Black polyester hollow molded item and master batch and colored pellet for it

PURPOSE:To obtain surely a polyester hollow molded item which has a color tone of black or dark green based on black and a luster at a line speed (or productivity) being the same or approximately the same as that for a transparent and colorless polyester hollow molded item wherein no pigment is incorporated. CONSTITUTION:A thermoplastic polyester resin is colored into a black color by using a carbon black wherein the volatile matter (VM) and the specific surface area (SN2) measured by BET method satisfies a relation expressed by the following equation (1), VM/SN2>=0.09...(1).