urbaf2

260 CHEMISTRY AND TECHNOLOGY OF EXPLOSIVES

TABLE 44

HEATS OF COMBUSTION AND HEATS OF FORMATION OF BENZENE NITRO DERIVATIVES ACCORDING

Nitro derivative of benzene

Nitrobenzene

o- Dinitrobenzene m- Dinitrobenzene

p- Dinitrobenzene sym-Trinitrobenzene

1,2,4-Trinitrobenzene

TO SEVERAL AUTHORS (1) -(5)

Heat of combustion (at constant Heat of formation volume), kcal/mole (for amorphous carbon), kcal/mole

739.9(1)

702.6(1) 699.4(1)

692.5(1) 655.6(1) 666.1(1)

675.9(1)

+13.1(1) + 3.9(4) + 6.0(5) +16.0(l) +19.2(t) +24.2(2) + 8.6(4) +26.1(1) +21.1(1) +25.8(2) +23.0(3) +10.8(1)

(1) Gamer and Abemethy [50]. (2) Kast [3a]. (3) Berthlot and Matignon [63]. (4) Swarts [64]. (5) Chem. Techn. Reichsanstalt [65].

TABLE 45

HEATS OF NITRATION OF BENZENE AND ITS NITRO DERIVATIVES

Starting product

Benzene Nitrobenzene Nitrobenzene Nitrobenzene m- Dinitrobenzene o- Dinitrobenzene p- Dinitrobenzene

Nitration product

Nitrobenzene m- Dinitrobenzene o- Dinitrobenzene p- Dinitrobenzene sym-Trinitrobenzene 1,2,4-Trinitrobenzene 1,2,4-Trinitrobenzene

Heat of reaction kcal/mole

+27.0 +25.6 +22.4 +32.5 +21.4 +14.3 + 4.2