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GB/T 6324.9-2016: Test methods of organic chemical products -- Part 9: Determination of chloride
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Test methods of organic chemical products -- Part 9: Determination of chloride
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GB/T 6324.9-2016
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Basic data | Standard ID | GB/T 6324.9-2016 (GB/T6324.9-2016) | | Description (Translated English) | Test methods of organic chemical products -- Part 9: Determination of chloride | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | G15 | | Classification of International Standard | 71.080.01 | | Word Count Estimation | 10,153 | | 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 6324.9-2016: Test methods of organic chemical products -- Part 9: Determination of chloride---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.
Test methods of organic chemical products - Part 9. Determination of chloride
ICS 71.080.01
G15
National Standards of People's Republic of China
Organic chemical products test methods
Part 9. Determination of chlorine
Part 9.Determinationofchloride
2016-12-30 release
2017-07-01 implementation
General Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China
China National Standardization Administration released
Foreword
GB/T 6324 "Test methods for organic chemical products" is divided into the following sections.
--- Part 1. Liquid organic chemical products water miscible;
--- Part 2. Determination of dry residue after evaporation on a volatile organic liquid bath;
--- Part 3. Determination of potassium permanganate reduction;
--- Part 4. Determination of trace sulfur in organic liquid chemical products by microcoulometry;
--- Part 5. Determination of carbonyl content in organic chemical products;
--- Part 6. Determination of liquid color tristimulus colorimetry;
--- Part 7. Determination of melting color;
--- Part 8. Determination of moisture in liquid products Karl Fischer coulometric method;
--- Part 9. Determination of chlorine.
This section GB/T 6324 Part 9.
This section drafted in accordance with GB/T 1.1-2009 given rules.
This part is proposed by China Petroleum and Chemical Industry Federation.
This part of the National Chemical Standardization Technical Committee Organic Chemical Branch (SAC/TC63/SC2) centralized.
This part of the drafting unit. China Petroleum & Chemical Corporation Beijing Chemical Industry Research Institute, Luxi Chemical Industry Group Co., Ltd..
The main drafters of this section. Li Siren, Huang Yu, Yang Benhua, Huang Wen hydrogen, Sun Rainbow, Pang Yuna, Wei Xinyu, Chen Song.
Organic chemical products test methods
Part 9. Determination of chlorine
1 Scope
GB/T 6324 provisions of this part of the organic chemical products Determination of chlorine oxidation combustion - microcoulometry and turbidimetric method.
This section provides oxidation combustion - microcoulomb method for the determination of chlorine content in liquid organic chemical products. Detection range is
0.5mg/L ~ 50.0mg/L. This method does not apply to sulfur, nitrogen content greater than 0.1% (mass fraction) of the sample. If brominated in the sample
Material, iodide and inorganic chloride, will make the determination of high.
This section provides the visual turbidity method for the determination of free chlorine ions in liquid and solid organic chemical products. Detection range is
0.0003% to 0.02% (3 mg/kg to.200 mg/kg).
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 602 chemical reagent impurity standard solution preparation
GB/T 603 chemical reagent test methods used in the preparation of preparations and products
GB/T 3723 Industrial Chemical Sampling Safety General
GB/T 6680 General rules for sampling liquid chemical products
GB/T 6682 analytical laboratory water specifications and test methods
GB/T 8170 rounded repair rules and limit values of the representation and judgment
3 Oxidative combustion - microcoulometry
Caution - Some procedures specified in the test methods may result in hazardous conditions and the operator should take appropriate safety and protective measures.
3.1 method principle
The liquid sample is injected into the combustion tube, mixed with oxygen and burned, the sample of chlorine into hydrogen chloride, and the carrier gas into the titration cell, and electricity
The silver ions in the solution react (Ag Cl - → AgCl ↓), and the consumed silver ions are replenished by the electrodes through electrolysis. According to the required electricity
Amount, according to Faraday's law of electrolysis calculate the chlorine content of the sample.
3.2 Instruments
3.2.1 microcoulomb instrument
3.2.1.1 Microcouloumeter Any microcouplers capable of meeting the minimum detectable concentration ≤0.5 mg/L as required by this standard may be used. Measurement
Volume Reference - Measures the potential difference of the electrode pair and compares this potential difference with the bias voltage to amplify this difference to the electrolysis electrode pair producing current, microcoulomb
The output voltage signal is proportional to the electrolytic current.
3.2.1.2 heating furnace with 1 ~ 3 temperature control section.
3.2.1.3 combustion tube. Quartz made of its structure to meet the sample carrier gas carried to the combustion zone, and under aerobic combustion conditions. Burning tube
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