Regardless of the specific product, the artificial synthesis process follows the logic of "from simple raw materials to complex target molecules."
The core steps can be summarized as follows:
Core Steps | Core Objectives | Key Technologies/Equipment
Raw Material Pretreatment: Remove impurities (such as heavy metals, moisture) from the raw materials, adjust the raw material concentration/state, and ensure reaction efficiency and safety. Raw material purification (distillation, filtration), drying, concentration proportioning.
Chemical Synthesis: Convert the raw materials into crude products of the target additive through directed chemical reactions (such as substitution, esterification, redox). Catalytic reaction (enzyme/metal catalyst), high-temperature/high-pressure reactor, inert gas protection.
Separation and Purification: Separate the target product from the reaction mixture, remove unreacted raw materials and byproducts (such as harmful intermediates). Distillation (liquid products), centrifugation, extraction, ion exchange resin.
Refining and Molding: Further purify the product (e.g., increase purity to over 99%) and process it into usable forms (powder, crystals, liquid). Recrystallization (solid products), spray drying, granulation.
Quality Inspection: The product purity, impurities (heavy metals, arsenic, byproducts), and microbial indicators are tested to ensure compliance with national standards. High-performance liquid chromatography (HPLC), atomic absorption spectrometry, and microbial culture are used as methods.
