Carbopol U20

Test Specification Results Appearance White crystalline Powder Conforms Identification HPLC conform Conforms Loss on drying ≤0.5% 0.24% Viscosity (20r/min, 25’C, mPa.s) 0.2% aqueous solution 0.5% aqueous solution 19,000-35,000 40,000-70,000 23250 60000 Residue on ignition ≤0.2% 0.06% Solution clarity (420nm, %) 0.2% aqueous solution 85min 94 Residual benzene 0.5% max 0.31% Residual acrylic acid 0.25% max 0.092% Packing density (g/100ml) 21.0-27.0 Conforms Heavy metals 10ppm max Conforms Total impurities(HPLC) ≤ 1.0% Conforms