GB/T 20388-2016 English PDF

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 20388-2016	75	Add to Cart	Auto, < 3 mins	Textiles -- Determination of the phthalate content -- Tetrahydrofuran method	Valid
GB/T 20388-2006	359	Add to Cart	3 days	Textiles -- Determination of the content of phthalates	Obsolete

Similar standards

GB/T 20385.1   GB/T 19981.2   GB/T 19981.1   GB/T 20384   GB/T 20392   

Basic data

Standard ID: GB/T 20388-2016 (GB/T20388-2016)
Description (Translated English): Textiles -- Determination of the phthalate content -- Tetrahydrofuran method
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: W04
Classification of International Standard: 59.080.01
Word Count Estimation: 15,156
Date of Issue: 2016-04-25
Date of Implementation: 2016-11-01
Older Standard (superseded by this standard): GB/T 20388-2006
Regulation (derived from): National Standard Announcement No
Issuing agency(ies): General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China

GB/T 20388-2016: Textiles -- Determination of the phthalate content -- Tetrahydrofuran method

---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
Textiles - Determination of the phthalate content - Tetrahydrofuran method ICS 59.080.01 W04 National Standards of People's Republic of China Replace GB/T 20388-2006 Textiles - Determination of phthalates Tetrahydrofuran method (ISO 14389..2014, MOD) 2016-04-25 released 2016-11-01 implementation General Administration of Quality Supervision, Inspection and Quarantine of the People 's Republic of China China National Standardization Management Committee released

Foreword

This standard is drafted in accordance with the rules given in GB/T 1.1-2009 and GB/T .20000.2-2009. This standard replaces GB/T 20388-2006 "Determination of textile phthalate esters", compared with GB/T 20388-2006 The changes are as follows. --- modified the standard name; - adjust the type of phthalate target to be tested; - Added Chapter 2 terms and definitions; Pretreatment method Trichloromethane extraction method to tetrahydrofuran dissolution method; Quantitative method from external standard method to internal standard method; --- sample volume from 1g to 0.3g; --- refinement of the standard stock solution and working fluid preparation; --- modified the calculation of the results of the method, and increased the proportion of phthalates accounted for plasticized components of the formula; - the deletion of the original standard Appendix A "13 kinds of phthalate ester type table", Appendix B "13 kinds of phthalate quantitative and Qualitative selection of ions and determination of low-limit table "and Appendix C" phthalate standard gas chromatography-mass spectrometry selective ion color Spectrum "; - Added Appendix A, "Calculation of Quality of Plasticized Components in Samples", Appendix B "GC-MS Test Parameters Examples" and Appendix C "Chemistry Method to determine the quality of PVC coating ". This standard uses the re-drafting method to modify ISO 14389..2014 "Determination of textile phthalate tetrahydrofuran method" The main differences with ISO 14389..2014 are as follows. - the introduction of the introduction of international standards, preface and some references; --- 5.6 of the pipette specifications increased by 0.5mL, 1mL; --- an increase of 5.10 "centrifugal device"; - Added a chromatogram of the phthalate standard in Appendix B; --- simplified information on Appendix C, the deletion of the information Appendix D; --- Replace the ISO 1833.1 in the reference with the corresponding GB/T 2910.1. This standard is proposed by China Textile Industry Federation. This standard is under the jurisdiction of the National Textile Standardization Technical Committee (SAC/TC209). The drafting unit of this standard. China Textile Standard (Beijing) Inspection and Certification Center Co., Ltd., Jilin Entry-Exit Inspection and Quarantine Bureau. The main drafters of this standard. Si Ying, Mu Jun, Zheng Yuying, well Tingting, Li Aijun. This standard replaced the previous version of the standard release. --- GB/T 20388-2006. Textiles - Determination of phthalates Tetrahydrofuran method WARNING. Personnel using this standard should have practical experience in formal laboratory work. This standard does not indicate all possible security issues. It is the responsibility of the user to take appropriate safety and health measures and to ensure compliance with the conditions set forth in the relevant national regulations.

1 Scope

This standard specifies the use of tetrahydrofuran as solvent, the use of gas chromatography-mass spectrometry (GC-MS) determination of phthalates in textiles Ester method. This standard applies to textile products that may contain certain phthalates.

2 terms and definitions

The following terms and definitions apply to this document. 2.1 Plasticizing material or softening material plasticizedorsoftenedmaterial After the chemical treatment of more flexible plastic materials. Note. The chemical substances in this standard are phthalates. Examples of plastic materials. coating agents, paint printing adhesives and so on. 2.2 Whole processing of textiles overaltreatedtextile Continuous finishing, coating or printing and dyeing of textiles. 2.3 Local processing of textiles localytreatedtextile Non-continuous finishing, coating or printing and dyeing of textiles. 2.4 Representative sample representativespecimen Samples obtained from different treatment sites of the sample.

3 principle

Using an ultrasonic generator in tetrahydrofuran as a solvent, dissolving the plasticized polymer in the sample in whole or in part, using a suitable solvent (Acetonitrile, n-hexane, etc.) to precipitate the dissolved polymer and extract the phthalate. The extract was centrifuged and diluted and fixed Determination of Phthalate by Gas Chromatography - Mass Spectrometry (GC - MS) and quantification by internal standard method.

4 reagent

Unless otherwise specified, the reagents used are of analytical grade. 4.1 tetrahydrofuran, CAS No. 109-99-9. 4.2 precipitants, for example. ......

Tips & Frequently Asked Questions:

Question 1: How long will the true-PDF of GB/T 20388-2016_English be delivered?

Answer: Upon your order, we will start to translate GB/T 20388-2016_English as soon as possible, and keep you informed of the progress. The lead time is typically in 9 seconds (download/delivered in 9 seconds). The lengthier the document the longer the lead time.

Question 2: Can I share the purchased PDF of GB/T 20388-2016_English with my colleagues?

Answer: Yes. The purchased PDF of GB/T 20388-2016_English will be deemed to be sold to your employer/organization who actually pays for it, including your colleagues and your employer's intranet.

Question 3: Does the price include tax/VAT?

Answer: Yes. Our tax invoice, downloaded/delivered in 9 seconds, includes all tax/VAT and complies with 100+ countries' tax regulations (tax exempted in 100+ countries) -- See Avoidance of Double Taxation Agreements (DTAs): List of DTAs signed between Singapore and 100+ countries

Question 4: Do you accept my currency other than USD?

Answer: Yes. If you need your currency to be printed on the invoice, please write an email to Sales@ChineseStandard.net. In 2 working-hours, we will create a special link for you to pay in any currencies. Otherwise, follow the normal steps: Add to Cart -- Checkout -- Select your currency to pay.

Question 5: Should I purchase the latest version GB/T 20388-2016?

Answer: Yes. Unless special scenarios such as technical constraints or academic study, you should always prioritize to purchase the latest version GB/T 20388-2016 even if the enforcement date is in future. Complying with the latest version means that, by default, it also complies with all the earlier versions, technically.