... 2≤2≤2Heavy metals ,μ g/g≤10≤10≤10Appearance of solution (1.0g,10ml water)colorless, almost clear colorless, ... In the medicine field, it can keep the balance of acid and alkali in the human body, and recover ... the normal operation of nerve. It can be used in the preventation ... , used as surface cleaning agent of metal 4 , used as cleaning agent of glass bottle 5 , It also can ...