1) Purity 99% min,white crystal flakes 2) We accept BV or SGS testing 3) Shipment within ... caustic soda in different purities and appearances (96%,99% and flakes, solid,peals); anhydrous sodium sulfite, sodium bisulfite, ... If you ... , soap-making, metallurgy, Glass, enamel, medicament, oil-refining and making synthetic fiber, plastics, etc. ITEMSSTANDARDRESULTSNaOH %≥99.0099.30Na2CO3 %≤0.900.40NaCL ...