Colorless crystals, easy to deliquesce. Soluble in water and alcohol. Uses: used as catalyst, feed additive and cosmetics. Magnesium acetate tetrahydrate can be used as feed additive and cosmetics; used to prepare magnesium uranyl acetate for the determination of sodium; used in medicine, industry, deodorization, sterilization, preservative, textile dyeing, eosin dyeing, aniline black fixation, etc.