PROPYLENE GLYCOL
Product Details
Industrially, propylene glycol is mainly produced from propylene oxide(for food-grade use). According to a 2018 source, 2.16 M tones are produced annually. Manufacturers use either non-catalytic high-temperature process at 200 °C (392 °F) to 220 °C (428 °F), or a catalytic method, which proceeds at 150 °C (302 °F) to 180 °C (356 °F) in the presence of ion exchange resin or a small amount of sulfuric acid or alkali
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