Resin material, vinyl bag, polycrystalline silicon rod, polycrystalline silicon mass

A method for handling a polycrystalline silicon rod, comprising handling the polycrystalline silicon rod that has been synthesized by Siemens method, while keeping the polycrystalline silicon rod in a vinyl bag,

• wherein the vinyl bag is composed of a vinyl material,
• wherein inner surface impurities of the vinyl material are controlled so that after contact with the vinyl material, surface impurities of the polycrystalline silicon rod have a phosphorus (P) concentration of 3 pptw or less, an arsenic (As) concentration of 1 pptw or less, a boron (B) concentration of 2 pptw or less, an aluminum (Al) concentration of 3 pptw or less, a total concentration of 6 elements of iron (Fe), chromium (Cr), nickel (Ni), copper (Cu), sodium (Na), and zinc (Zn) of 59 pptw or less, and a total concentration of 10 elements of lithium (Li), potassium (K), calcium (Ca), titanium (Ti), manganese (Mn), cobalt (Co), molybdenum (Mo), tin (Sn), tungsten (W), and lead (Pb) of 65 pptw or less, and
• wherein the surface impurities of the polycrystalline silicon rod are measured by contacting a surface of a 150 g sample of the polycrystalline silicon rod with 200 ml of an extraction liquid composed of 25 wt% hydrofluoric acid, 0.35 wt% hydrogen peroxide, and water, performing extraction for 10 minutes, and performing a quantitative analysis of the extraction liquid by ICP-mass spectrometry.