... 4.Punctal shipment & Characteristic: White granular (dense),white crystalline powder(light). anhydrous substance,easily Soluble in water,presenting alkaline solution,absorbing ... volume (dry basis of the mass fraction of Na2CO3)% ≥99.298.898.0NaCl(dry basis of the mass fraction of ... food stuff, glass, enamel, medication,paper-making and other chemical. 99.2% Soda Ash Dense (Na2CO3) manufacturer