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ChEBI: Propane-1,3-diol is the simplest member of the class of propane-1,3-diols, consisting of propane in which one hydrogen from each methyl group is substituted by a hydroxy group. A colourless, viscous, water-miscible liquid with a high (210℃) boiling point, it is used in the synthesis of certain polymers and as a solvent and antifreeze. It has a role as a protic solvent and a metabolite.
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As a diol, 1,3-propanediol is subject to many of the same polymeric applications as other low molecular mass diols (e.g., ethylene glycol, propylene glycol, and 1,4-butanediol). However, its relatively high price limits its use to applications requiring very specific performance characteristics. It is a raw-material source for 1,3-dioxanes. 1,3-Propanediol-bis(4-aminobenzoate) can be used as a chain extender in polyurethane elastomers. This bisbenzoate, which can also be synthesized from 1,3-dichloro-propane, finds other applications as a cross-linking agent in epoxy formulations and as a rubber additive.
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