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GB/T 1271-2011: Chemical reagent -- Potassium fluoride dihydrate
Status: Valid GB/T 1271: Evolution and historical versions
| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| GB/T 1271-2011 | English | 209 |
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Chemical reagent -- Potassium fluoride dihydrate
| Valid |
GB/T 1271-2011
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| GB/T 1271-1994 | English | 279 |
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Chemical reagent. Potassium fluoride dihydrate
| Obsolete |
GB/T 1271-1994
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| GB 1271-1977 | English | 199 |
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Chemical reagents--Potassium fluoride
| Obsolete |
GB 1271-1977
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PDF similar to GB/T 1271-2011
Basic data | Standard ID | GB/T 1271-2011 (GB/T1271-2011) | | Description (Translated English) | Chemical reagent -- Potassium fluoride dihydrate | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | G62 | | Classification of International Standard | 71.040.30 | | Word Count Estimation | 9,979 | | Date of Issue | 2011-05-12 | | Date of Implementation | 2011-12-01 | | Older Standard (superseded by this standard) | GB/T 1271-1994 | | Quoted Standard | GB/T 601; GB/T 602; GB/T 603; GB/T 6682; GB/T 9728; GB/T 9735; GB/T 9739; GB/T 9742; GB 15258; GB 15346; HG/T 3484; HG/T 3921 | | Regulation (derived from) | Announcement of Newly Approved National Standards No. 6 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 chemical reagent potassium fluoride dihydrate traits, specifications, testing, inspection and marking and packaging rules. This standard applies to chemical reagent potassium fluoride dihydrate inspection. | GB/T 1271-2011: Chemical reagent -- Potassium fluoride dihydrate---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 reagent. Potassium fluoride dihydrate
ICS 71.040.30
G62
National Standards of People's Republic of China
Replacing GB/T 1271-1994
Chemical Reagents
Potassium fluoride dihydrate (potassium fluoride)
Chemicalreagent-
Issued on. 2011-05-12
2011-12-01 implementation
Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China
Standardization Administration of China released
Foreword
This standard replaces GB/T 1271-1994 "Chemicals dihydrate potassium fluoride (KF)," compared with the GB/T 1271-1994 Main
To change the following.
--- Clarity test specifications by a "qualified" to "3", "5" (1994 version 3.2, this version of Chapter 4);
--- Increasing the calculation formula of the free acid, free base (4.2.2,4.2.3 1994 edition, this version of 5.4, 5.5);
--- Determination of heavy metals increased sodium sulfide - Glycerin colorimetry and adjusted chemically pure sample size (1994 version 4.2.8, this
Version 5.10);
--- Modify the packaging and logo (1992 edition, Chapter 6, Section 7 of this edition).
Appendix A of this standard is a normative appendix.
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 was drafted. Elsevier Reagent Co., Ltd. and Shanghai.
The main drafters of this standard. Xie Ji, Ke Dehong.
This standard replaces the standards previously issued as follows.
--- GB/T 1271-1959, GB/T 1271-1977, GB/T 1271-1994.
Chemical Reagents
Potassium fluoride dihydrate (potassium fluoride)
Warning. some of the test procedure specified in this standard may lead to dangerous situations, the user has the responsibility to take appropriate safety and health
Measures.
Formula. KF · 2H2O
Molecular Weight. 94.13 (according to 2007 international relative atomic mass)
1 Scope
This standard specifies the chemical reagents potassium fluoride dihydrate characteristics, specifications, testing, packaging and inspection rules and signs.
This standard applies to chemical reagents potassium fluoride dihydrate test.
2 Normative references
The following documents contain provisions which, through reference in this standard and become the standard terms. For dated references, subsequent
Amendments (not including errata content) or revisions do not apply to this standard, however, encourage the parties to the agreement are based on research
Whether the latest versions of these documents. For undated reference documents, the latest versions apply to this standard.
Preparation of GB/T 601 chemical reagent standard titration solution
GB/T 602 Determination of impurities in chemical reagents prepared standard solution (GB/T 602-2002, ISO 6353-1. 1982, NEQ) with
GB/T 603 chemical reagent test method Preparations of articles (GB/T 603-2002, ISO 6353-1 with. 1982,
NEQ)
GB/T 6682 analytical laboratory use specifications and test methods (GB/T 6682-2008, ISO 3696. 1987, MOD)
GB/T 9728 General method for determination of chemical reagents sulfate (GB/T 9728-2007, ISO 6353-1. 1982, NEQ)
GB/T 9735 General method for determination of heavy metals Chemicals (GB/T 9735-2008, ISO 6353-1. 1982, NEQ)
GB/T 9739 General method for determination of iron chemical reagents (GB/T 9739-2006, ISO 6353-1. 1982, NEQ)
GB/T 9742 General method for determination of chemical reagents silicate (GB/T 9742-2008, ISO 6353-1. 1982, NEQ)
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 a colorless crystalline, toxic, deliquescent, easily soluble in water but insoluble in alcohol, the aqueous corrosion of glass.
4 Specification
Potassium fluoride dihydrate as shown in Table 1.
Table 1
Name AR chemically pure
Content (KF · 2H2O), w /% ≥99.0 ≥98.0
Clarity test/number ≤3 ≤5
Free acid (HF dollars), w /% ≤0.05 ≤0.1
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