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GB/T 34694-2017 English PDF

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GB/T 34694-2017: Plastic -- Determination of residual chloride content of chlorinated poly (vinyl chloride) resins -- Potentiometric titration method
Status: Valid
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GB/T 34694-2017English119 Add to Cart 3 days [Need to translate] Plastic -- Determination of residual chloride content of chlorinated poly (vinyl chloride) resins -- Potentiometric titration method Valid GB/T 34694-2017

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Basic data

Standard ID GB/T 34694-2017 (GB/T34694-2017)
Description (Translated English) Plastic -- Determination of residual chloride content of chlorinated poly (vinyl chloride) resins -- Potentiometric titration method
Sector / Industry National Standard (Recommended)
Classification of Chinese Standard G32
Classification of International Standard 83.080.20
Word Count Estimation 6,686
Date of Issue 2017-11-01
Date of Implementation 2018-05-01
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 34694-2017: Plastic -- Determination of residual chloride content of chlorinated poly (vinyl chloride) resins -- Potentiometric titration method


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Plastic-Determination of residual chloride content of chlorinated poly (vinyl chloride) resins-Potentiometric titration method ICS 83.080.20 G32 National Standards of People's Republic of China Plastic chlorinated polyvinyl chloride resin Determination of residual chlorine content potentiometric titration poly (vinylchloride) resins-Potentiometrictitrationmethod Posted.2017-11-01 2018-05-01 implementation General Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China China National Standardization Administration released

Foreword

This standard was drafted in accordance with the rules given in GB/T 1.1-2009. This standard proposed by the China Petroleum and Chemical Industry Federation. This standard by the National Standardization Technical Committee polyvinyl chloride resin products Branch (SAC/TC15/SC7) centralized. This standard was drafted by Hangzhou Electric Group Co., Ltd., Xinjiang Tianye (Group) Co., Ltd., Jinxi Chemical Research Institute Co., Ltd., Hangzhou State Electrochemical New Materials Co., Ltd. The main drafters of this standard. Li Furong, Chen Peiyun, Wang Guangyu, Wang Shuo, to Zheng Liang. Plastic chlorinated polyvinyl chloride resin Determination of residual chlorine content potentiometric titration

1 Scope

This standard specifies the method of determination of residual chlorine content in chlorinated polyvinyl chloride resin. This standard applies to chlorinated polyvinyl chloride resin.

2 Normative references

The following documents for the application of this document is essential. For dated references, only the dated version applies to this article Pieces. For undated references, the latest edition (including all amendments) applies to this document. GB/T 6682 analytical laboratory water specifications and test methods GB/T 9725-2007 Chemical reagent potentiometric titration method

3 Terms and definitions

The following terms and definitions apply to this document. 3.1 Residual chlorine residualchloride Chloride (Cl-) and/or non-chlorinated free chlorine (Cl2) present in the chlorinated polyvinyl chloride resin.

4 principle

The sample is dissolved in an appropriate solvent, the prescribed electrode immersed in the same sample solution was measured, the titration process, the reference electrode potential Remain constant, indicating the potential of the electrode changes with the concentration of the tested substance. Before and after the stoichiometry, the concentration of the measured substance in the solution Changes will lead to dramatic changes in the electrode potential, electrode jump point indicates the end point of the titration.

5 reagent

5.1 General Provisions The reagents and water used in this method, when not specified otherwise, refer to analytical reagents or above and GB/T 6682 The provisions of the three water or rather pure water. 5.2 Hydrogen peroxide. 5.3 hydrochloric acid - dimethylacetamide solution. 0.0005mol/L. Pipette 5mL0.1mol/L hydrochloric acid solution into 1000mL volumetric flask, diluted with dimethyl acetamide to the mark, shake. 5.4 silver nitrate - dimethylacetamide standard titration solution. C = 0.02mol/L. According to Appendix A calibration. Solution stored in brown bottle in. Valid for 1 month.

6 equipment

6.1 General laboratory equipment.

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