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Here, NaOH or NH3 · H2O is used as a precipitant or pH regulator to react with FeSO4 to form ferrous hydroxide precipitation; Air is used as oxidant; The iron sheet reacts with sulfuric acid produced during the oxidative hydrolysis of FeSO4 to provide ferrous ions required in the reaction system and maintain the pH value of the solution. The alkali consumption of acid method is less and the particles are easy to wash. The relative rates of seed preparation and crystal growth determine the particle size, particle size distribution and particle morphology of iron yellow particles.

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One of the key benefits of inner wall coatings is their ability to protect walls from damage caused by moisture, mold, and other environmental factors. These coatings create a barrier that helps prevent water infiltration, which can lead to costly repairs and potential health hazards. Additionally, many inner wall coatings are designed to be mold and mildew resistant, further enhancing the durability and longevity of the walls.

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