... , petroleum, chemicals, textile, paper making. Caustic Soda Pearls:Specification: Appearance: White flakes,pearls or solid forms. Application: widely used in metallurgy ... industry, pharmacy and food industry,metal hardwares etc.Packing: Flakes/Pearls: 1)in 25kg p.w.bags..25MT/20'FCL. ... solid: in 200kg/400kg iron drums. Items Specification Flakes/Solid Pearls NaOH (%min) 96 98 99 96 99 Na2CO3 (%max) ...