GB/T 654-2011 English PDF

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GB/T 654-2011: Chemical reagents barium carbonate
Status: Valid

GB/T 654: Historical versions

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 654-2011	229	Add to Cart	3 days	Chemical reagents barium carbonate	Valid
GB/T 654-1999	319	Add to Cart	3 days	Chemical reagent-- Barium carbonate	Obsolete
GB/T 654-1977	RFQ	ASK	3 days	Chemical reagents--Barium carbonate	Obsolete

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Basic data

Standard ID: GB/T 654-2011 (GB/T654-2011)
Description (Translated English): Chemical reagents barium carbonate
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: G62
Classification of International Standard: 71.040.30
Word Count Estimation: 10,187
Date of Issue: 2011-12-30
Date of Implementation: 2012-06-01
Older Standard (superseded by this standard): GB/T 654-1999
Quoted Standard: GB/T 601; GB/T 602; GB/T 603; GB/T 609; GB/T 6682; GB/T 9723-2007; GB/T 9729; GB/T 9735-2008; GB/T 9736-2008; GB/T 9739; GB 15258; GB 15346; HG/T 3484; HG/T 3921
Regulation (derived from): Announcement of Newly Approved National Standards No. 23 of 2011
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 characteristics of barium carbonate in chemical reagents, specifications, testing, inspection and marking and packaging rules. This standard applies to chemical test Jing in barium examination.

GB/T 654-2011: Chemical reagents barium carbonate

---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.
Chemical reagents barium carbonate ICS 71.040.30 G62 National Standards of People's Republic of China Replacing GB/T 654-1999 Chemicals barium carbonate Issued on. 2011-12-30 2012-06-01 implementation Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China Standardization Administration of China released

Foreword

This standard was drafted in accordance with GB/T 1.1-2009 given rules. This standard replaces GB /"Chemicals barium carbonate", compared with the GB/T 654-1999 T 654-1999 main changes are as follows. --- Clarity test specifications by a "qualified" to "No. 4", "6" (see Chapter 4, Chapter 4 of the 1999 edition); --- Increasing the sodium, potassium and determination of two specifications (see Chapter 4, 5.9,5.10); --- Alkalinity by the unit "mmol/100g" adjusted "mmol/g" (see Chapter 4, Chapter 4 of the 1999 edition); --- Not canceled sulfate precipitate (1999 edition, Chapter 4, 5.12). The standard proposed by China Petroleum and Chemical Industry Association. This standard by the National Standardization Technical Committee Chemistry Chemicals Branch (SAC/TC63/SC3) centralized. This standard is drafted by. Beijing Yili Fine Chemicals Co., Ltd. The main drafters of this standard. Zhao Yufeng, the Secretary Yurong. This standard replaces the standards previously issued as follows. --- GB/T 654-1965, GB/T 654-1977, GB/T 654-1999. Chemicals barium carbonate Warning. some of the test procedure specified in this standard can lead to dangerous situations, the user has the responsibility to take appropriate safety and health practices. Molecular formula. BaCO3 Molecular weight. 197.34 (according to 2007 international relative atomic mass)

1 Scope

This standard specifies the chemical reagent barium carbonate traits, specifications, testing, packaging and inspection rules and signs. This standard applies to chemical agents in barium test.

2 Normative references

The following documents for the application of this document is essential. For dated references, only the dated version suitable for use herein Member. For undated references, the latest edition (including any amendments) applies to this document. Preparation of GB/T 601 chemical reagent standard titration solution Preparation of standard solution of GB/T 602 Determination of impurities in chemical reagents GB/T 603 chemical reagent in test methods - Preparations with GB/T 609 chemical reagent - General method for determination of total nitrogen Laboratory use specifications and test methods GB/T 6682 Analysis GB/T 9723-2007 Chemicals flame atomic absorption spectrometry General GB/T 9729 General method for determination of chloride Chemicals GB/T 9735-2008 General method for determination of heavy metals Chemicals GB/T 9736-2008 Determination of alkalinity and acidity Chemicals general method GB/T 9739 General method for determination of iron chemical reagents GB 15258 rules for preparation of chemical safety labels GB 15346 chemical reagent packaging and marking HG/T 3484 standard chemical reagents glass emulsion and clarity standards HG/T 3921 Chemicals sampling and acceptance rules

3 Characters

This reagent is white powder, insoluble in water.

4 Specification

Barium carbonate as shown in Table 1. ......

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