车用尿素质量标准

项目指标要求折光率n/。1.38171.3840不溶物/(mg/kg)≤20氯化物(C1)/(mg/g)≤0.2碱度（以H3计），/%0.2磷酸盐(P04)/(g/kg)0.5碳酸盐（以C02计），/%≤0.2钠a)/(mg/kg)≤0.5镁(Mg)/(mg/kg)≤0.5铝(A1)/(g/kg)≤0.5钾(K)/(mg/kg)≤0.5钙(Ca)/(mg/kg)≤0.5铬(Cr)/(g/kg)≤0.2铁(Fe)/(mg/kg)≤0.5镍Ni)/(g/kg)≤0.2铜(Cu)/(g/kg)≤0.2锌（亿n)/(mg/kg)≤0.2甲醛(HCHO)/(mg/kg)≤9缩二脲(C2H5N302),m/%≤0.3