A diffusion apparatus for chemical products of the blower type having an apparatus housing body (1), an air blower (2), a chemical cartridge (3) and a battery (4), in which said body of apparatus housing (1) comprises equivalent first and second-sided housing bodies (10 and 11) coupled to each other by a hinge (12) openably, said first-sided housing body (10) having a blower mounting recess (13), an air flow section (14) and a battery housing recess (15), said second-side housing body (11) having an air flow section (16) separated from the air flow section (14) in said first side housing body； said air blower (2) has a fan (20) adapted for rotation by means of a motor (21), said fan (20) and said motor (21) being mounted on said blower mounting recess (13)； characterized in that said chemical cartridge (3) is placed on an annular edge in said blower mounting recess (13) so that it is overlapped with the air blower (2) in a thickness direction of said body of apparatus housing (1), which covers the air blower (2) and which is coaxial with it, and disposed between the air blower (2) in said first-sided housing body (10) and the flow section of air (16) in said second-sided housing body (11)； said battery (4) is removably received in said battery housing recess (15)； said blower mounting and battery housing recesses (13 and 15) are separated from each other in a direction of a plane and positioned so as not to overlap in the thickness direction； said chemical cartridge (3) contains a body impregnated with chemical (31) having a carrier in the form of a sheet impregnated with a chemical； and said second-sided housing body (11) adopts its open position in which it discovers said blower mounting and battery housing recesses (13 and 15) and its closed position in which it covers both said recesses (13 and 15 ) and holds said chemical cartridge (3) against the annular edge with the inner face of said second-sided housing body (11).Aparato de difusión de productos químicos d
