| Item | Indicator | 
| Appearance | Red-brown stringy liquid | 
| Solubility | Soluble in hydrochloric acid and mud acid under normal temperature | 
| pH value | 7~8 | 
| Density | 1.0~1.1(25℃) | 
| Solidifying point | < -8 ?C | 
| Recommended working temperature | < 160?C | 
| 
				Corrosion speed 150℃,18%HCl+3%HF+2.0%SL-CR-H  | 
			≤35g/m2.h |