ISO 4608:2023 PDF

Name: ISO 4608:2023 — Plastics — Homopolymer and copolymer resins of vinyl chloride for general use — Determination of plasticizer absorption at room temperature
SKU: ISO 4608:2023
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Plastics — Homopolymer and copolymer resins of vinyl chloride for general use — Determination of plasticizer absorption at room temperature

Название (английский):

ISO 4608:2023

Plastics — Homopolymer and copolymer resins of vinyl chloride for general use — Determination of plasticizer absorption at room temperature

Статус документа:: Действующий
Формат:: Электронный (PDF)
Количество страниц:: 6
Дата публикации:: 10 ноября 2023 г.
Издание:: ISO IS 4608 edition 4 version 1
ICS:: 83.080.20

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Описание (английский):

This document specifies a method for determining the plasticizer absorption at room temperature. It is applicable to PVC general-purpose resins and filler resins designated "G" and "F" in ISO 24024-1. This document can be used to determine the quantity of plasticizer absorbed by a resin at room temperature to give a dry mixture.

Abstract

Похожие стандарты

Стандарты, упомянутые в описании

Overview

ISO 4608:2023 - Plastics - Homopolymer and copolymer resins of vinyl chloride for general use - Determination of plasticizer absorption at room temperature - specifies a laboratory method to measure how much plasticizer a PVC general‑purpose or filler resin absorbs at ambient conditions. The test gives a practical indication of plasticizer uptake for producing dry blends and for quality control of vinyl chloride resins used in plasticized formulations.

Key topics and requirements

Scope: Applicable to PVC general‑purpose resins and filler resins designated “G” and “F” in ISO 24024‑1.

Principle: An excess of plasticizer is mixed with a weighed amount of resin, centrifuged, and the plasticizer retained by the resin is determined gravimetrically.

Apparatus & materials:

Balance with accuracy ±0.1 mg.
Burette or dispenser (see ISO 8655‑2).
Horizontal‑rotor centrifuge with acceleration at the tube bottoms of 24 500 to 29 500 m·s‑2 (60 min) and temperature ≤ 30 °C.
Centrifuge tubes (conical bottom with ~0.8 mm hole or with sieve plate) and sheaths.
Cotton wool (100 mg ± 2 mg) or filter paper; alternative absorbents allowed if equivalent.

Plasticizers covered: Bis‑(2‑ethylhexyl) phthalate (DOP, CAS 117‑81‑7) and Bis‑(3,5,5‑trimethylhexyl) phthalate (DINP, CAS 28553‑12‑0 / 68515‑48‑0), with specified density, refractive index and viscosity limits as per ISO 1385‑1. Note: DOP use is now restricted in Europe for hazard reasons (CLP/REACH).

Procedure highlights: Blank measurement of absorbent, weigh tube + absorbent, add specified resin mass and a measured volume/length of plasticizer, centrifuge, reweigh and compute absorbed plasticizer. Results reported as parts per hundred resin (phr).

Reporting: Include reference to ISO 4608:2023, sample ID, plasticizer type, centrifuging conditions, quantities used, test result, deviations, and date.

Applications and users

Quality control laboratories in PVC resin manufacturing.

Compounders and processors producing plasticized dry blends and formulations.

R&D and material development teams evaluating resin/plasticizer compatibility.

Regulatory and compliance testing where plasticizer uptake affects product performance or safety. The method supports decisions on plasticizer selection, dry‑blend formulation, batch acceptance and troubleshooting of mixing/compatibilization issues.

Related standards

ISO 24024‑1 - designation system for PVC resins

ISO 1385‑1 - phthalate ester test methods

ISO 8655‑2 - piston‑operated volumetric apparatus (pipettes)

Keywords: ISO 4608:2023, plasticizer absorption, PVC, vinyl chloride resins, DINP, DOP, centrifuge method, room temperature absorption, dry blend, plasticizer uptake.

ISO 4608:2023 PDF

Abstract

Похожие стандарты

Overview

Key topics and requirements

Applications and users

Related standards

Технические детали

BS EN ISO 24024-1:2021

Plastics. Homopolymer and copolymer resins of vinyl chloride. Designation system and basis for specifications.

SIST EN ISO 8655-2:2022

Piston-operated volumetric apparatus - Part 2: Pipettes (ISO 8655-2:2022)

SIST EN ISO 13851:2019

Safety of machinery - Two-hand control devices - Principles for design and selection (ISO 13851:2019)