ISO 9113:2019 PDF

Overview

ISO 9113:2019 specifies a chemical-extraction method to determine the isotactic index of crystalline polypropylene (PP) and propylene‑copolymer thermoplastics. The standard measures the n‑heptane extractable matter from a solid propylene polymer sample under defined conditions, and reports isotactic index as an absolute value (II = 100 − S). It is applicable to base polymers (not mixtures) and supports identification/coding of types H, B and R in accordance with ISO 19069‑1.

Key topics and requirements

• Scope and limitation
  • Applies only to solid propylene plastics in particle form and to base polymers (not blends).
  • Provides results used to classify types H, B and R (see ISO 19069‑1).
• Sample preparation
  • Reduce material to particles that pass a sieve (recommended mesh 0.5 mm ± 0.1 mm; not greater than 1 mm).
  • For grinding: mix at least 10 g sample with solid CO2 or liquid nitrogen and mill; allow screened material to equilibrate to room temperature.
• Apparatus & consumables
  • Extraction apparatus suitable for boiling n‑heptane and cartridges (glass fibre or paper, Ø 30 mm ± 3 mm, length 100 mm ± 10 mm).
  • Ovens capable of 70 °C ± 2 °C and 140 °C ± 2 °C with vacuum