Absorb, neutralize and solidify liquid base (high pH) spills and leaks. Changes color during neutralization so you know when it's safe to handle and dispose. Sorbents Type: Base Neutralizing Powder; Absorbing Volume (Unit): 0.02 L to 4.5 L per 2 lbs of Powder; Material Absorbed: Base Chemicals; Capacity (Weight): 5 gal.