Overview
ISO 8174:1986 specifies a precise gas chromatographic method for determining the concentrations of acetone, acetonitrile, propan-2-ol (isopropanol), and methanol in industrial-grade ethylene and propylene gases. This international standard, developed by the ISO/TC 47 committee on Chemistry, supports quality control and safety assessments by providing a reliable analytical procedure tailored for detecting these specific impurities present in gaseous samples.
The method involves passing a gas sample through water to absorb the target compounds, followed by gas chromatographic analysis using a flame ionization detector (FID). It is applicable for acetone, propan-2-ol, and methanol at concentrations above 1 mg/kg, and for acetonitrile at concentrations above 10 mg/kg.
Key Topics
Applications
-
Industrial Gas Quality Control
ISO 8174:1986 is essential for manufacturers and suppliers of ethylene and propylene who require validated methods to monitor and control impurity levels, thus ensuring product consistency and compliance with specifications.
-
Safety and Environmental Compliance
Accurate detection of volatile organic compounds (VOCs) such as acetone and methanol helps in assessing potential health and environmental risks associated with industrial gases.
-
Analytical Laboratories
Laboratories conducting routine or compliance testing of petrochemical gases benefit from this standard method to deliver precise and repeatable results, facilitating certification and regulatory adherence.
-
Research and Development
Supports R&D activities in refining purification technologies or developing new analytical instrumentation for gas analysis by providing a benchmark method.
Related Standards
-
ISO 6377 – Analysis of light hydrocarbons by gas chromatography, complementing impurity assessment methods in industrial gases.
-
ISO 7302 – Sampling of ethylene for industrial applications, ensuring representative samples are collected for methods like ISO 8174.
-
ISO 563 – Sampling procedures for propylene and butadiene gases, relevant for preparing samples for chromatographic analysis.
-
ISO 7382 & ISO 8563 – Protocols for collecting gas samples in stainless steel containers, integral to accurate impurity measurement.
These standards collectively enable comprehensive and consistent quality assessment of industrial gases, supporting global industry practices.
Keywords: ISO 8174, ethylene analysis, propylene impurities, acetone determination, acetonitrile measurement, propan-2-ol quantification, methanol detection, gas chromatography, flame ionization detector, industrial gas quality, chromatographic method, VOC analysis, petrochemical standards.
Open preview (PDF)Ethylene and propylene for industrial use — Determination of acetone, acetonitrile, propan-2-ol and methanol — Gas chromatographic method
