... is a leading manufacture & exporter of Caustic Soda, mainly supply Caustic Soda Flakes, Caustic Soda Pearls, Caustic Soda Solid, purity 99%min, 98%min, 96%min, in ... when exposed to air.SPEC:Caustic Soda Pearls: 99%MinCaustic Soda Flakes: 96% 98% 99%MinCaustic Soda Solid: 96% 98% 99%Min NaOH (%)Na2CO3NaClFe2O3 96 ... .0%max0.08%max 0.008%max 99% Min0.5%max 0.03%max 0.005%max High Quality Caustic Soda 99%