Method for producing 1,3-butylene glycol, and 1,3-butylene glycol product

A method for producing 1,3-butylene glycol to yield purified 1,3-butylene glycol from a reaction crude liquid including 1,3-butylene glycol, the method comprising:

• performing dehydration including removing water by distillation;
• removing a high boiling point component including removing a high boiling point component by distillation;
• and
• performing product distillation to yield purified 1,3-butylene glycol,
• wherein, in a high boiling point component removal column for use in the removing the high boiling point component, a charged liquid including 1,3-butylene glycol is distilled under a condition that a reflux ratio is 0.1 or greater and not greater than 100 in a case where a concentration of 1,3-butylene glycol in the charged liquid is 95% or less, or a reflux ratio is 0.05 or greater and not greater than 100 in a case where a concentration of 1,3-butylene glycol in the charged liquid is greater than 95%, and high-purity 1,3-butylene glycol is distilled off from above a charging plate, and a liquid in which a high boiling point component is concentrated is extracted from below the charging plate.