配方类型：	MISCELLANEOUS
配方说明：	To Purify Exhaust from Gasoline Engines (U.S. Patent 2,970,886)
配方组成：	Hydrocarbons from exhaust fumes are absorbed by passing through a vessel containing pellets (1/4---3/8-inch) made of Citric Acid/20-30 Ammonium sulfate/10-17 Potassium chloride/4-12 Calcium Chloride/8-12 Phenyl Salicylate/7-14 Molybdenum Oxide/48-55 Sodium Nitrate/3-7
配制方法：	Over a period of one year this was 89% effective.

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