尿素

质量指标

Specification

USP32

FCCVII

含量（以干基记），w%

Content , w/%  

99.1-100.5

99.0-100.5

硫酸盐，w%               ≤ 

Sulfate, w/%                    ≤

0.01

0.01

乙醇不溶物，w%           ≤ 

Alcohol-insoluble residue,w%      ≤         

0.04

0.04

氯化物（以CL计），w%   ≤

Chlorides (Cl) ,w/%              ≤

0.007

0.007

灼烧残渣，w%             ≤

Ignition Residue, w/%             ≤

0.1

0.1

铅，w%                   ≤

Lead (Pb) ,mg/kg                ≤

————

0.0005

干燥减量，w%             ≤   

Loss on Drying, w/%             ≤

————

1.0

重金属（以Pb计），w%  ≤

Heavy melt (Pb) ,w%             ≤

0.002

————