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“520”是利用棉籽榨油并生产糠醛所得残渣,再加压水解提取乙酰丙酸后,用硝酸处理并加适量氨水中和而得.据文献报导,棉籽壳经硝酸处理后有效部分是醌硝基多羧酸.天津市合成化学厂曾利用该厂糠醛生产的下脚料,研制成一种新型植物激素——“津451”.“津451”的主要活性物为硝基醌羧酸,辅助活性物为木素衍生物、丁二酸、顺丁烯二酸、硝基酚等.应用于水稻、小麦和玉米等粮食作物和苤兰、莴笋、菜瓜、黄瓜等20多种蔬菜都得到不同程度的增产效果.
“520” is the use of cottonseed oil and produce furfural residue, and then hydrolyzed hydrolysis of levulinic acid, with nitric acid treatment and add the appropriate amount of ammonia and derived.According to the literature, after cottonseed hulls treated by nitric acid is quinone Nitro polycarboxylic acid. Tianjin Synthetic Chemical Plant had used the plant waste furfural production, developed into a new plant hormone - “Tianjin 451.” Tianjin 451 "of the main active nitrone quinone carboxylic acid, auxiliary Active substances are lignin derivatives, succinic acid, maleic acid, nitrophenol, etc. There are more than 20 kinds of vegetables used in food crops such as rice, wheat and corn and other vegetables such as radish, lettuce, cucumber and cucumber The degree of stimulation effect.