CHLORINE-CONTAINING RESIN COMPOSITION WITH SUPPRESSED FOAMING FAILURE

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The present invention has an object to provide a non-toxic chlorine-containing resin composition, particularly a non-toxic chlorine-containing resin compositions for injection molding, which suppresses or reduces flashes or silver streaks, as well as has a sufficiently high physical properties for practical use. The present invention directs to a chlorine-containing resin composition including : 100 parts by mass of chlorine-containing resin; and 0.01 to 5 parts by mass of an alkaline-earth metal hydroxide having, on the surface thereof, a first coated layer. The first coated layer contains 0.1 to 20 % by mass in terms of SiO2 of silica in 100% by mass of an uncoated alkaline-earth metal hydroxide.