Standard No.:	GB/T 29493.9-2023
English Name:	Determination of harmful substances in textile dyeing and finishing auxiliaries—Part 9:Determination of acrylamides
Chinese Name:	纺织染整助剂中有害物质的测定 第9部分：丙烯酰胺类物质的测定
Chinese Classification:	G70    Basic standards and general methods for chemical additive
Professional Classification:	GB    National Standard
ICS Classification:	71.100.40 71.100.40    Surface active agents 71.100.40
Source Content Issued by:	SAMR; SAC
Issued on:	2023-9-7
Implemented on:	2024-4-1
Status:	valid
Superseding:	GB/T 29493.9-2014 Determination of harmful substances in textile dyeing and finishing auxiliaries―Part 9:Determination of acrylamide
Target Language:	English
File Format:	PDF
Word Count:	7500 words
Translation Price(USD):	240.0
Delivery:	via email in 1~3 business day

Foreword Codeofchina.com is in charge of this English translation. In case of any doubt about the English translation, the Chinese original shall be considered authoritative. This document is developed in accordance with the rules given in GB/T 1.1-2020 Directives for standardization - Part 1: Rules for the structure and drafting of standardizing documents. This document is Part 9 of GB/T 29493 Determination of harmful substances in textile dyeing and finishing auxiliaries, of which the following parts have already been issued: ——Part 1: Determination of the prohibited or restricted flame retardants; ——Part 2: Determination of perfluorinated compounds (PFCs). ——Part 3: Determination of organotins; ——Part 4: Determination of polycyclic aromatic hydrocarbons (PAHs); ——Part 5: Determination of free formaldehyde in emulsion polymers; ——Part 6: Determination of isocyanate groups in polyurethane prepolymers; ——Part 7: Determination of monomeric diisocyanates in polyurethane coating agent; ——Part 8: Determination of residual monomers in polyacrylate; ——Part 9: Determination of acrylamides. Introduction The ecological security of textile products is an important requirement of global textile and apparel trade. For textile dyeing and finishing auxiliaries, as special chemicals for textiles, strengthening the detection and control of harmful substances from the source is conducive to reducing the risk of harmful substances in downstream textile products and ensuring personal health and safety. At present, there are many requirements for the control of harmful substances at the consumer end of the textile industry. GB/T 29493 aims to formulate the detection method standard of main harmful substances in the textile dyeing and finishing auxiliaries industry. GB/T 29493 is proposed to be composed of 9 parts, which target different harmful substances, respectively. ——Part 1: Determination of the prohibited or restricted flame retardants. ——Part 2: Determination of perfluorinated compounds (PFCs). ——Part 3: Determination of organotins; ——Part 4: Determination of polycyclic aromatic hydrocarbons (PAHs). ——Part 5: Determination of free formaldehyde in emulsion polymers. ——Part 6: Determination of isocyanate groups in polyurethane prepolymers. ——Part 7: Determination of monomeric diisocyanates in polyurethane coating agent. ——Part 8: Determination of residual monomers in polyacrylate. ——Part 9: Determination of acrylamides. In recent years, the types of organotin compounds concerned by the upstream and downstream of the industrial chain have gradually increased. This document is revised in combination with the focus of the industry and the progress of testing technology, which improves the scientificity and applicability of the standard, realizes the source detection and control of organotin compounds, and is conducive to promoting the reduction and substitution of harmful substances in the industry. Determination of harmful substances in textile dyeing and finishing auxiliaries - Part 9: Determination of acrylamides WARNING - Persons using this document shall be familiar with normal laboratory practice. This document does not purport to address all of the safety problems. It is the responsibility of the user to establish appropriate safety and health practices and to ensure compliance with any national regulatory conditions. 1 Scope This document describes a method for the determination of acrylamides in textile dyeing and finishing auxiliaries by liquid chromatography (IC). This document is applicable to the determination of acrylamide substances in textile dyeing and finishing auxiliaries (see Annex A). 2 Normative references The following documents contain requirements which, through reference in this text, constitute provisions of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. GB/T 6682 Water for analytical laboratory use - Specification and test methods GB/T 8170-2008 Rules of rounding off for numerical values & expression and judgment of limiting values 3 Terms and definitions No terms and definitions are listed in this standard. 4 Principle The acrylamides in the textile dyeing and finishing auxiliaries were extracted, filtered and purified, and then determined by high performance liquid chromatography equipped with a diode array detector and quantified by external standard method.

Foreword i Introduction ii 1 Scope 2 Normative references 3 Terms and definitions 4 Principle 5 Reagents or materials 6 Instruments and equipment 7 Test procedures 8 Test data processing 9 Lower determination limit, recovery rate and precision 10 Test report Annex A ((Informative) Information on acrylamide substances Annex B (Informative) Liquid chromatogram of acrylamide substances Annex C (Informative) Ultraviolet spectrogram of acrylamide substances