GB/T 5687.4-2016 English PDFUS$159.00 · In stock
Delivery: <= 3 days. True-PDF full-copy in English will be manually translated and delivered via email. GB/T 5687.4-2016: Nitrogen-bearing ferrochromium and nitride ferrochrome with high nitrogen content -- Determination of nitrogen content -- The distillation-neutralization titration method Status: Valid GB/T 5687.4: Historical versions
Basic dataStandard ID: GB/T 5687.4-2016 (GB/T5687.4-2016)Description (Translated English): Nitrogen-bearing ferrochromium and nitride ferrochrome with high nitrogen content -- Determination of nitrogen content -- The distillation-neutralization titration method Sector / Industry: National Standard (Recommended) Classification of Chinese Standard: H11 Classification of International Standard: 77.100 Word Count Estimation: 8,848 Date of Issue: 2016-06-14 Date of Implementation: 2017-05-01 Older Standard (superseded by this standard): GB/T 5687.4-1985 Regulation (derived from): National Standard Announcement No. 8 of 2016 Issuing agency(ies): General Administration of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 GB/T 5687.4-2016: Nitrogen-bearing ferrochromium and nitride ferrochrome with high nitrogen content -- Determination of nitrogen content -- The distillation-neutralization titration 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. Lt;/RTI & ICS 77.100 H11 National Standards of People's Republic of China Replacing GB/T 5687.4-1985 Determination of ferric chromium nitride and high nitrogen ferrochrome nitrogen content Distillation - neutralization titration nitrogencontent-Determination ofnitrogencontent- 2016-06-14 release 2017-05-01 implementation General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China China National Standardization Management Committee released ForewordGB/T 5687 is divided into the following sections. Ferrochromium, silicon - chromium alloy and ferrocyanide - Determination of silicon content - Perchloric acid dehydration gravimetric method GB/T 5687.2. Ferrochrome and high - nitrogen ferrochrome - Determination of nitrogen content - Distillation - neutralization titration method GB/T 5687.4. Determination of ferromanganese and manganese content - Flame atomic absorption spectrometric method GB/T 5687.10. This part is part 4 of GB/T 5687. This part is drafted in accordance with the rules given in GB/T 1.1-2009. This part replaces GB/T 5687.4-1985 "Chromium iron chemical analysis method Neutralization titration method for determination of nitrogen content". This part is related to GB/T 5687.4- 1985, in addition to editorial changes, the main technical changes are as follows. The scope of application of the method increases the determination of nitrogen content in high nitrogen ferrochrome; --- Determination of the range from ≤ 1.00% to 10.00% adjusted to ferrochrome iron. 2.00% ~ 7.00%, high nitrogen ferrochrome. > 7.00% ~ 12.00%; --- adjust the preparation method of standard titration solution of sulfamic acid; --- increase the calibration of sodium azide sulfonate standard titration solution; --- sample size from the "sample should be through the 0.088mm mesh" adjusted to "easy to break the sample should be all through the 0.088mm sieve, Do not break the sample (drilling) should be all through the 1.60mm sieve, and take 0.154mm sieve on the sample "; --- sample said sample volume adjusted to "nitrogen content between 2.00% ~ 4.00%, weighed 0.50g, accurate to 0.0001g; nitrogen content in the 4.00% to 12.00%, weighed 0.20g, accurate to 0.0001g; --- modified the decomposition of difficult to dissolve the sample method; A waste bottle is added to the distillation unit; --- adjust the amount of sodium hydroxide solution, soluble sample distillation by adding 50mL sodium hydroxide solution, insoluble sample distillation Add 80 mL of sodium hydroxide solution. This part is made by China Iron and Steel Industry Association. This section is under the jurisdiction of the National Technical Committee on Standardization of Pig Iron and Ferroalloys (SAC/TC318). This part of the drafting unit. Jilin Iron Alloy Co., Ltd. This part of the main drafters. Zhang Yu Shuai, Liu Bing, Zheng Haidong, Wu Liyu. This part of the previous version of the standard to replace the release of the situation. --- GB/T 5687.4-1985. Determination of ferric chromium nitride and high nitrogen ferrochrome nitrogen content Distillation - neutralization titration WARNING - Personnel using this section should have practical experience in formal laboratory work. This section does not indicate all possible security questions question. It is the responsibility of the user to take appropriate safety and health measures and to ensure compliance with the conditions set forth in the relevant national regulations.1 ScopeThis part of GB/T 5687 specifies the nitrogen content of ferricyanide and high nitrogen ferrochrome by distillation-neutralization titration. This part is applicable to the determination of nitrogen content in ferric chloride and high nitrogen ferrochrome. Chromium ferric nitride measurement range (mass fraction). 2.00% ~ 7.00%; high nitrogen ferrochrome determination range (mass fraction). > 7.00% ~ 12.00%.2 normative reference documentsThe following documents are indispensable for the application of this document. For dated references, only the dated edition applies to this article Pieces. For undated references, the latest edition (including all modifications) applies to this document. GB/T 4010 Ferroalloy chemical analysis of the sample to take and preparation GB/T 6682 Analytical laboratory water specifications and test methods3 principleThe soluble sample is decomposed with hydrochloric acid, and the insoluble sample is decomposed with hydrochloric acid, sulfuric acid and phosphoric acid, wherein the nitrogen is converted into an ammonia salt, and under the action of an excess of alkali, Steam distillation separation of ammonia, boric acid solution to absorb distillate, methyl red - methyl methyl blue as an indicator, with sodium sulfamate standard titration solution Titration.4 reagentIn the analysis, unless otherwise stated, only the confirmed analytical reagent and three or more distilled water in accordance with GB/T 6682 specifications Purity of pure water. 4.1 Hydrochloric acid, ρ = 1.19 g/mL. 4.2 phosphoric acid, ρ = 1.70 g/mL. 4.3 sulfuric acid, ρ = 1.84g/mL. 4.4 Hydrochloric acid, 1 1. 4.5 potassium permanganate solution, 25g/L. 4.6 boric acid solution, 25 g/L. 4.7 sodium hydroxide solution, 500g/L. 4.8 Aminosulfonic acid standard titration solution, about 0.10 mol/L. a) preparation Weigh 19.4 g of sulfamic acid, placed in 500mL beaker, dissolved in water, into the.2000mL volumetric flask, diluted with water to the mark, Mix well. ......Tips & Frequently Asked Questions:Question 1: How long will the true-PDF of GB/T 5687.4-2016_English be delivered?Answer: Upon your order, we will start to translate GB/T 5687.4-2016_English as soon as possible, and keep you informed of the progress. 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