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GB/T 1291-2008: Chemical reagent -- Potassium hydrogen phthalate
Status: Valid GB/T 1291: Evolution and historical versions
| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| GB/T 1291-2008 | English | 139 |
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Chemical reagent -- Potassium hydrogen phthalate
| Valid |
GB/T 1291-2008
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| GB/T 1291-1988 | English | 199 |
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Chemical reagent--Potassium hydrogen phthalate
| Obsolete |
GB/T 1291-1988
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PDF similar to GB/T 1291-2008
Basic data | Standard ID | GB/T 1291-2008 (GB/T1291-2008) | | Description (Translated English) | Chemical reagent -- Potassium hydrogen phthalate | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | G63 | | Classification of International Standard | 71.040.30 | | Word Count Estimation | 6,663 | | Date of Issue | 2008-05-15 | | Date of Implementation | 2008-11-01 | | Older Standard (superseded by this standard) | GB/T 1291-1988 | | Quoted Standard | GB/T 601; GB/T 602; GB/T 603; GB/T 6682; GB/T 9723-2007; GB/T 9724; GB/T 9728; GB/T 9729; GB/T 9739; GB 15346; HG/T 3484; HG/T 3921 | | Adopted Standard | ISO 6353-3-1987, NEQ | | Regulation (derived from) | National Standard Approval Announcement 2008 No.8 (Total No.121) | | 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 reagents potassium hydrogen phthalate traits, specifications, trial, packaging and inspection rules and signs. This standard applies to test potassium hydrogen phthalate chemical reagents. | GB/T 1291-2008: Chemical reagent -- Potassium hydrogen phthalate---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 hydrogen phthalate
ICS 71.040.30
G63
National Standards of People's Republic of China
Replacing GB/T 1291-1988
Chemicals potassium hydrogen phthalate
(ISO 6353-3. 1987, Reagentsforchemicalanalysis-
Part 3. Specifications-Secondseries, NEQ)
Posted 2008-05-15
2008-11-01 implementation
Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China
Standardization Administration of China released
Foreword
This standard and ISO 6353-3. 1987 "Chemical analysis of reagent --- Part 3. Specifications --- 2nd Series" in R82 "phthalate
Potassium, "the degree of consistency is not equivalent.
This standard replaces GB/T 1291-1988 "chemical reagents potassium hydrogen phthalate," compared with the GB/T 1291-1988 major changes
as follows.
--- The Clarity test specification by "qualified" to "No. 4" (1988 version 3.3, Chapter 4 of this edition);
--- Canceled salt (1988 edition 3.3.1,4.3.6);
--- Adjust the determination of standard titration solution concentration and sample volume (1988 version 4.1, this version 5.3);
--- The pH value, a chloride, sulfur compounds, iron four general method for determining use of chemical reagents (1988 edition 4.2,4.3.4,
4.3.5,4.3.8, this edition 5.4,5.8,5.9,5.11);
--- Adjust the packaging and logo (the 1988 edition, Chapter 6, Section 7 of this edition).
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. Elsevier Reagent Co., Ltd. and Shanghai.
The main drafters of this standard. Chen Jingjuan, Ke Dehong, Xie Ji.
This standard was first released in 1977, in 1988, the first revision.
Chemicals potassium hydrogen phthalate
Molecular formula. C8H5KO4
Molecular weight. 204.22 (according to 2005 international relative atomic mass)
1 Scope
This standard specifies the chemical reagents potassium hydrogen phthalate traits, specifications, testing, packaging and inspection rules and signs.
This standard applies to potassium hydrogen phthalate test chemical reagent.
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 9723-2007 Chemicals flame atomic absorption spectrometry General
GB/T 9724 General rule for determination of pH chemical reagent (GB/T 9724-2007, ISO 6353-1. 1982, NEQ)
GB/T 9728 General method for determination of chemical reagents sulfate (GB/T 9728-2007, ISO 6353-1. 1982, NEQ)
GB/T 9729 General method for determination of chloride Chemicals (GB/T 9729-2007, 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 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 or white crystalline powder, soluble in water.
4 Specification
Potassium hydrogen phthalate as shown in Table 1.
Table 1
Name AR
Content (C8H5KO4), /% ≥99.8
pH value (50g/L, 25 ℃) 3.8 ~ 4.2
Clarity test/number ≤4
Water-insoluble, /% ≤0.005
Loss on drying, /% ≤0.05
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