Sekisui Chemical

[Problem] To provide a practical and novel alcohol and derivatives thereof which have more industrial value than existing petrochemical raw materials. [Solution] Ethanol comprising an inorganic component and/or an organic component, wherein the inorganic component comprises at least one component selected from the group consisting of: silicon having a content of 10 mg/L or more and 100 mg/L or less; chromium having a content of 0.6 mg/L or less; iron having a content of 2.0 mg/L or less ; sodium having a content of 150 mg/L or more and 1000 mg/L or less; and potassium having a content of 1.0mg/L or more and 10 mg/L or less; and the organic component comprises at least one component selected from the group consisting of: aliphatic hydrocarbon having a content of 0.16 mg/L or more and 10 mg/L or less; aromatic hydrocarbon having a content of 0.4 mg/L or more and 10 mg/L or less; and dialkyl ether having a content of 0.1 mg/L or more and 100 mg/L or less.

[Problem to be Solved]Provided is a method which allows, for example, suppression of foaming in the purification step such as distillation and continuous operation, as well as direct treatment of a waste liquid (can liquid) without having to subject the same to an extra purification treatment by removing the microorganisms, nitrogen compounds, and phosphorous compounds at once from an organic substance-containing liquid obtained from microbial fermentation[Means to Solve the Problem]Disclosed is a method for producing an organic substance, comprising:a microbial fermentation step of obtaining a first organic substance-containing liquid comprising an organic substance, a nitrogen compound, a phosphorous compound, and microorganisms by microbial fermentation;a separation step of heating the first organic substance-containing liquid and separating into a liquid or solid component comprising the nitrogen compound, the phosphorous compound, and the microorganisms and a gaseous component comprising the organic substance;a liquefaction step of liquefying the gaseous component comprising the organic substance by condensation to obtain a second organic substance-containing liquid comprising the organic substance, anda second purification step of separating a distillate comprising the organic substance and a second can liquid from the second organic substance-containing liquid, whereinthe concentration of the nitrogen compound in the second can liquid is 0 to 150 ppm based on the total mass of the second can liquid, and the concentration of the phosphorous compound in the second can liquid is 0 to 5 ppm based on the total mass of the second can liquid.

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