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试鎘剂2B学名为4-(4′-硝基萘重氮氨基)偶氮苯[4-(4′-nitronaphthalenediazoamino)azobenzene,cadion 2B]。Dwyer研究试鎘剂2B的酒精溶液在2N氢氧化钾溶液中与一般阳离子的反应,并推荐作鎘离子和镁离子的定性分析试剂。沈乃葵等曾观察试镉剂2B在不同酸碱性条件下对各种阳离子的反应,并认为试镉剂2B的丙酮溶液较其乙醇溶
Cadmium reagent 2B is named 4- (4’-nitronaphthalene diazepamino) azobenzene, cadion 2B]. Dwyer studied the reaction of cadmium 2B alcohol solution with common cations in 2N potassium hydroxide solution and recommended as a qualitative analytical reagent for cadmium and magnesium ions. Shen Naikui et al. Observed the reaction of cadmium reagent 2B to various cations under different pH conditions and considered that the acetone solution of reagent cadmium 2B was more soluble than ethanol