Silver halide photographic material

A silver halide photographic material, comprising a support having thereon at least one silver halide emulsion layer, wherein the silver halide emulsion layer contains at least 1.times.10.sup.-4 mol of a compound represented by formula (I) per mol of silver halide and from 1.times.10.sup.-3 to 1.times.10.sup.-1 mol of a compound represented by formula (II) per mol of the compound of formula (I) and the iodine content of the silver halide emulsion is up to 1 mol %:

• ##STR25## wherein R.sub.1 and R.sub.2 each represents a substituted or unsubstituted alkyl group, a substituted or unsubstituted alkenyl group, or a substituted or unsubstituted aryl group, at least one of R.sub.1 and R.sub.2 is a sulfoalkyl group or a carboxyalkyl group;
• R.sub.3 represents a substituted or unsubstituted alkyl group;
• X.sup..crclbar. represents a counter ion necessary to balance the charge of the molecule;
• n represents a number necessary to balance the charge;
• and Z.sub.1 and Z.sub.2 each represents a group of nonmetallic atoms necessary to complete a substituted or unsubstituted benzene ring or a substituted or unsubstituted benzene ring or a substituted or unsubstituted naphtho ring, and when the molecule of formula (I) forms an intramolecular salt, n is 0:
• ##STR26## wherein R.sub.4, R.sub.5, R.sub.6 and R.sub.7 each represents a substituted or unsubstituted alkyl group;
• X.sup..crclbar. represents a counter ion necessary to balance the charge of the molecule;
• n represents a number necessary to balance the charge;
• and Z.sub.3 and Z.sub.4 each represents a group of nonmetallic atoms necessary to complete a substituted or unsubstituted benzene ring or a substituted or unsubstituted naphtho ring, and when the molecule of formula (II) forms an intramolecular salt, n is 0, wherein the silver halide emulsion layer contains tabular silver halide grains having a mean aspect ratio of at least 3 in an amount such that the tabular grains account for at least 50% of the total projected area of all the silver halide grains in the emulsion layer.