Borax 1.Purity: 99% & 99.5% 2.Appearance: colorless crystal 3.Feature: soft, light 4.Use:glass, enamel, ceramic, metal Borax(Sodium tetraborate), also known as crude borax, is soft and light colorless crystalline substance.Borax(Sodium tetraborate) has many uses we are familiar with, such as disinfectant, preservative, water softener, wash water, soap additives, ceramic glaze and glass raw ...