GB/T 2910.12-2023 Textiles—Quantitative chemical analysis—Part 12:Mixtures of acrylic,certain modacrylics,certain chlorofibres,certain elastane fibres with certain other fibres(method using dimethylformamide)

Scope

This document describes the method of determining the content of polyacrylonitrile fibers, modified polyacrylonitrile fibers, chlorine-containing fibers, or polyurethane elastic fibers in the following two mixtures after removing non-fiber substances using the dimethylformamide method: -- polyacrylonitrile fibers, certain modified polyacrylonitrile fibers, certain chlorine-containing fibers, and certain polyurethane elastic fibers; and -- sheep's wool, other animal hair fibers, silk, cotton, viscose fibers, cuprammonium fibers, modal fibers, lyocell fibers, polyamide fibers, polyester fibers, polypropylene fibers, polyester composite elastic fibers, polyolefin elastic fibers, melamine fibers, polypropylene/polyamide composite fibers, polyacrylate fibers, and glass fibers. This document is not applicable to textiles containing sheep's wool, other animal hair fibers, and silk that have been dyed with chromium-mordant dyes.

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