1. Appearance: Pale yellow free-flowing powder
2. Moisture: ≤12.0%
3. Water-insoluble content: ≤12.0%
4. Base fluid viscosity (0.6% base fluid, 25°C): ≥50 mPa·s
5. pH (1% aqueous solution): 6.5~8.0
6. Ignition residue: ≤1.5%
7. Crosslinking compatibility: Can crosslink with organic boron crosslinker at room temperature; gel temperature resistance ≤90°C