Basic Copper Carbonate Neutralization Determination Method

• Posted by wei shida March 3, 2021 - Filed in Business - #Basic Copper Carbonate  #　　Copper Hydroxide  - 692 views

  When using Basic Copper Carbonate, in order to make better use of the product's performance, we usually measure the product's performance and use the neutralization method of boric acid more frequently. In order to facilitate your operation, next, introduce the relevant knowledge of the method of neutralization of boric acid.
  Scope of application: This method uses neutralization titration to determine the content of boric acid (H3BO3). This method is suitable for the determination of boric acid.

  Method principle: Take an appropriate amount of test product, add mannitol and freshly boiled cold water to dissolve it under warm heat, immediately let it cool to room temperature, add phenolphthalein indicator solution, and use sodium hydroxide titrant (0.5mol/L) Titrate until it looks pink. It is calculated that every 1mL sodium hydroxide titrant (0.5mol/L) is equivalent to 30.92mg H3BO3.
  "Accurate weighing" means that the weighing should be accurate to one thousandth of the weighed weight, and "accurate measurement" means that the accuracy of the weighed volume should meet the national standards for pipette volume.

  
  Accuracy requirements; use the drying method for "moisture determination", take 2~5g sample and place it in a flat weighing bottle that is dried to a constant weight. The thickness should not exceed 5mm, and the loose sample should not exceed 10mm. It is accurate Weigh, open the lid, dry at 100~105℃ for 5 hours, put the lid in a desiccator, cool for 30 minutes, accurately weigh, then dry at the above temperature for 1 hour, cool, and weigh until twice The difference between consecutive weighings does not exceed 5mg. According to the weight loss, calculate the moisture content (%) in the test product.
  In short, when we neutralize the determination of boric acid, we must follow its correct method to ensure the accuracy of the determination and promote future performance. If necessary, we must have a full understanding of boric acid to effectively promote the expansion of the product range. Pay attention to Copper Hydroxide and zinc sulfate heptahydrate during the experiment.