Adhesive composition, adhesive layer, adhesive sheet, optical member with adhesive layer, image display device and touch panel

The purpose of the present invention is to provide: an acrylic adhesive composition for forming an adhesive layer that is used for the purpose of bonding an optical member of an image display device, the acrylic adhesive composition being capable of forming an adhesive layer that is not susceptible to white opacification due to humidification even under high-temperature humid conditions; an adhesive layer; an adhesive sheet; an optical member with an adhesive layer; an image display device; and a touch panel. The present invention provides an acrylic adhesive composition for forming an adhesive layer that is used for the purpose of bonding an optical member of an image display device, wherein the water contents W1, W2 of the adhesive layer after being subjected to the conditions (A) and (B) described below satisfy formula (1). (1): W2/W1 > 1 (A) W1 ([mu]g/cm2): the water content of the adhesive layer after being stored for 24 hours at 23 DEG C and 50% RH (B) W2 ([mu]g/cm2): the water content of the adhesive l