外观Appearance                          淡黄色至琥珀色透明粘稠液体
红外光谱鉴定Infrared spectrometry       和对照品匹配 
pH（5%水溶液）                          4 - 7 (5% in water) 
灼烧残渣Residue on ignition (Ash)       ≤1.0 % 
氯Chloride                              ≤0.05 % 
硫酸盐Sulfate                           ≤0.6 % 
铝Aluminum (Al)                         ≤0.0005 % 
磷Phosphorus (P)                        ≤0.0005 % 
铅Lead (Pb)                             ≤0.001 % 
铁Iron (Fe)                             ≤0.001 % 
铜Copper (Cu)                           ≤0.0005 % 
锌Zinc (Zn)                             ≤0.0005 % 
钙Calcium (Ca)                          ≤0.0005 % 
镁Magnesium (Mg)                        ≤0.0005 % 
钠Sodium (Na)                           ≤0.5 % 
钾Potassium (K)                         ≤0.005 % 
铵盐Ammonia (NH4)                       ≤0.05 %