Hollow silica fine particles, composition for forming transparent film containing the same, and substrate with transparent film

The present invention provides a hollow silica fine particle capable of suppressing whitening of a transparent film and exhibiting excellent scratch resistance and adhesion, and a method for producing the same. SOLUTION: Hollow silica fine particles having an average particle diameter of 5 to 300 nm and a specific surface area of 50 to 1500 m 2 / g measured by a dynamic light scattering method and having a cavity formed inside an outer shell. The thermogravimetry (TG) shows a weight loss of 1.0% by weight or more in the temperature range of 200 ° C to 500 ° C. The hollow silica fine particles have a positive DTA peak in differential heat retention measurement (DTA) in the temperature range of 200 ° C to 500 ° C. An organosol in which hollow silica fine particles are dispersed is prepared, and a silane compound and an alkali catalyst are added to the organosol in a temperature range of 30 ° C. to 300 ° C., and the water content is 0.1 to 50% by weight with respect to the silica content. Under the conditions, the silane compound and the hollow silica fine particles are reacted to produce. [Selection figure] None