... limited in Caustic Soda Flakes(99%,98%,and 96%) ,Caustic Soda Solid (99%,96%), and Caustic Soda Pearl (99%), Our monthly output is ... as the inorganic salt production ,preparation of borax ,manganese salts ,phosphate, etc .......Below are the specification of the Caustic Soda .ComposingFlake ... 96%Flake/pearl/solid 98%Flake/pearl/solid 99%NaOH96% Min.98% Min.99% Min.Na2CO31% Max.0.5% Max.0.4 ...