... and metal welding industries etc..Borax(Sodium tetraborate), also known as crude borax, is soft and light colorless crystalline substance. ... (Sodium tetraborate) has many uses we are familiar with, such as disinfectant, preservative, water softener, wash water, soap additives, ceramic ... biggest advantages. Sincerely look forward to your attention. Borax Decahydrate P&B used as Fertilizer and pesticide