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This also explains why benzaldehyde grades matter. Food-grade material must meet strict purity and impurity limits, especially chlorine content from hydrolysis routes. Buyers in food applications should specify grade requirements clearly to avoid off-spec product.
The oxidation route's low selectivity is a key cost driver. Producers often accept lower yields to maintain product quality for high-end applications. Buyers should verify whether material is chlorine-free if intended for pharmaceutical or fragrance use, as chlorinated impurities can disqualify product.
The export surge is notable—China is becoming a net supplier. But watch for environmental regulations on chlorination processes, which could shift production toward oxidation routes and alter cost structures. Buyers should monitor policy changes affecting major producers.