| abstract |
A surface treatment agent including a compound represented by the following general formula (P-1) and an acid. In the formula, R 1 represents a linear or branched alkyl group having 8 or more carbon atoms, a linear or branched fluorinated alkyl group having 8 or more carbon atoms, or an aromatic hydrocarbon group; R 2 and R 3 each independently represents a hydrogen atom, a linear or branched alkyl group having 8 or more carbon atoms, a linear or branched fluorinated alkyl group having 8 or more carbon atoms, or an aromatic hydrocarbon group n R 1 —P(═O)(OR 2 )(OR 3 ) (P-1). |