Liquid chemical and method for producing liquid chemical

A liquid chemical comprising:

• an organic solvent;
• and
• metal-containing particles containing a metal atom,
• wherein the number of metal nanoparticles contained in the metal-containing particles and having a particle size of 0.5 to 17 nm is 1.0×101 to 1.0×109 particles/cm3, based on the number of the particles per unit volume of the liquid chemical,
• the metal nanoparticles include metal nanoparticles containing a Pb atom and metal nanoparticles containing a Ti atom,
• a ratio of the number of the metal nanoparticles containing a Pb atom to the number of the metal nanoparticles containing a Ti atom is 1.0×10−3 to 9.0×10−1, based on the number of the particles per unit volume of the liquid chemical,
• the metal nanoparticles consist of at least one selected from the group consisting of particles A consisting of a simple substance of the metal atom, particles B consisting of an oxide of the metal atom, and particles C consisting of a simple substance of the metal atom and an oxide of the metal atom,
• a ratio of the number of the particles A contained to a total of the number of the particles B contained and the number of the particles C contained 1.0×10−1 or less, based on the number of the particles per unit volume of the liquid chemical, and
• the liquid chemical includes no resin.