GB/T 6276.1-2008 English PDF

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GB/T 6276.1-2008: Determination of ammonium hydrogen carbonate for industrial use -- Part 1: Ammonium hydrogen carbonate content -- Acid-base method
Status: Obsolete

GB/T 6276.1: Historical versions

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 6276.1-2008	199	Add to Cart	2 days	Determination of ammonium hydrogen carbonate for industrial use -- Part 1: Ammonium hydrogen carbonate content -- Acid-base method	Obsolete
GB/T 6276.1-1986	199	Add to Cart	2 days	Ammonium hydrogen carbonate for industrial use--Determination of total alkalinity--Volumetric method	Obsolete

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Basic data

Standard ID: GB/T 6276.1-2008 (GB/T6276.1-2008)
Description (Translated English): Determination of ammonium hydrogen carbonate for industrial use -- Part 1: Ammonium hydrogen carbonate content -- Acid-base method
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: G12
Classification of International Standard: 71.060.50
Word Count Estimation: 5,577
Date of Issue: 2008-06-17
Date of Implementation: 2008-09-01
Older Standard (superseded by this standard): GB/T 6276.1-1986
Regulation (derived from): National Standard Approval Announcement 2008 No.10 (Total No.123)
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
Summary: This standard specifies the use of acid-base titration using ammonium bicarbonate content industry. This section applies to industrial use-Determination of ammonium bicarbonate, ammonium bicarbonate content.

GB/T 6276.1-2008: Determination of ammonium hydrogen carbonate for industrial use -- Part 1: Ammonium hydrogen carbonate content -- Acid-base method

---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.
Determination of ammonium hydrogen carbonate for industrial use Part 1. Ammonium hydrogen carbonate content Acid-base method ICS 71.060.50 G12 National Standards of People's Republic of China Replacing GB/T 6276.1-1986 Determination of ammonium bicarbonate industrial Part 1. ammonium bicarbonate content acid-base titration Posted 2008-06-17 2008-09-01 implementation Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China Standardization Administration of China released

Foreword

GB/T 6276 "industrial use - Determination of ammonium bicarbonate method" is divided into nine sections. --- Part 1. ammonium bicarbonate content of acid-base titration; --- Part 2. potentiometric titration of chloride content; --- Part 3. sulphide content Visible turbidimetric method; --- Part 4. sulphate content Visible turbidimetric method; --- Part 5. ash content by weight method; --- Part 6. iron content  phenanthroline spectrophotometry method; --- Part 7. arsenic content diethyl dithiocarbamate silver spectrophotometry; --- Part 8. arsenic content Gutzeit method; --- Part 9. heavy metal content Visible turbidimetric method. This part of GB/T 16276 Part of. This Part replaces GB/T 6276.1-1986 "Industrial ammonium bicarbonate total alkalinity - Volumetric methods." This portion of the GB/T 6276.1-1986 The main differences are. --- Standard name from "industrial ammonium bicarbonate total alkalinity - Volumetric methods" to "industrial use Determination of ammonium bicarbonate Part 1. acid-base titration bicarbonate content "; --- Reagent solution, standard titration solution preparation and calibration methods such as the implementation of HG/T 2843 standard. This part is proposed by the China Petroleum and Chemical Industry Association. This part of the National Standardization Technical Committee and soil conditioners Fertilizers (SAC/TC105) and focal point responsible for the interpretation. This section drafted by. National Fertilizer Quality Supervision and Inspection Center (Shanghai). The main drafters of this section. Zhou Qingyun, Qu Xin. This section was first issued in 1986. Determination of ammonium bicarbonate industrial Part 1. ammonium bicarbonate content acid-base titration

1 Scope

GB/T 6276 This section specifies the content was determined by acid-base titration for industrial use ammonium bicarbonate. This section applies to industrial use of ammonium bicarbonate content determination.

2 Normative references

The following documents contain provisions which, through reference to GB/T 6276 to the present, constitute provisions of this section. For dated reference documents Member, all subsequent amendments (not including errata content) or revisions do not apply to this section, however, encouraged to reach under this section Parties to research agreement to use the latest versions of these documents. For undated reference documents, the latest versions apply to this section. HG/T 2843 fertilizer products for chemical analysis commonly used standard titration solution, standard solution, reagent solution and indicator solution Principle 3 Test compound was added to an excess of sulfuric acid standard titration solution, in the presence of indicator solution, titration with sodium hydroxide standard solution back titration.

4 Reagents and materials

This standard reagent solution and water, in the specifications and method of preparation is not specified, it shall comply with the provisions of HG/T 2843's. 4.1 sulfuric acid standard titration solution, Ba (12H2SO4 ) = 0.5mol/L; 4.2 standard titration solution of sodium hydroxide, Ba (NaOH) = 0.5mol/L; 4.3 methyl red - methylene blue mixed indicator solution.

5 Instruments

Typically laboratory instruments. Step 6 Analysis 6.1 Determination Do two parallel determination of sample. Rapid Weigh about 1g sample (accurate to 0.0002g) with a ground stopper in the weighing bottle, immediately wash the sulfuric acid previously filled with 50.0mL Standard titration solution 250mL conical flask, shake flasks, so that the sample was completely dissolved, bring to the boil expel carbon dioxide was added after cooling 3 to 4 drops of methyl red - methylene blue mixed indicator solution, titration with sodium hydroxide standard titration solution to the test solution exhibits gray-green as the end point.

7 expression analysis

Ammonium bicarbonate content in ammonium bicarbonate (NH4HCO3) mass fraction, expressed in%, according to equation (1). (Vp 1 Vp 2 Ba Ba 1- 2) × 79.06 M1 × 1000 × 100 (1) Where. Value Vp 1 --- adding sulfuric acid standard titration solution volume in milliliters (mL); ......

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