... 5Has r&d team Main components: content: industrial level ≥ 99.5%; two ≥ 99.0%; three ≥ 98%. Appearance: colorless orthorhombic or trigonal or ... fireworks, gunpowder, matches, medicine, and glass industries. Item Specification Assay 99.4%min Moisture 0.10%max Chloride 0.02%max ...