Abstract: In a recording material producing images due to a complex formed from an organic phosphorus-iron compound having a bond of PO.sup.- and/or PS.sup.- with Fe.sup.3+ in the molecule and a ligand compound which reacts with the organic phosphorus-iron compound, the present recording material is characterized in that (a) a colorless or light-colored oil-soluble and/or heat-fusible organic compound adheres to the surface of the organic phosphorus-iron compound and/or (b) an organic base is present out of contact with the organic phosphorus-iron compound. The present invention also provides a desensitizer comprising at least one compound selected from the group consisting of (a) organic phosphorus compounds having a bond of P--OH and/or P--SH, (b) organic compounds having an aminocarboxyl group and (c) salts of these compounds (a) and (b).

Abstract: This invention relates to recording materials comprising:(a) an organic phosphorus-iron compound having a bond of PO.sup.- and/or PS.sup.- with Fe.sup.+++ in the molecule and(b) a ligand compound capable of reacting with the organic phosphorus-iron compound to form a complex.