Polyamide-based formulations

A composition consisting essentially of:

• (a) at least 50 wt % polyamide;
• (b) optionally, polyamide reinforcing material;
• (c) a flame retardant amount of a flame retardant selected from, decabromodiphenyl oxide, decabromodiphenyl ethane, decabromodiphenyl methane, hexabromodixylyl ethane, octabromoditolyl ethane, N,N'-ethylene bis(tetrabromophthalimide), N,N-bis(tetrabromophthalimide), tetradecabromodiphenoxybenzene, brominated 1,1,3-trimethyl-3-phenyl indan, brominated 1-phenyl-3-phenyl indan, and mixtures of any two or more of the foregoing;
• (d) a synergistic amount of M.sub.2 OSb.sub.2 O.sub.3 wherein M is an alkali metal radical, and
• (e) an additive selected from the group consisting of fillers, pigments, UV stabilizers, antioxidants, processing aids and combinations of any two or more of the foregoing, said composition being characterized in that it will not experience thermal degradation before reaching a processing temperature of 320.degree. C.