Inspection Item  | Indication Range  | Indication Range  | 
Apperance  | Yellow to Reddish-brown clear solution  | Yellow powder  | 
Solid content %  | ≥40.0  | ≥90.0  | 
Density g/cm³(20℃)  | ≥1.20  | ---  | 
PH(10G/L in solution)  | 8.5-10.5  | 7.5-10.5  | 
Limiting Viscosity dl/g(30℃)  | 0.040-0.070  | 0.035-0.065  |