Clarified thermoplastics exhibiting very high nucleation efficacy

An additive composition of compounds that provides both nucleating and clarifying characteristics within thermoplastics, wherein said additive composition comprises at least two different compounds, a first compound being a saturated bicyclic carboxylic acid salt cyclic compound that induces nucleation within polypropylene and a second compound being an alditol-based polypropylene clarifying compound, wherein said additive composition induces a peak crystallization temperature of at least 125° C. and simultaneously a haze measurement of at most 20% for a test homopolymer polypropylene formulation comprising said nucleating agent, wherein the unnucleated test homopolymer propylene exhibits a density of about 0.9 g/cc, a melt flow of about 12 g/10 mm, a Rockwell Hardness (R scale) of about 90, a tensile strength of about 4,931 psi, an elongation at yield of about 10%, a flexural modulus of about 203 ksi, an Izod impact strength of about 0.67 ft-lb/in, and a deflection temperature at 0.46 mPa of about 93°, and wherein said formulation comprising said combination is extruded then molded into plaques having dimensions of about 51 mm×76 mm×1.27 mm, wherein said peak crystallization temperature is measured by differential scanning calorimetry in accordance with a modified ASTM Test Method D3417-99 at heating and cooling rates of 20° C./minute, wherein said haze measurements are performed in accordance with ASTM Standard Test Method D1003-61, and wherein the total amount of said additive composition present within said test homopolymer is at most 0.35% by weight.