The HL-200F type is a hydrophilic fumed silica with a specific surface area of 200 m²/g. It is used in powdered foods as an anti-caking agent and flow aid.
| Nature | unit | Standard value | Inspection method |
| Specific Surface Area (BET) | m2/g | 200±20 | GB/T 20020 |
| Suspension pH (4%) |
| 3.9～4.5 | GB/T 20020 |
| Dry matter loss (dried at 105°C for 2 hours) | % | ≤2.0 | GB/T 20020 |
| Ignition loss (1000°C for 2 hours, based on the product after drying at 105°C for 2 hours) | mg/kg | ≤2.0 | GB/T 20020 |
| Sieve residue (45 μm) | % | ≤250 | GB/T 20020 |
| Silicon dioxide content (based on ignited product) | g/dm3 | ≥99.8 | GB/T 20020 |
| Tapped density (based on product dried at 105°C for 2 hours) | g/dm3 | 40～60 | GB/T 20020 |
