrit), Feb 1959 (TlL/T.4837)] 36) C.G. Dunkle s Lecture at Picatinny Arsenal, delivered on Dec 13, 1955, entitled "Introduction to Theory of Detonation of Explosives , pp 10-11 (Heats of deton expln) 37) G.R. Handrick,... [Pg.382]

Dunkle (Ref 40) points out that total pressure is also known as stagnation pressure and is equal to the sum of static pressure and dynamic pressure. Both of these are exerted by gases. More detailed explanation is given in Ref 40, p 32. He also states that in the reaction between A1 K chlorate, mentioned above, the products formed at the temperature of explosion are gaseous KC1, AlO, A O and oxygen. The A Oj does not form until the products cool... [Pg.483]

Methods of calculating temperatures of explosion of mining explosives are described in detail, in Vol 3 of Encycl (Ref 51)... [Pg.592]

Ethyl Nitrate 2572, Diazodinitrophenol 3087 and 1,1-Dinitropropane 2543 C Note In the report (as well as in many other papers and reports) these temps are called "explosion temperatures . As this term can be confused with temp to which.an expl must be heated to induce expln, we prefer "temperature of explosion when it. concerns "temperature developed on explosion ... [Pg.592]

Hamilton patented in England in 1896 the addition of up to 15% of urea oxalate in order to lower the temperature of explosion of dynamites and smokeless powders Ref Daniel (1902), 367... [Pg.10]

Picric Acid, abbrd PA or Trinitrophenol (TNPh)], also called in Ital Melinita o Pertita, HO.C6H2(N02)3. Its prepn, props, uses and analytical procedures are described by Belgrano (Ref 17, pp 281—87). Its props are Density (max) 1.68, Explosion Temperature 310°, Temperature of Explosion 3200°, Heat of Explosion 1040kcal/kg, Volume of gas at 0°... [Pg.404]

Azotidrato d argento (Silver Azide—SA) o Acido d argento, AgN 3, is described in Belgrano (Ref 31, pp 449—51). Trauzl value for 2g sample 22.5cc, Detonation Velocity 5700m/sec, Temperature of Explosion 3545° Detonation Temperature 297° (Ref 31, pp 447 451). [Pg.408]

Temperature of Explosive Decomposition 300° Temperature of Explosion 2700° Heat of Explosion 740cal/g, Specific Pressure 3250 atm/kg Volume of Gas Developed on Explosion, calcd at STP 325 liters/kg Trauzl Test value 30-40cc Impact Sensitivity with 2kg Weight 70cm and Velocity of Detonation 1400m/sec (See also Ref 28, p 345)... [Pg.437]

Vieille expressed the opinion that nitroguanidine is less erosive than other explosives of the same power due to its low temperature of explosion. On the basis of experiments with a manometric bomb Patart [55] calculated the following data for nitroguanidine as an explosive ... [Pg.30]

Such a low temperature of explosion was very surprising and the author appears to have been in doubt as to its validity. Indeed, Muraour and Aunis [56] have shown that the temperature of explosion of nitroguanidine may, in fact, be much higher. They pointed out that nitroguanidine ignites with difficulty and undergoes incomplete explosive decomposition. That is why the explosion temperature, as reported by Patart, is so low. [Pg.30]

The explosive power of tetryl at a loading density of 0.3, was compared with that of other explosives in a manometric bomb by Koehler [51] who determined the following pressure values from which the temperatures of explosion have been computed ... [Pg.54]

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