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GB/T 38286-2019 English PDF

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GB/T 38286-2019: Polyethylene (PE), polypropylene (PP) and polystyrene (PS) resin - Determination of peroxide value
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GB/T 38286-2019English119 Add to Cart 3 days [Need to translate] Polyethylene (PE), polypropylene (PP) and polystyrene (PS) resin - Determination of peroxide value Valid GB/T 38286-2019

PDF similar to GB/T 38286-2019


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Basic data

Standard ID GB/T 38286-2019 (GB/T38286-2019)
Description (Translated English) Polyethylene (PE), polypropylene (PP) and polystyrene (PS) resin - Determination of peroxide value
Sector / Industry National Standard (Recommended)
Classification of Chinese Standard G31
Classification of International Standard 83.080.01
Word Count Estimation 6,662
Date of Issue 2019-12-10
Date of Implementation 2020-11-01
Issuing agency(ies) State Administration for Market Regulation, China National Standardization Administration

GB/T 38286-2019: Polyethylene (PE), polypropylene (PP) and polystyrene (PS) resin - Determination of peroxide value


---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.
Polyethylene (PE), polypropylene (PP) and polystyrene (PS) resin--Determination of peroxide value ICS 83.080.01 G31 National Standards of People's Republic of China Polyethylene, polypropylene, polystyrene resin Determination of peroxide value 2019-12-10 release 2020-11-01 implementation State Administration of Market Supervision and Administration Issued by the National Standardization Management Committee

Foreword

This standard was drafted in accordance with the rules given in GB/T 1.1-2009. This standard was proposed by the China Petroleum and Chemical Industry Federation. This standard is under the jurisdiction of the National Plastic Standardization Technical Committee (SAC/TC15). This standard was drafted by. China Inspection and Certification Group Ningbo Co., Ltd., Ningbo Customs of the People's Republic of China, Guangzhou Special Pressure Equipment Inspection Research Institute, China Blue Chenguang Chengdu Inspection Technology Co., Ltd., Qingdao Dagang Customs of the People's Republic of China, Guangzhou Quality Supervision and Inspection Research Institute, Taicang Customs of the People's Republic of China. The main drafters of this standard. Wu Beilei, Ye Jiamei, Luo Chuan, Li Maodong, Luo Xiaoxia, Chen Minjian, Gao Jianguo, Wang Wanjuan, Huang Guo, Song Changsheng Yu Qiaoling. Polyethylene, polypropylene, polystyrene resin Determination of peroxide value

1 Scope

This standard specifies the method for determining the peroxide value of polyethylene, polypropylene and polystyrene resins. This standard is applicable to the determination of peroxide value of polyethylene, polypropylene and polystyrene resins. Note. Other resins can be measured with reference to this standard.

2 Normative references

The following documents are essential for the application of this document. For dated references, only the dated version applies to this article Pieces. For the cited documents without date, the latest version (including all amendments) applies to this document. Preparation of GB/T 601 chemical reagent standard titration solution GB/T 6682 Analysis laboratory water specifications and test methods

3 Terms and definitions

The following terms and definitions apply to this document. 3.1 Peroxide value Ip The amount of peroxide that can react with sodium thiosulfate in the sample is expressed in millimoles of active oxygen contained in 1000g of sample.

4 Method summary

The sample is immersed in the mixed solution of chloroform/acetic acid, the peroxide dissolved in the solution reacts with the excess potassium iodide solution to generate iodine, and sulfur Titrate with sodium titrate standard titration solution to calculate the peroxide value of the sample.

5 Reagents and materials

Warning --- Chloroform is a volatile solvent. In order to avoid possible poisoning of the reagents, please protect and keep the experiment personnel in use. Good ventilation. Unless otherwise specified, the reagents used are of analytical grade, and the experimental water should meet the requirements of secondary water specified in GB/T 6682. 5.1 Chloroform. superior grade pure. 5.2 Acetic acid. pure grade. 5.3 Chloroform/acetic acid mixed solution. Mix according to the volume ratio of 2. 3. 5.4 Saturated potassium iodide solution. 14g potassium iodide, add 10mL of water to dissolve, ensure that there are insoluble crystals, sealed and protected from light. 5.5 Sodium thiosulfate solution. c (Na2S2O3) = 0.1mol/L. Prepare and calibrate according to the requirements of GB/T 601. 5.6 Sodium thiosulfate standard titration solution. c (Na2S2O3) = 0.01mol/L. It is obtained by diluting 5.5 times by 5.5.

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