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safefoodmitra.com · 2025-01-20 09:45:56
The patent CN103864579A describes a method for synthesizing crude Tertiary Butyl Hydroquinone (TBHQ) with high purity (up to 99.5%). The process involves mixing hydroquinone with phosphoric acid and water, followed by adding tert-butyl alcohol in a reaction vessel. The mixture is heated to specific temperatures (55–85°C) to facilitate the reaction, then the product is isolated through centrifugal separation, washing, and dehydration. Unlike traditional methods that use toluene as a solvent, this process uses water, reducing pollution and improving raw material utilization. TBHQ itself is not directly extracted from petroleum but substance used for its production like hydroquinone and tert-butyl alcohol, are often derived from petroleum-related processes. Therefore, TBHQ can be considered indirectly linked to petroleum-derived products.

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