F681 is a widely used naphthalene superplasticizer defoamers, belonging silicon polyether defoamers, which features excellent anti-foaming suds. Model: F681 Appearance: milky white liquid Active content: 60% Viscosity: 800-2000mPa.s PH value: 6-7 Ionic: water-soluble nonionic instructions may appear after a heterogeneous phenomenon defoamers long-term placement Therefore, before defoamer Stir well, then follow the water reducer 1 ~ 3 ‰ (recommended dosage) is added directly to the water reducer homogeneous mixture is formed. Site first before using water reducer mixing 20 ~ 50s. Storage stability: up to 24 months in a sealed container. Packaging: 25 kg, 50 kg, 200 kg plastic drum. Note: This product is not classified as dangerous goods, stored in a cool dry place indoors, avoid sun exposure.