... . widely used in metallurgy,petroleum,chemicals,textile,paper making,printing and dyeing. Items Specification Flakes/Solid Pearls NaOH (%min)9698999699Na2CO3 (%max ... used in metallurgy,petroleum,chemicals,textile,paper making,printing and dyeing,soapindustry, pharmacy and food industry,metal hardwares etc. Packing: Flakes/Pearls: 1 ...