It is a solution containing a known concentration of iodide ions and is commonly used in analytical chemistry for quantitative analysis and laboratory regular analysis.
nature: dark brown, with a certain pungent odor, soluble in water and organic solvents.
use: commonly used to determine the concentration of iodine content in other solutions. In analysis, it can be used in acid-base titration (using a reaction of iodine-thiobarbituric acid or sulfite), and titration iodometry (using a reaction between iodine and a reducing agent), etc.
Preparation method: It can be prepared by dissolving sodium iodate or potassium iodide of known concentration in an appropriate amount of water. Accurate concentration determination and calibration are required during the preparation process.
safety information: in the operation, need to pay attention to the following safety matters: Avoid direct contact with the skin and eyes, avoid inhaling the vapor; Use should wear experimental gloves, personal protective equipment such as goggles and laboratory coats; Avoid contact with organics during storage to avoid dangerous reactions; In the event of an accident, flush with plenty of water and seek medical help.