GB/T 3653.4-2025 English PDFGB/T 3653.4: Historical versions
Basic dataStandard ID: GB/T 3653.4-2025 (GB/T3653.4-2025)Description (Translated English): Ferroboron - Determination of aluminum content - EDTA titrimetric method, chrome azurol S spectrophotometric method and inductively coupled plasma atomic emission spectrometric method Sector / Industry: National Standard (Recommended) Date of Implementation: 2026-03-01 Older Standard (superseded by this standard): GB/T 3653.4-2008 GB/T 3653.4-2008: Ferroboron -- Determination of aluminium content -- EDTA titrimetric method---This is a DRAFT version for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.Ferroboron. Determination of aluminium content. EDTA titrimetric method ICS 77.100 H11 National Standards of People's Republic of China Replacing GB/T 3653.4-1988 Determination of boron content of Fe-Al EDTA titration Posted 2008-05-13 2008-11-01 implementation Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China Standardization Administration of China released ForewordThis Part replaces GB/T 3653.4-1988 "the determination of aluminum boron iron chemical analysis method EDTA titration." This portion of the GB/T 3653.4-1988 comparison, the main differences are as follows. --- Increased standard warning language; --- Added "Normative references" and "Test Report" section. This part is proposed by the China Iron and Steel Association. This section is under the jurisdiction of Metallurgical Industry Information Standards Institute. This section is drafted. Sinosteel Jilin Ferroalloy Co., Ltd. The main drafters of this section. Wu Liyu, Sun Yan, high Yumin, Yuan Ping, Yuan winter snows. This part of the standard replaces the previous editions are. --- GB/T 3653.4-1988. Determination of boron content of Fe-Al EDTA titration Warning. Use of this section shall be a person experiences regular laboratory work. This section does not point out all possible security asked Questions, the user has the responsibility to take appropriate safety and health practices and to ensure compliance with the conditions relevant national regulations.1 ScopeThis section provides ferroboron aluminum content EDTA titration. This section applies to the determination of boron iron aluminum content measurement range (mass fraction). 1.00% - 8.00%.2 Normative referencesThe following documents contain provisions which, through reference in this text, constitute provisions of this part. For dated references, subsequent Amendments (not including errata content) or revisions do not apply to this section, however, encourage the parties to this part of the research agreement Whether the latest versions of these documents. For undated reference documents, the latest versions apply to this section. GB/T 4010 alloy chemical analysis and preparation of samples Principle 3 Sample with nitric acid, hydrofluoric acid dissolved, the residue was filtered, and the filtrate hydrochloric acid medium, with methyl isobutyl ketone iron ions are removed. The residue was Sodium pyrosulfate melt, after leaching combined with the main solution, sodium hydroxide, and then aluminum and manganese and residual iron and other impurities separated, an excess of EDTA, Under the conditions of pH5.5, PAN as indicator, titrated with standard solution of copper sulfate after excess EDTA, sodium fluoride and aluminum release Complexed EDTA, and then drop back sulfate standard solution, the standard solution according to the consumption, calculate the percentage of the aluminum content.4 Reagents and materialsUnless otherwise indicated in the analysis using only recognized as analytical grade reagents and distilled water or its equivalent purity water. 4.1 sodium pyrophosphate solid. 4.2 Sodium hydroxide, solid. 4.3 nitric acid, ρ1.42g/mL. 4.4 perchloric acid, ρ1.67g/mL. 4.5 hydrofluoric acid, ρ1.15g/mL. 4.6 hydrochloride, ρ1.19g/mL. 4.7 methyl isobutyl ketone. 4.8 Hydrogen peroxide, ρ1.10g/mL. HCl 4.9, 1 + 1. 4.10 hydrochloric acid, 7 + 5. 4.11 hydrochloric acid, 5 + 95. 4.12 sodium fluoride solution, 50g/L. 4.13 sodium hydroxide solution, 100g/L. 4.14 sodium hydroxide solution, 5g/L. 4.15 acetic acid - sodium acetate buffer solution (pH5.5). Weigh 200g of sodium acetate (CH3COONa · 3H2O) were dissolved in 500mL of water, 9mL added glacial acetic acid (ρ1.05g/mL), diluted with water to 1000mL, and mix. ......Tips & Frequently Asked Questions:Question 1: How long will the true-PDF of GB/T 3653.4-2025_English be delivered?Answer: Upon your order, we will start to translate GB/T 3653.4-2025_English as soon as possible, and keep you informed of the progress. The lead time is typically 1 ~ 3 working days. The lengthier the document the longer the lead time.Question 2: Can I share the purchased PDF of GB/T 3653.4-2025_English with my colleagues?Answer: Yes. 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Unless special scenarios such as technical constraints or academic study, you should always prioritize to purchase the latest version GB/T 3653.4-2025 even if the enforcement date is in future. Complying with the latest version means that, by default, it also complies with all the earlier versions, technically. |
