GB/T 41489-2022 English PDF

US$269.00 · In stock
Delivery: <= 3 days. True-PDF full-copy in English will be manually translated and delivered via email.
GB/T 41489-2022: Plastics - Polyamides - Determination of ε-caprolactam and ω-laurolactam by gas chromatography
Status: Valid

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 41489-2022	269	Add to Cart	3 days	Plastics - Polyamides - Determination of ε-caprolactam and ω-laurolactam by gas chromatography	Valid

Similar standards

GB/T 41873   GB/T 41874   GB/T 41880   GB/T 32366   GB/T 40006.11   

Basic data

Standard ID: GB/T 41489-2022 (GB/T41489-2022)
Description (Translated English): Plastics - Polyamides - Determination of ��-caprolactam and ��-laurolactam by gas chromatography
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: G32
Word Count Estimation: 13,185
Issuing agency(ies): State Administration for Market Regulation, China National Standardization Administration

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

---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.
Plastics -- Polyamides -- Determination of ε-caprolactam and ω-laurolactam by gas chromatography ICS 83.080.20 CCSG32 National Standards of People's Republic of China Determination of plastic polyamide by gas chromatography ε-Caprolactam and ω-Laurolactam (ISO 11337.2010, MOD) Published on 2022-04-15 2022-11-01 Implementation State Administration for Market Regulation Released by the National Standardization Administration

foreword

This document is in accordance with the provisions of GB/T 1.1-2020 "Guidelines for Standardization Work Part 1.Structure and Drafting Rules of Standardization Documents" drafted. This document is modified using ISO 11337.2010 "Determination of ε-caprolactam and ω-laurolactam by gas chromatography on plastic polyamides amine". This document has the following structural adjustments compared to ISO 11337.2010. --- Added informative appendix A "Typical chromatograms of ε-caprolactam and ω-laurolactam in polyamides", the ISO 11337.2010 The chromatogram in 5.8 is adjusted to Appendix A. The technical differences between this document and ISO 11337.2010 and their reasons are as follows. --- Added the normative reference document GB/T 6682 to adapt to the technical conditions of our country (see Chapter 2, 4.2, 5.2); --- Added the normative reference document GB/T 9722 to adapt to my country's technical conditions (see Chapter 2, 4.3.7, 5.3.1); --- In order to adapt to the actual situation in my country, the description of the detector and chromatographic column has been adjusted (see 4.3.7, 5.3.1, Table 1, Table 3); --- In order to adapt to the actual situation in my country, the accuracy of the addition amount of the internal standard solution is modified to 0.01mL (see Chapter 4 and Chapter 5); --- In order to adapt to the actual situation in my country, the number of parallel measurements has been increased (see 4.5.6, 5.4.6). Please note that some content of this document may be patented. The issuing agency of this document assumes no responsibility for identifying patents. This document is proposed by China Petroleum and Chemical Industry Federation. This document is under the jurisdiction of the National Plastics Standardization Technical Committee (SAC/TC15). This document is drafted by. China Pingmei Shenma Group Nylon Technology Co., Ltd., Henan Shenma Nylon Chemical Co., Ltd., Guangzhou Henan Co., Ltd. Finished Materials Research Institute Co., Ltd., Qingdao City Product Quality Supervision and Inspection Research Institute, Xiamen Guanyan Plastic Technology Co., Ltd., Shunde District, Foshan City Quality and Technical Supervision Standards and Coding Institute, China Blue Chenguang Chengdu Testing Technology Co., Ltd., Dongguan Longde Shoe Material Co., Ltd., CGN Juner (Zhejiang) New Materials Co., Ltd., Qingdao Shenghui Plastic Co., Ltd. The main drafters of this document. Li Benbin, Shi Hongjun, Wang Haojiang, Qiao Haiqing, Luo Xiaoxia, Qiu Shanglong, Wang Fang, Zhu Wencheng, Zhou Huijun, Xu Yongfeng, Wu Huawen, Ding Chong, Chang Weihua, Zhao Leying, Wang Xiaobin. Determination of plastic polyamide by gas chromatography ε-Caprolactam and ω-Laurolactam Caution - Persons using this document should have practical experience in formal laboratory work. This document does not address all possible security issues question. It is the user's responsibility to take appropriate safety and health measures and to ensure compliance with the conditions stipulated by relevant national regulations.

1 Scope

This document specifies a method for the determination of ε-caprolactam and ω-laurolactam in polyamides by gas chromatography. This document applies to the determination of ε-caprolactam and ω-laurolactam content in polyamides. This document describes methods for the determination of ε-caprolactam and ω-laurolactam by methanol extraction and solvent dissolution. --- Method A is the methanol extraction method, take an appropriate amount of the extract and inject it into the gas chromatograph; --- Method B is the solvent dissolution method, take an appropriate amount of dissolved solution and inject it into the gas chromatograph.

2 Normative references

The contents of the following documents constitute essential provisions of this document through normative references in the text. Among them, dated citations documents, only the version corresponding to that date applies to this document; for undated references, the latest edition (including all amendments) applies to this document. GB/T 2035 Plastic Terms and Definitions (GB/T 2035-2008, ISO 472.1999, IDT) GB/T 6005 Test sieve wire mesh, perforated plate and basic size of electroformed sheet mesh (GB/T 6005- 2008, ISO 565.1990, MOD) GB/T 6682 Analysis Laboratory Water Specifications and Test Methods (GB/T 6682-2008, ISO 3696.1987, MOD) GB/T 9722 General Rules for Gas Chromatography of Chemical Reagents

3 Terms and Definitions

Terms and definitions defined in GB/T 2035 apply to this document. 4 Method A (methanol extraction method) 4.1 Overview The test sample was extracted with boiling methanol, and a small amount of the extract was injected into a gas chromatograph equipped with a hydrogen flame ionization detector for separation and detection. Measure volatile components. 1-Lauryl alcohol was added to the extract as an internal standard. 4.2 Reagents Unless otherwise stated, all reagents are of analytical grade and first-grade water in accordance with GB/T 6682. 4.2.1 Methanol. chromatographically pure. ......

Image     

Tips & Frequently Asked Questions:

Question 1: How long will the true-PDF of GB/T 41489-2022_English be delivered?

Answer: Upon your order, we will start to translate GB/T 41489-2022_English as soon as possible, and keep you informed of the progress. The lead time is typically 1 ~ 3 working days. The lengthier the document the longer the lead time.

Question 2: Can I share the purchased PDF of GB/T 41489-2022_English with my colleagues?

Answer: Yes. The purchased PDF of GB/T 41489-2022_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.