 
     
                
| Index item | Index | 
| Total alkalinity (based on NH4HCO3), % | 99.0~100.5 | 
| Chloride (based on C1) % | ≤0.007 | 
| Sulfur compound (based on SO4) % | ≤0.003 | 
| Nonvolatile matter % | ≤0.05 | 
| Inorganic arsenic (based on As)/(mg/kg) | ≤2 | 
| Plumbum (Pb)/(mg/kg) | ≤2 | 
| Sulfonate (based on SDBS) (mg/kg) | ≤10 |