How to check the purity of aluminum sulfate
Release date£º2016/4/13 15:59:08 Number of views£º
Many customers have doubts about the purity of the products they purchase when producing aluminum sulfate? Is the labeling on the packaging accurate? This series of issues is closely related to the equipment of iron free aluminum sulfate, but the chemical may undergo slight quality changes during long-term transportation and storage, which can affect its composition. Please refer to the introduction of the manufacturer of iron free aluminum sulfate equipment for details.
Take a small amount of sample and divide it into two parts: 1. Take one part and place it in test tube 1. Add enough NaOH (aq) dropwise. If a white precipitate appears in the solution and disappears later, it indicates the presence of Al3+2. Take another part and place it in test tube 2. Add a small amount of Ba (NO3) 2 (aq) dropwise, and a white precipitate appears. Then add HNO3 (aq) dropwise. The precipitate does not dissolve. The manufacturer of iron free aluminum sulfate equipment explained that encountering such a display indicates the presence of SO4 2+. Gradually introducing NaOH solution into it, a white precipitate Al (OH) 3 is first produced. As the amount of NaOH increases, the precipitate gradually disappears to form NaAlO2 dissolved in water, which proves the presence of Al ions in the original solution. Add a solution of BaCl2 acidified with dilute hydrochloric acid dropwise (diluted hydrochloric acid is used to eliminate interference from Ag ions, sulfite ions, carbonate ions, etc.). If a white precipitate insoluble in dilute nitric acid is produced, it proves the presence of sulfate ions.
For more information and knowledge about iron free aluminum sulfate equipment and various types of iron free aluminum sulfate, please follow the website update of Zibo Dingsheng Machinery Equipment Co., Ltd., website: http://www.liusuanlvshebei.com
Many customers have doubts about the purity of the products they purchase when producing aluminum sulfate? Is the labeling on the packaging accurate? This series of issues is closely related to the equipment of iron free aluminum sulfate, but the chemical may undergo slight quality changes during long-term transportation and storage, which can affect its composition. Please refer to the introduction of the manufacturer of iron free aluminum sulfate equipment for details.
Take a small amount of sample and divide it into two parts: 1. Take one part and place it in test tube 1. Add enough NaOH (aq) dropwise. If a white precipitate appears in the solution and disappears later, it indicates the presence of Al3+2. Take another part and place it in test tube 2. Add a small amount of Ba (NO3) 2 (aq) dropwise, and a white precipitate appears. Then add HNO3 (aq) dropwise. The precipitate does not dissolve. The manufacturer of iron free aluminum sulfate equipment explained that encountering such a display indicates the presence of SO4 2+. Gradually introducing NaOH solution into it, a white precipitate Al (OH) 3 is first produced. As the amount of NaOH increases, the precipitate gradually disappears to form NaAlO2 dissolved in water, which proves the presence of Al ions in the original solution. Add a solution of BaCl2 acidified with dilute hydrochloric acid dropwise (diluted hydrochloric acid is used to eliminate interference from Ag ions, sulfite ions, carbonate ions, etc.). If a white precipitate insoluble in dilute nitric acid is produced, it proves the presence of sulfate ions.
For more information and knowledge about iron free aluminum sulfate equipment and various types of iron free aluminum sulfate, please follow the website update of Zibo Dingsheng Machinery Equipment Co., Ltd., website: http://www.liusuanlvshebei.com
