Sodium hydroxide:white flakes, piece, pellet. Pure is colorless, transparent crystal.25kgs woven bag. Name: ... -73-2Molecular weight: 40Appearance: white flakes, piece, pellet. Pure is colorless, transparent crystal. Melting point:318.4. Boiling point ... :25kgs woven bag.Application: Basic chemical material, used as high pure reagents. Widely used in chemical, metallurgy, paper making, oil ...