This heat-sealable paper comprises at least one heat-sealable layer on at least one face of a paper base material. The heat-sealable layer contains a water dispersible resin binder. A vertical/horizontal geometric mean of a specific tear strength of the heat-sealable paper is 10 mN·m2/g or greater. A specific burst strength of the heat-sealable paper is 3.0 kPa·m2/g or greater. A heat seal peel strength in a case in which the heat-sealable layers are heat-sealed to each other under a condition of 150 degrees centigrade, 0.2 MPa, and one second is between 2.0 N/15 mm and 10 N/15 mm both inclusive.

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