Item | Index | measuring method |
Appearance | Brown viscous liquid | Eye measurement |
Active matter, % | 96 Min. | GB/T 5173-1995 |
Content of free oil, % | 2.0 max. | GB/T 8447-1995 3 |
Sulfuric acid, % | 1.5 max. | GB/T 8447-1995 2 |
Color, (Klett)Hazen(50g/L water solution) | 60 max. | GB/T 3143-1982 |