GB/T 41489-2022 Active National standards

GB/T 41489-2022 Plastics—Polyamides—Determination of ε-caprolactam and ω-laurolactam by gas chromatography

GB/T 41489-2022 Plastics—Polyamides—Determination of ε-caprolactam and ω-laurolactam by gas chromatography

Publish Date: 2022-04-15 Implement Date: 2022-11-01 For services related to genuine standard inquiry, procurement, translation, and other related services in China, please Contact Us

Basic Information

Standard Code: GB/T 41489-2022

Standard Type: National standards

Standard Status: Active

is_force_gb: no

CCS Name: Synthetic resins and plastics

ICS Name: Thermoplastic plastics

Publish Date: 2022-04-15

Implement Date: 2022-11-01

Pages: 13 pages

Scope

This document specifies the method for determining ε-caprolactam and ω-dodecanolactam in polyamides by gas chromatography.
This document is applicable to the determination of the content of ε-caprolactam and ω-dodecanolactam in polyamides.
This document describes the methods of methanol extraction and solvent dissolution for determining ε-caprolactam and ω-dodecanolactam.
—— Method A is the methanol extraction method, in which an appropriate amount of extract solution is injected into the gas chromatograph;
—— Method B is the solvent dissolution method, in which an appropriate amount of dissolved solution is injected into the gas chromatograph.

Development Information

Word Count: 24 Thousand words Pages: 13 pages

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 6005-1997 Test sieves—Metal wire cloth, perforated metal plate and electroformed sheet—Nominal sizes of opening GB/T 6005-2008 Test sieves—Metal wire cloth,perforated metal plate and electroformed sheet—Nominal sizes of openings GB/T 6682-1992 Water for analytical laboratory use—Specification and test methods GB/T 6682-2008 Water for analytical laboratory use—Specification and test methods GB/T 9722-2006 Chemical reagent—General rules for the gas chromatography GB/T 9722-2023 Chemical reagent—General rules for the gas chromatography

Adopt standards

ISO 11337:2010

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