Hydrofluorosilicic Acid (25% OR LESS) (16961-83-4)
Colorless to yellow liquid with a slightly acrid odor.
Apply FAST-ACT powder to fully cover liquid spill and absorb excess liquid.
Adsorbed and neutralized, defluorination and acid (HF) formation and its neutralization and adsorbed.
Primary Mechanism Type
Adsorption and Neutralization
MgO, TiO2, Mg(OH)2, and neutralized acid.
Reaction Rate (Slower to Faster)
Reaction Rate: 6
FAST-ACT Application Methods:
A. For trace liquid chemical contamination, apply FAST-ACT Powder from either a shaker or pail to the surface to fully absorb the compounds. Apply powder forming a ring around the hazard and then shake the powder directly onto hazard to thoroughly cover the liquid. Carefully Agitate all the powder to ensure all liquid has been adsorbed.
B. Alternatively, for trace contamination on a surface, you can utilize a FAST-ACT Decon Mitt. Tear packet at the notch and remove the FAST-ACT Decon Mitt. Unfold mitt and insert hand, tightening the strap. Decontaminate surface by rubbing with pad side to remove liquid contamination. Shake and pat the mitt to release powder from the mitt to the surface. If liquid contamination is still present or suspected, repeat process with a new FAST-ACT Decon Mitt.
C. For liquid contamination, directly apply the FAST-ACT Powder from a Shaker or Pail to the liquid to fully absorb the compound ensuring no liquid chemical remains. Apply powder forming a ring around the hazard and then shake the powder directly onto hazard to thoroughly cover the liquid. Carefully agitate all the powder to ensure all liquid has been adsorbed.
D. For vapor contamination, utilize a FAST-ACT Pressurized Cylinder to dispense the product into the air space: Shake the FAST-ACT Pressurized Cylinder to loosen the contents. Pull the ring pin. Squeeze the lever and shake the cylinder in up and down motion to ensure maximum discharge of the FAST-ACT powder. Aim the hose and mist all powder in the direction of hazard. If liquid hazard is also present, sweep hose side to side to ensure complete coverage of liquid hazard.
E. Bulk acid neutralization. Since acid neutralizations are exothermic, you want the acid to be as shallow as possible. This helps dissipate the heat. Do not neutralize an acid in a container or closed container.