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新苯并噻唑偶氮试剂——1-羟基-2-(6-溴-2-苯并噻唑偶氮)-8-氨基-3,6-萘二磺酸的合成方法简单,提纯容易,产率达73%。试剂的 pK_(a_3)为6.75。是一个变色敏锐的酸碱指示剂,也可用作 Cu~(2+)、Co~(2+)、Ni~(2+)等金属离子的显色剂。
The new benzothiazole azo reagent - 1-hydroxy-2- (6-bromo-2-benzothiazolylazo) -8-amino-3,6-naphthalene disulfonic acid synthesis method is simple, easy to produce Rate of 73%. The reagent has a pK_ (a_3) of 6.75. Is a sharp acid and alkali color change indicator, can also be used as Cu ~ (2 +), Co ~ (2 +), Ni ~ (2+) and other metal ion developer.