Sulfuric acid is usually used for pickling jadeite. Dilute sulfuric acid is a strong acid, which is used to remove impurities and dirt on the surface of jadeite and restore the luster and color of jadeite. However, the pickling process needs to be very careful, because sulfuric acid is a dangerous chemical and must be carried out under appropriate environment and conditions to ensure safety. Therefore, if it is necessary to pickle jadeite, it is best to do it by a professional jeweler or jadeite treatment expert. Don't try to wash or treat the jadeite in your home with acid to avoid injury. In addition to dilute sulfuric acid, in some cases, other dilute acids can also be used for jade pickling, such as hydrochloric acid. However, no matter which pickling agent is used, you must be extremely cautious and follow the following safe operations:

1.** Appropriate equipment * *: Pickling needs to be carried out in a chemical laboratory or a professional place to ensure proper safety equipment, such as laboratory gloves, goggles and protective clothing.

2.** Ventilation * *: Make sure there is enough ventilation to discharge harmful gases. Pickling will release toxic steam and needs to be carried out in a well-ventilated place.

3.** Professional guidance * *: It is best for experienced jewelers or jade treatment experts to carry out the pickling process, because they are familiar with the safety operation procedures.

4.** Handle with care * *: Be careful in the pickling process to prevent the acid from contacting the skin and eyes. In case of accidental contact, please immediately flush with plenty of water and seek medical attention.

5.** Disposal of waste liquid * *: The waste liquid generated by pickling shall be disposed according to the laws and regulations on chemical waste disposal, and shall not be dumped into sewers or the environment at will.

In short, jade pickling is a process that requires professional knowledge and equipment and should not be carried out at home. If it is necessary to clean or treat jadeite, it is best to consult a professional jeweler or jadeite expert to ensure safety and protect the quality of jadeite.