[Mo:1](=O)(=O)=[O:2].C.C1(N)N=C(N)N=C(N)N=1.C1(N)N=C(N)N=C(N)N=1.[C:24]([O-:29])(=[O:28])[C:25]([O-:27])=[O:26].[Cu+2:30].C1C(=O)N(Br)C(=O)C1>>[Mo:1]=[O:2].[C:24]([O-:29])(=[O:28])[C:25]([O-:27])=[O:26].[Cu+2:30]When molybdenum trioxide is substituted for the melamine molybdate in combination with the copper oxalate in the above compound, no practical synergism is noted with this combination. For example, in the flaming mode NBS smoke test Dm /g values of about 23 (58.8% smoke reduction relative to the standard compound of Example I) were obtained with ratios of 1.0 molybdenum oxide and 4.0 copper oxalate, 2.0 molybdenum oxide and 3.0 copper oxalate, 3.0 molybdenum oxide and 2.0 copper oxalate, 4.0 molybdenum oxide and 1.0 copper oxalate. In contrast, it should be noted that when 1.0 copper oxalate and 4.0 melamine molybdate were used in the same compound the Dm /g was 19.08 with a smoke reduction of 65.1%, and with 4.0 copper oxalate and 1.0 melamine molybdate the Dm /g was 19.92 and a 64.38% smoke reduction.
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