FloorFiller is powdered cellulose that has a neutral pH in the range of 5.0 to 7.5. It" s environmental friendly because it has no toxic or hazardous components and is so pure it can be used as a food ingredient. It mixes easily because the purified cellulose wets out extremely well and produces very little dusting while mixing. Qualities include: improved tensile strength; enhanced vertical hold and reduced cracking. Mix into resin and hardener; after blending to the desired thickness for your installation needs.