产品描述

Appearance  White crystalline powder
   

Identification   Pass test
   

Assay (C10H14N2Na2O8.2H2O)  99.0% ~ 101.0%
   

Chloride (Cl)  =< 0.01%
   

Sulphate (SO4)  =< 0.1%
   

pH (1%)  4.0- 5.0
   

Nitrilotriacetic acid  =< 0.1%
   

Calcium (Ca)  Negative
   

Ferrum (Fe)  =< 10 mg/kg
   

Lead (Pb)  =< 5 mg/kg
   

Arsenic (As)  =< 3 mg/kg
   

Mercury (Hg)       =< 1 mg/kg


Heavy metals (as Pb) =< 10 mg/kg