TOYNOL FS-640 is a nonionic de-airentrainer (100% active liquid; HLB: 8). TOYNOL FS-640 provides the right balance between de-aeration and long-term stability in PCE superplasticizing admixtures. This product will provide optimum air quality and enhanced workability. We recommend incorporating this additive at 0.2wt% to 1 wt% as delivered on PCE superplasticizing admixture. FDA and EPA clearances, solvent, and APE-free.