... 1.Caustic Soda, akali 99% & 96% 2.Properties: Flakes, Solid, Pearls 3.Used in chemical,metallurgy,textile,medicine,pesticid. Specification of Caustic Soda: Caustic Soda NaOHNa2CO3 NaClFe2O3 99% Flakes 99. ... % Max 0.008% Max99% Solid 99.30% Min0.5% Max0.03% Max0.005% Max99% Pearls 99.35% Min0.5% Max0.03% ... with many other uses in the chemical processing industry. Caustic soda-99/96 Flakes Solid Pearls