Patent ID: 8840808

Claim:
A process for producing a liquid composition for an organic semiconductor device, the process comprising: a step of reducing the amount of a halogen compound in a hydrocarbon solvent containing the halogen compound in a concentration of more than 100 ppm by weight so that the halogen compound concentration becomes not more than 100 ppm by weight; a step of preparing an organic solvent comprising the resulting hydrocarbon solvent, the organic solvent being liquid at 1 atm and 25° C. and having a halogen compound concentration of not more than 100 ppm by weight; and a step of dissolving an organic compound which is solid at 1 atm and 25° C. in the organic solvent, wherein the organic solvent is a mixed solvent comprising a first organic solvent and a second organic solvent, the first solvent being the hydrocarbon solvent, and the step of preparing the organic solvent is a step of mixing two or more organic solvents comprising the hydrocarbon solvent containing the reduced amount of the halogen compound and the second organic solvent having a halogen compound concentration of not more than 100 ppm by weight.