用层析法检验DBC-偶氮氯膦，纯产品只有一个单一的蓝色斑点。
The purity of DBC-chlorophosphonazo was checked by chromatography and a single blue band was obtained for the pure product.
用层析法检验DBC-偶氮氯膦，纯产品只有一个单一的蓝色斑点。
The purity of DBC-chlorophosphonazo was checked by chromatography and a single blue band was obtained for the pure product.
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