鉴别                            显钾盐和乳酸盐的鉴别反应
色度                            ≤100APHA
含量                            60-61%
立体化学纯度                    ≥95%
PH(1mol/L溶液)                  6.5-7.5
密度（20℃）                     1.32-1.35g/ml
铁盐                            ≤0.001%
氯化物                          ≤0.05%
钙盐                            ≤0.002%
硫酸盐                          ≤0.005%
重金属（以Pb计）               ≤0.001%
砷盐                             ≤0.0002%
还原糖                           通过FCC实验
草酸盐.硫酸盐.酒石酸盐.柠檬酸盐  通过FCC实验
氰化物                           ≤0.00005%
甲醇/甲酯                        ≤0.025%
铅                               ≤0.0005%
钠盐                             ≤0.1%