Tempe during

If eighteen nitrating units are used, the compn of the nitrating mixts and the temp during the process will be as shown in Table 5. The multiple unit arrangement is shown in Fig 10... 

Note Cycle acid , which is weaker than mixed acid is used for starting the nitration in order not to allow the reaction to become too violent and to be able to more easily control the temp during the early stages of nitration. The compn of the "cycle acid is similar to that used in the mononitration of toluene, such as H2SO4 53 5, HNO3 7.2, Nitroso 15 0 nitro bodies 1.0%, which was listed by Clift Fedoroff in "A Manual for Explosives Laboratories , Vol 1, Chap III, p 2(1942)... 

It has been suggested that complete purification of the TNT is not really necessary in some cases, especially with modern bomb assembly and sealing techniques and the availability of additives to prevent exudation of cast TNT mixts (Ref 6). This proposal merits serious consideration in the light of the problems and energy loss involved in purification as discussed above. The use of low temp during the initial stages of nitration promises to substantially reduce formation of the meta isomers, which will correspondingly facilitate the purification step. This development is discussed under Preparation . Other refs to TNT purification are cited under "Refs (Refs 5,7,10 12)... 

A novel method for estimating hot spot temperatures. An interesting approach towards estimating the hot spot temp during an impact test has been presented by Bob ole v Bolkhovi-tinov(Ref 5). They suggest that in an impact test in which the test sample is.unconfined some of the sample melts because of plastic... 

N 21-27% orn-red prisms (from ale), mp 197° (dec) sol in acids si sol in cold alkalies insol in w. It was ptepd by treating N,N -Di-p-tolyl-guanidine with nitric acid (dl.5) and avoiding any rise in temp during nitration ( Refs 5 6)... 

A soln. of (2,3-dimethoxyphenyl)acetaldoxime (prepn. s. 65) in glacial acetic acid dropped at room temp., during 2 hrs., into a mixture of glacial acetic acid and coned. H2S04 containing Pd, and hydrogenated —> 2,3-dimethoxy-/ -phenylethylamine. Y 80%.—Reduction with Na,Hg gave a yield of 40%. (A. Lindenmann, Helv. 32, 69 (1949).)... 

Figure 1. Solubility of sulfur. Crystalline sulfur in 80/100 bitumen. OA = forecast curve without solubility. BA = curve at 150°C (emulsification temp) during 5 CA = curve at 180°C (emulsification temp) during 5. OB = solubility after heating at 150°C — 14%. OC = solubility after heating at 180°C —18%.

The two reactnts initially in diethyl ether at ambient temp.during Ih followed by evapn. of solvent and reflusing of the residual material (6h) in aqueuous ethanol to give 7-diethylamino-3-cyanocoumarin. 

Diphenylketene added dropwise at -50° to a soln. of N,N-diethylphenyl-ethynylamine in dry ether, allowed to stand 2 hrs. at - 50°, then allowed to warm to room temp, during ca. 

Acetyl-a-(2,4,6-trimethylbenzenesulfonyl)diazomethane in methanol shaken 0.5 hr. with triethylamine, treated with 1 mole triphenylphosphine in ether, more methanol added if necessary to form a soln., then the solvents allowed to evaporate at room temp, during ca. 5 days 2,4,6-trimethylbenzenesulfonylformalde-hyde hydrazone. Y 12%, - This is a previously unknown class of compounds. F. e. s. D. Hodson, G. Holt, and D. K. Wall, Soc. (C) 1968, 2201. 

Ethyl chloroformate added dropwise at room temp, during 5 min. to a soln. of 3-(2-carboxyethyl)-6-chloro-4-phenyl-l,2,3,4-tetrahydroquinazoline in dry dioxane containing triethylamine, and allowed to stand an additional 15 min. at room temp. 8 - chloro -1,5 - methano - 6- phenyl -3,4,5,6- tetrahydro -1,5- benzodiazocin-... 

A soln. of S2CI2 in CCI4 added at room temp, during 2 hrs. under N2 to anisole and Fe-powder protected from light below 6000 A, and stirred ca. 1 hr. until HCl-evolution is complete -> bis(4-methoxyphenyl) sulfide. Y 74%. F. e., also with FeClg and sulfur didiloride s. T. Fujisawa et al., Tetrah. Let. 1968, 4533,... 

Features Improves hiding power at lower film thicknesses withstands high processing temps, during extrusion Properties Eree-flowing powd. 55% act. 

Methyl 2-methylsulfinylbenzoate added to a mixture of 85%-phosphoric acid and phosphorus pentoxide, heated to 80°, NaN3 added at this temp, during 2 hrs. with vigorous stirring, which is continued 4 hrs. at the same temp. 1-methyl-3-oxobenz[d]isothia(I 0zol-3-one 1-oxide. Y 85%. F. e. s. P. Stoss and G. Satzin-ger, Ang. Ch. 83, 83 (1971). 

Aq. SO -HgOg added dropwise with stirring at room temp, during 0.5 hr. to cyclododecylamine, Na - tungstate, and Trilon B, stirred 10 hrs. 

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