标准编号：ISO 1833-6:2018
中文名称：纺织品 定量化学分析 第6部分：纤维粘胶或cupro、modal、lyocell纤维的某种类型和棉纤维混纺物（蚁酸和氯化锌法）
英文名称：Textiles — Quantitative chemical analysis — Part 6: Mixtures of viscose, certain types of cupro, modal or lyocell with certain other fibres (method using formic acid and zinc chloride)
发布日期：2018-10
标准范围
This document specifies a method, using a mixture of formic acid and zinc chloride, to determine the
mass percentage of viscose, certain types of cupro, modal or lyocell, after removal of nonfibrous matter,
in textiles made of mixtures of
— viscose, certain types of cupro, modal or lyocell,
with
— cotton.
This document has been initially specifically established for mixtures of viscose, certain types of
cupro, modal or lyocell with cotton, it is also applicable to mixtures with polypropylene, elastolefin and
melamine.
IMPORTANT — If a cupro or modal or lyocell fibre is found to be present, a preliminary test is
carried out to see whether it is soluble in the reagent.
The method is not applicable to mixtures in which the cotton has suffered extensive chemical
degradation. It is not applicable when the viscose, cupro, modal or lyocell fibre is rendered incompletely
soluble by the presence of certain permanent finishes or reactive dyes that cannot be removed
completely.
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