Black and white photothermographic material

A black and white photothermographic material comprising, on at least one side of a support, at least a photosensitive silver halide, a non-photosensitive organic silver salt, and a reducing agent for silver ions, wherein the reducing agent for silver ions is a compound represented by the following formula (PP) and having a molecular weight of from 450 to 3000, and the black and white photothermographic material further comprises a compound represented by the following formula (II):

• wherein R1 and R2 each independently represent a hydrogen atom or an alkyl group having 1 to 20 carbon atoms;
• at least one of R1 and R2 is an alkyl group having 1 to 20 carbon atoms;
• L represents a linking group having a valency of from 2 to 8 and represents an alkylene group, an arylene group, an aralkylene group, a heterocyclic linking group, or a combination thereof;
• R3 represents a hydrogen atom or a substituent;
• and n represents an integer of from 2 to 8;
• wherein R1c represents an alkyl group, an aryl group, an alkenyl group, or an alkynyl group;
• X1c represents an alkoxycarbonyl group, a carbamoyl group, a sulfonyl group, or a sulfamoyl group;
• and Y1 to Y5 each independently represent a hydrogen atom or a substituent.