GB/T 33426-2016 English PDF

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GB/T 33426-2016: Rubber shoes -- Determination of organotin compounds
Status: Valid

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 33426-2016	199	Add to Cart	3 days	Rubber shoes -- Determination of organotin compounds	Valid

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Basic data

Standard ID: GB/T 33426-2016 (GB/T33426-2016)
Description (Translated English): Rubber shoes -- Determination of organotin compounds
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: Y78
Classification of International Standard: 61.060
Word Count Estimation: 10,197
Date of Issue: 2016-12-30
Date of Implementation: 2017-07-01
Regulation (derived from): National Standard Notice No.27 of 2016
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 33426-2016: Rubber shoes -- Determination of organotin compounds

---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.
Rubber shoes - Determination of organotin compounds ICS 61.060 Y78 National Standards of People's Republic of China Test method for the content of organic tin compounds in rubber shoes 2016-12-30 release 2017-07-01 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. This standard is proposed by the China Petroleum and Chemical Industry Association. This standard by the National Rubber and Rubber Products Standardization Technical Committee rubber shoes sub-technical committee (SAC/TC35/SC9) centralized. The drafting of this standard. Xiamen in the fast German Detection Technology Co., Ltd., Jiangsu Tianrui Instrument Co., Ltd., Shanghai back to the footwear industry Co., Ltd., Quanzhou Xintai Shoes Co., Ltd., Yuanhong (Fujian) Industrial Co., Ltd., Jinjiang Chengchang Shoes Co., Ltd., Quanzhou Tong standard technology Technology Service Co., Ltd., Quanzhou City Standardization Association, Putian City Entry-Exit Inspection and Quarantine Bureau, Fujian Entry-Exit Inspection and Quarantine Bureau, Fujian Huafeng New Material Co., Ltd., Quanzhou Jinke Technology Inspection Co., Ltd., Qingdao Global Group Co., Ltd., Dongguan Hengyu Instrument Co., Ltd. The main drafters of this standard. Cai Zhijie, Lu Peiqi, Ma Yanhong, Zheng Jianming, Wu Tianci, Lin Zhijie, Li Huawei, Zhuang glory, Liu Xiaopeng, Xu Chunshu, Sun Xu, Tang Zhenhua, Min Baogan, Luo Xianfa, Li Tianyuan, Liu Long Test method for the content of organic tin compounds in rubber shoes Caution - Personnel using this standard should have practical experience in formal laboratory work. This standard does not indicate all possible security questions 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 determination of organotin compounds in rubber shoes by gas chromatography-mass spectrometry. This standard applies to the determination of organotin compounds in rubber materials.

2 normative reference documents

The following documents are indispensable for the application of this document. For dated references, only the dated edition applies to this article Pieces. For undated references, the latest edition (including all modifications) applies to this document. GB/T 6682 Analytical laboratory water specifications and test methods

3 Principle of the method

In the acidic condition, the organotin compound in the rubber material is composed of the mixture of methanol and ethanol. After extraction, the alkylation reaction was carried out with sodium tetraethylborate, and the mixture was extracted with n-hexane and analyzed by gas chromatography-mass spectrometry (GC/MSD) Quantitative and internal standard method.

4 reagents and materials

4.1 glacial acetic acid (analytical grade). 4.2 Sodium acetate (analytical grade). 4.3 Ethanol (analytical grade). 4.4 Methanol (analytical grade, chromatographic purity). 4.5 tetrahydrofuran (chromatographic purity). 4.6 n-hexane (chromatographic purity). 4.7 acetic acid - sodium acetate buffer solution, 1mol/L, pH = 4.5. Weigh 136g sodium acetate trihydrate in a clean beaker, add the appropriate amount of pure water Dissolved, adjusted to pH 4.5 with glacial acetic acid, transferred to 1000mL volumetric flask, fixed to the scale. 4.8 0.2 g/mL Sodium tetraethylborate solution. In an isolated air condition, 2 g of sodium tetraethylborate (NaBEt4) was weighed into 10 mL of brown Flask, dissolved with tetrahydrofuran, constant volume. The solution concentration was 0.2 g/mL. Note. This solution (-18 ± 4) ℃ preservation, valid for 6 months. 4.9 0.005 g/mL cycloheptatrienol solution. Weigh 0.5 g of cycloheptatrienol to 100 mL beaker, add about 50 mL of methanol Solution, completely dissolved, transferred to 100mL volumetric flask, constant volume. Note. This solution (4 ± 2) ℃ preservation, valid for 1 month. 4.10 three water, in line with GB/T 6682 requirements. ......

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