论文部分内容阅读
五氯酚及其盐类(主要为钠盐)居美国用量最大杀虫剂的第二位,1978年销售总量为21400941.61 kg,主要用于木材防腐工业。五氯酚的制造过程有酚的直接液相氯化法和六氯苯碱性水解法两种。两种方法生产的商品五氯酚均含有低于5%的不溶于碱的杂质,主要为氯代二(口恶)英、氧芴和羟基氯二苯醚(二(口恶)英前体)。一般在商品五氯酚中发现的氯代二(口恶)英为六氯-(HCDD)、七氯-(HeCDD)、八氯等不同取代的二苯基对二(口恶)英(OCDD)及分别联接有
Pentachlorophenol and its salts (mainly sodium) ranked the second largest pesticide in the United States with a total sales of 21400941.61 kg in 1978, mainly for the wood preservative industry. The manufacturing process of pentachlorophenol has two kinds of direct liquid phase chlorination of phenol and basic hydrolysis of hexachlorobenzene. Both products produced pentachlorophenol containing less than 5% alkali-insoluble impurities, mainly chlorinated dioxins, fluorene and hydroxychlorodiphenyl ether (dioxin) ). Chlorinated dioxins, commonly found in commercial pentachlorophenols, are the different substituted diphenylsulfonium (OCDD), hexachloro- (HeCDD) ) And were connected with