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GB/T 40907-2021 English PDF

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US$159.00 · In stock
Delivery: <= 3 days. True-PDF full-copy in English will be manually translated and delivered via email.
GB/T 40907-2021: Methods for the determination of prohibited substances in furniture products and related materials -- 2, 4-diaminotoluene and 4, 4'-methylenedianiline
Status: Valid

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 40907-2021	159	Add to Cart	3 days	Methods for the determination of prohibited substances in furniture products and related materials -- 2, 4-diaminotoluene and 4, 4'-methylenedianiline	Valid

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Basic data

Standard ID: GB/T 40907-2021 (GB/T40907-2021)
Description (Translated English): Methods for the determination of prohibited substances in furniture products and related materials -- 2, 4-diaminotoluene and 4, 4'-methylenedianiline
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: Y80
Word Count Estimation: 8,842
Issuing agency(ies): State Administration for Market Regulation, China National Standardization Administration

GB/T 40907-2021: Methods for the determination of prohibited substances in furniture products and related materials -- 2, 4-diaminotoluene and 4, 4'-methylenedianiline

---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.
Methods for the determination of prohibited substances in furniture products and related materials - 2, 4-diaminotoluene and 4, 4'-methylenedianiline ICS 97.140 CCSY80 National Standards of People's Republic of China Method for determination of prohibited and restricted substances in furniture products and materials 2,4-Diaminotoluene, 4,4'-Diaminodiphenylmethane Released on 2021-10-11 2022-05-01 implementation State Administration of Market Supervision and Administration Issued by the National Standardization Management Committee

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" Drafting. Please note that some of the contents of this document may involve patents. The issuing agency of this document is not responsible for identifying patents. This document was proposed by the China National Light Industry Council. This document is under the jurisdiction of the National Furniture Standardization Technical Committee (SAC/TC480). This document was drafted by. Zhejiang Light Industry Quality Inspection and Research Institute, Foshan Youzu Furniture Co., Ltd., Zhejiang Yunzhongma Co., Ltd. Co., Ltd., Zhejiang Fengcai Home Furnishing Co., Ltd., Zhejiang Ronghua Furniture Co., Ltd., Zhejiang Meisheng Smart Home Co., Ltd., Shanghai Quality Supervision Inspection Technology Research Institute, Guangdong Product Quality Supervision and Inspection Institute, Beijing Product Quality Supervision and Inspection Institute, Shenzhen Metrology and Quality Inspection Research Institute Research Institute (Group) Co., Ltd., Foshan Huizhi Chuangying Technology Service Co., Ltd., Jiangxi Furniture Product Quality Supervision and Inspection Center, Xiamen Menming Hongtang Arts & Crafts Co., Ltd., Wanhua Chemical Group Co., Ltd., E-Commerce Association of Shaji Town, Suining County. The main drafters of this document. Lin Lei, Zhong Wenhan, Che Xihong, Hai Lingchao, Shi Yuting, Li Xiangwen, Ye Fuzhong, Zhang Xiangyu, Tu Chunsheng, Xie Yuan, Sun Shudong, Wu Haitao, Li Zhongping, Xian Zhuobin, Huang Can, Gu Wenhua, Liu Hairong, Liu Ruibo. Method for determination of prohibited and restricted substances in furniture products and materials 2,4-Diaminotoluene, 4,4'-Diaminodiphenylmethane Warning---The personnel using this document should have practical experience in formal laboratory work. This standard does not point out all possible safety issues question. The user is responsible for taking appropriate safety and health measures and ensuring compliance with the conditions stipulated by relevant national laws and regulations.

1 Scope

This document describes the determination method of 2,4-diaminotoluene and 4,4'-diaminodiphenylmethane in furniture products and materials. This document is applicable to the determination of 2,4-diaminotoluene and 4,4'-diaminodiphenylmethane in furniture products and materials.

2 Normative references

The contents of the following documents constitute the indispensable clauses of this document through normative references in the text. Among them, dated quotations Only the version corresponding to that date is applicable to this document; for undated reference documents, the latest version (including all amendments) is applicable to This document. GB/T 6682 Analytical laboratory water specifications and test methods

3 Terms and definitions

There are no terms and definitions that need to be defined in this document.

4 Principle

Leach the residual 2,4-diaminotoluene and 4,4'-diaminodiphenylmethane in the furniture products and their materials with hot acetic acid aqueous solution to cool Then, in a weakly alkaline environment, through liquid-liquid extraction, 2,4-diaminotoluene and 4,4'-diaminodiphenylmethane are transferred to dichloromethane, After concentration, it is determined by gas chromatography-mass spectrometer, and quantified by external standard method. Its signal response value is within a certain range with 2,4-diamine The content of methyl toluene and 4,4'-diaminodiphenylmethane is directly proportional.

5 Reagents or materials

Unless otherwise specified, only use reagents confirmed to be analytically pure and the tertiary water specified in GB/T 6682 in the analysis. 5.1 Dichloromethane. chromatographically pure. 5.2 Acetic acid solution (1%). Weigh 10g of glacial acetic acid and dissolve in water, and dilute to 1000mL. 5.3 Sodium hydroxide solution (500g/L). Weigh 50g of sodium hydroxide and dissolve in water and dilute to 100mL. 5.4 2,4-Diaminotoluene standard material (CAS number. 95-80-7). purity ≥99%; or standard solution of known concentration. 5.5 4,4'-Diaminodiphenylmethane standard material (CAS number. 101-77-9). purity ≥99%; or standard solution of known concentration. 5.6 Standard working solution. Use methylene chloride (5.1) to combine 2,4-diaminotoluene standard substance (5.4) and 4,4'-diaminodiphenylmethane standard substance Quality (5.5) is configured as a two-component mixed standard work with a mass concentration of 0.5mg/L, 1.5mg/L, 2.5mg/L, 3.5mg/L, 5mg/L Solution. Note. The mass concentration of each standard substance in the two-component mixed standard working solution is 0.5mg/L, 1.5mg/L, 2.5mg/L, 3.5mg/L, 5mg/L. ......

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Tips & Frequently Asked Questions:

Question 1: How long will the true-PDF of GB/T 40907-2021_English be delivered?

Answer: Upon your order, we will start to translate GB/T 40907-2021_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 40907-2021_English with my colleagues?

Answer: Yes. The purchased PDF of GB/T 40907-2021_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.