Infrared shielding film and infrared shielding material

An infrared shielding film comprising:

• an organic binder;
• and
• a plurality of tin-doped indium oxide particles dispersed in the organic binder,
• wherein the tin-doped indium oxide particles are produced using fatty acid salts of In and fatty acid salts of Sn, and surfaces of the tin-doped indium oxide particles are coated with an organic protective group derived from the fatty acid salts,
• the organic binder is one selected from the group consisting of (Z)-4-octenenitrile, (Z)-5-octenenitrile, (Z)-5-nonenenitrile, (Z)-6-undecenenitrile, (Z)-9-undecenenitrile, and (Z)-9-octadecenenitrile,
• an amount of the organic binder is in a range of 5 parts by mass or more and 30 parts by mass or less when an amount of the tin-doped indium oxide particles is 100 parts by mass,
• the tin-doped indium oxide particles are dispersed in a state of primary particles,
• an average center-to-center distance between adjacent particles of the tin-doped indium oxide particles is in a range of 9 nm or more and 36 nm or less,
• a ratio of the average center-to-center distance between the adjacent particles to an average primary particle diameter of the tin-doped indium oxide particles is in a range of 1.05 or more and 1.20 or less, and
• a roughness Ra of a film surface is in a range of 4 nm or more and 50 nm or less.