What are the main applications of lead oxide?

Lead oxide is used as a pigment for lead white, in the production of lead soap, as a metallurgical solvent, as a paint drying agent, as a ceramic raw material, as a rubber vulcanization accelerator, as an insecticide, as a stabilizer for lead salt plastics, as a raw material for lead glass industry, and as an intermediate raw material for lead salt industry. A small amount is used as traditional Chinese medicine and in the battery industry, as well as in the manufacture of radiation resistant rubber products.

Egg processing:

Lead oxide, also known as Amitabha Buddha powder, Jinsheng powder, Huangdan powder, etc. According to the standards of the Ministry of Chemical Industry, lead monoxide is divided into three grades: the first grade contains no less than 99% lead oxide, the second grade contains no less than 97% lead oxide, and the third grade contains no less than 95% lead oxide. They can all be used for egg processing. There is also a red yellow lead oxide with low purity and high impurities, which is not suitable for use. Lead oxide is a heavy metal salt that can cause protein coagulation; Also, due to its strong corrosiveness, it can promote the penetration of ingredients into the egg, shorten the maturation time, and reduce protein alkalinity, which has the effects of color enhancement and shell detachment. But if used too much, it can cause the eggshell to become thinner and produce corrosion spots, and even cause protein decay.

Side effect:

After being absorbed by the human body, lead accumulates in the liver, causing chronic lead poisoning. However, in the practice of processing eggs, if the dosage is strictly controlled at 0.15 kg or less of lead oxide per 100 pounds of soup base, the actual amount of lead oxide that seeps into the eggs will be very low; In addition, a portion of lead oxide entering the mutant egg combines with proteins to form insoluble protein lead salts, which precipitate; Protein lead salts are not easily absorbed by the human body, so their toxic effects are smaller. The lead content of Preserved eggs shall not exceed 4 parts per million.