Gas barrier laminate, packaging film, packaging container, and packaged product

A gas barrier laminate, comprising:

• a substrate layer containing a thermoplastic resin;
• an inorganic oxide layer;
• and
• a gas barrier coat layer in this order,
• wherein the gas barrier coat layer is a cured article of a gas barrier coat layer forming composition,
• the gas barrier coat layer forming composition includes
• a water-soluble polymer,
• a first silicon compound composed of at least one of a silicon alkoxide represented by general formula (1) below and hydrolysates thereof, and
• a second silicon compound composed of at least one of a silicon alkoxide represented by general formula (2) below and hydrolysates thereof,
• the water-soluble polymer has a mass ratio of 55 to 95% by mass relative to a total mass of the water-soluble polymer and the second silicon compound when the second silicon compound is converted to R2Si(OH)3, and
• the first silicon compound has a mass ratio of more than 0% by mass and 89% by mass or less relative to a total mass of the first silicon compound and the second silicon compound when the first silicon compound is converted to SiO2 and the second silicon compound is converted to R2Si(OH)3:
• Si(OR1)4 (1)
• (R2Si(OR3)3)n (2)
• (in general formulas (1) and (2) above, R1 and R3 each denote an alkyl group or —C2H4OCH3, and R2 denotes an organic functional group;
• n represents an integer equal to or greater than 1).