... and ISO9001, 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 high ... deliquescence 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% Min1.2 ...