Oare powders

Oare Powders. Expls manufd in 1898 by the Cotton Powder Co, Ltd, of Faversham (Kent), Engl. They originally contained, as the main ingredients, Chile saltpeter (Na nitrate) and Dinitrobenzene, but later the latter ingredient was replaced by TNT Ref Daniel (1902), 587... 

Owing to the highly explosive nature of the diazobenzene nitrate, its preparation should never be undertaken except the compound is wanted for research or some special purpose. 20 gms. of aniline are placed in a beaker, well cooled, and boiled-out nitric acid, previously diluted with half its volume of water, oarefully added till the mixture sets to a thick crystalline paste—aniline nitrate. The crystalline mass is filtered off at the pump, and washed with a little cold water. 5 gms. of the moist salt are finely powdered and placed in a small flask with enough water just to cover the substance. The flask is now well cooled in ice-water, and nitrous fumes (for preparation, see p. 513) are led in with frequent agitation until all the aniline nitrate has disappeared. At no time must the temperature of the flask rise above 10°. Should there not be sufficient water to keep all the diazobenzene nitrate formed in solution, its crystalline form will easily enable it to be distinguished from the aniline salt. When the reaction is finished the contents of the flask are poured into 3 times their volume of absolute alcohol, and ether is added to this mixture as long as crystals separate. If too much water has been added to the aniline nitrate from the beginning, a thick aqueous solution of diazobenzene nitrate separates out in place of the crystals. If this occurs, the ether-alcohol is decanted off, and the residue redissolved in absolute alcohol, and reprecipitated with ether. On no account must... 

Commercial adjuvants were tested for /feSNPV activity improvement and Coax and Gustoi did not provide UV protection for the zSNPV baculovirus (58) (Table 2). They compared inactivation of a standard acetone-dried preparation of /feSNPV diseased larvae mixed with 20% lactose (IMC-01) a commercial wettable powder (SAN-240-WP, Sandoz), and a water-based formulation (SAN-24S0-WDC, Sandoz). They added a liquid-flowable material from Sandoz-Wander Inc., in the final spray-tank, at 10% W/V. San-240-WP formulation without adjuvant protected. zSNPV activity similarly dian die formulations with adjuvants, after 4 h exposure to simulated solar radiation (98.4, 113.1 and 108.8 % OAR, respectively whereas IMC-01 and no-adjuvant SAN-240-WDC lost significantly activity (9.1 and 39.0 % OAR, respectively). The use of a liquid-flowable material enhanced the //zSNPV activity 2-11 times after artificial sunlight exposure (50) (Table 4). 

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