The raw material used in this method is FeSO4. In order to maintain the Fe3 + concentration in the reaction medium in a specific range, reducing agent iron sheet is added in the reaction process. Iron yellow crystal seed was added and air was introduced to synthesize iron yellow under certain pH conditions. The method mainly includes two steps: (1) firstly, FeSO4 · 7H2O is used as raw material, NaOH or NH3 · H2O is used as precipitant or pH regulator, and air is used as oxidant to prepare crystal seed; (2) Iron yellow is produced by two-step oxidation with crystal seed, FeSO4, iron sheet and air.
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2025-08-15 03:42
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This trend toward consolidation enabled companies to invest more heavily in research and development, leading to breakthroughs in pigment performance and application versatility This trend toward consolidation enabled companies to invest more heavily in research and development, leading to breakthroughs in pigment performance and application versatility
Baking soda can be a powerful ally in this case Baking soda can be a powerful ally in this case
First, avoid exposing the pan to extreme temperature changes, such as placing a hot pan directly into cold water First, avoid exposing the pan to extreme temperature changes, such as placing a hot pan directly into cold water
For example, a piece of meat can be seared in the frying pan to create a flavorful crust, then transferred to the iron cast to finish cooking through slowly, resulting in a tender and juicy result For example, a piece of meat can be seared in the frying pan to create a flavorful crust, then transferred to the iron cast to finish cooking through slowly, resulting in a tender and juicy result