GB/T 9729-2007 PDF English
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GB/T 9729: Historical versions
| Standard ID | USD | BUY PDF | Delivery | Standard Title (Description) | Status |
| GB/T 9729-2007 | 70 | Add to Cart | Auto, 9 seconds. | Chemical reagent -- General method for the determination of chloride | Valid |
| GB/T 9729-1988 | 199 | Add to Cart | 2 days | Chemical reagent--General method for the determination of chloride | Obsolete |
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GB/T 9729-2007: Chemical reagent -- General method for the determination of chloride
---This is an excerpt. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.), auto-downloaded/delivered in 9 seconds, can be purchased online: https://www.ChineseStandard.net/PDF.aspx/GBT9729-2007GB NATIONAL STANDARD OF THE PEOPLE’S REPUBLIC OF CHINA ICS 71.040.30 G 60 Replacing GB/T 9729-1988 Chemical reagent – General method for the determination of chloride (ISO6353-1.1982, Reagents for chemical analysis – Part 1. General test methods, NEQ) Issued on: SEPTEMBER 26, 2007 Implemented on: APRIL 1, 2008 Issued by. General Administration of Quality Supervision, Inspection and Quarantine; Standardization Administration Committee.
Table of Contents
Foreword ... 3 1 Scope ... 4 2 Normative references ... 4 3 Principle... 4 4 Reagent and material ... 5 5 Determination ... 5Foreword
This Standard is not equivalent to ISO 6353-1.1982 Reagents for chemical analysis - Part 1. General test methods. This Standard replaces GB/T 9729-1988 Chemical reagent - General method for the determination of chloride. Compared with GB/T 9729-1988, the main change is as follows. - Refined the determination method (Clause 5 of 1988 edition, Clause 5 of this Standard). This Standard was proposed by China Petroleum and Chemical Industry Federation. This Part shall be under the jurisdiction of the National Standardization Technical Committee of Chemical Reagents (SAC/TC 63 / SC 3). The drafting organization of this Standard. Guangdong Guanghua Chemical Factory Co., Ltd. Main drafters of this Standard. Zhang Zhibin, Lin Chuqing, and Zhang Mingchun. This Standard was issued in 1988 for the first time. Chemical reagent – General method for the determination of chloride1 Scope
This Standard specifies the general method for the determination of chloride via visual turbidimetry. This Standard is applicable to the determination of trace chloride in chemical reagent. Detection range is 0.2 µg/mL ~ 4 µg/mL (in Cl).2 Normative references
The following standards contain the provisions which, through reference in this Standard, constitute the provisions of this Standard. For dated references, the subsequent amendments (excluding corrections) or revisions do not apply to this Standard. However, the parties who enter into agreement based on this Standard are encouraged to investigate whether the latest versions of these documents are applicable. For undated reference documents, the latest versions apply to this Standard. GB/T 602 Chemical Reagent - Preparations of Standard Solutions for Impurity (GB/T 602-2002, ISO 6353-1.1982, NEQ) GB/T 603 Chemical Reagent - Preparations of Reagent Solution for Use in Test (GB/T 603-2002, ISO 6353-1.1982, NEQ) GB/T 6682 Water for analytical laboratory use - Specification and test methods (GB/T 6682-1992, neq ISO 3696.1987)3 Principle
In hydrochloric acid medium, chlorine ions and silver ions form insoluble silver chloride. When chlorine ion content is low, silver chloride is in suspension within a certain time, which makes solution turbid and applicable to visual turbidimetry of chloride. ......Source: Above contents are excerpted from the full-copy PDF -- translated/reviewed by: www.ChineseStandard.net / Wayne Zheng et al.
