GB/T 38271-2025 Active National standards

GB/T 38271-2025 Plastics—Determination of residual styrene monomer in polystyrene(PS),impact-resistant polystyrene(PS-I),acrylonitrile-butadiene-styrene(ABS) and styrene-acrylonitrile(SAN) resin—Gas chromatography

GB/T 38271-2025 Plastics—Determination of residual styrene monomer in polystyrene(PS),impact-resistant polystyrene(PS-I),acrylonitrile-butadiene-styrene(ABS) and styrene-acrylonitrile(SAN) resin—Gas chromatography

Publish Date: 2025-12-02 Implement Date: 2026-07-01 For services related to genuine standard inquiry, procurement, translation, and other related services in China, please Contact Us

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Basic Information

Standard Code: GB/T 38271-2025

Standard Type: National standards

Standard Status: Active

is_force_gb: no

CCS Name: Basic standards and general methods for synthetic resins and plastics

ICS Name: Thermoplastic plastics

Publish Date: 2025-12-02

Implement Date: 2026-07-01

Pages: 20 pages

Scope

This document describes the method for determining the residual styrene monomer content in polystyrene (PS), impact-resistant polystyrene (PS-I), acrylonitrile-butadiene-styrene (ABS), and styrene-acrylonitrile (SAN) resins using gas chromatography:
—— Method A: Solution method;
—— Method B: Solution-precipitation method;
—— Method C: Headspace method.
This document is applicable to determining the residual styrene monomer content in PS, PS-I, ABS, and SAN resins, and is also suitable for simultaneously determining the content of other volatile aromatic hydrocarbons in the samples.

Development Information

Word Count: 31 Thousand words Pages: 20 pages

Replace the following standards

GB/T 16867-1997 Determination of residual styrene monomer in polystyrene and acrylonitrile-butadiene-styrene resins by gas chromatography GB/T 38271-2019 Plastics—Determination of residual styrene monomer in polystyrene(PS) and impact-resistant polystyrene(PS-I)—Gas chromatography

Referenced Standards

GB/T 2035-1996 Terms and definitions for plastics GB/T 2035-2008 Terms and definitions for plastics GB/T 2035-2024 Plastics—Vocabulary GB/T 12806-1991 Laboratory glassware—One-mark volumetric flasks GB/T 12806-2011 Laboratory glassware—One-mark volumetric flasks GB/T 12808-1991 Laboratory glassware—One-mark pipettes GB/T 12808-2015 Laboratory glassware—One mark pipettes

Adopt standards

ISO 2561:2023

Related Standards

GB/T 6595-1986 Replaced

GB/T 6595-1986 Test method for fish eye count of polypropylene resin

Publish Date: 1986-07-24

GB/T 6598-1986 Active

GB/T 6598-1986 Determination of weight-average molecular weight of polystyrene standards by low angle laser light scattering method

Publish Date: 1986-07-24

GB/T 6599-1986 abolished_transferred

GB/T 6599-1986 Determination of molecular weight averages and molecular weight distribution of polystyrene standards by steric exclusion chromatography

Publish Date: 1986-07-24

GB/T 8330-1987 Replaced

GB/T 8330-1987 Method for the determination of true density of ion exchange resins in wet state

Publish Date: 1987-11-15

GB/T 8331-1987 Replaced

GB/T 8331-1987 Method for the determination of bulk density of ion exchange resins in wet state

Publish Date: 1987-11-15

GB/T 8324-1987 Replaced

GB/T 8324-1987 Test method for bulk factor of moulding materials

Publish Date: 1987-12-01