caustic soda: 1.96% ,98% and 99% 2.flake ,pearl and solid 3.high quality 4.FIC brand Caustic ... Soda: Character & Purpos white flake ,pearl and solid, mainly used in the fields of metallurgy ... ,textile,papermaking,printing and dyeing, pharmacy,soap,etc. Spec for Flake & Solid:99%MIN NaOH0.7%MAX98%MIN96%MIN Na2CO30.1 ...