GB/T 13248-2008 English PDFUS$194.00 · In stock
Delivery: <= 3 days. True-PDF full-copy in English will be manually translated and delivered via email. GB/T 13248-2008: Rubber and rubber latices -- Determination of manganese content -- Sodium periodate photometric methods Status: Valid GB/T 13248: Historical versions
Basic dataStandard ID: GB/T 13248-2008 (GB/T13248-2008)Description (Translated English): Rubber and rubber latices -- Determination of manganese content -- Sodium periodate photometric methods Sector / Industry: National Standard (Recommended) Classification of Chinese Standard: G40 Classification of International Standard: 83.060 Word Count Estimation: 10,120 Date of Issue: 2008-06-04 Date of Implementation: 2008-12-01 Older Standard (superseded by this standard): GB/T 13248-1991 Quoted Standard: GB/T 15340; ISO 123-2001; ISO 124-1997; ISO 4793-1980 Adopted Standard: ISO 7780-1998, IDT Regulation (derived from): National Standard Approval Announcement 2008 No.9 (Total No.122) 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 determination of the two vulcanized rubber sodium spectrophotometry, raw rubber, latex rubber compound and manganese content, the method also includes the analysis of the two measuring chlorine rubber. Chapter 3 of this standard a large impact is not contained in the filler, the filler may be synthetic or natural silicate or calcium carbonate in different forms, the ingredients may also be synthesized under the experimental conditions used to generate the hard dissolved phosphate complexing agent. Chapter 4 of this standard specifies the determination of raw rubber, synthetic natural rubber, isoprene rubber and latex containing a small amount of filler: inert silicate filler or any kind of complexing agents, such as: titanium dioxide under the experimental conditions to form a insoluble phosphate ingredients. GB/T 13248-2008: Rubber and rubber latices -- Determination of manganese content -- Sodium periodate photometric methods---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. Rubber and rubber latices. Determination of manganese content. Sodium periodate photometric methodes ICS 83.060 G40 National Standards of People's Republic of China GB/T 13248-2008/ISO 7780.1998 Replacing GB/T 13248-1991 Rubber and latex manganese content Sodium periodate spectrophotometry (ISO 7780.1998, IDT) Posted 2008-06-04 2008-12-01 implementation Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China Standardization Administration of China released ForewordThis standard is identical with ISO 7780.1998 "Rubber and latex manganese content - Sodium periodate photometric method" (in English). This standard replaces GB/T 13248-1991 "vulcanized rubber Determination of manganese content of sodium periodate photometric method." For ease of use, this standard made the following editorial changes. a) "this International Standard" be replaced by "this standard"; b) Delete the ISO foreword; c) use a decimal point instead of a decimal comma ",". ","; d) The text of the "Warning" refer to the first body. This standard compared with GB/T 13248-1991 main changes are as follows. --- Increasing the scope of application (Excerpts Chapter 1, Section 11991 edition); --- Increased four references (edition Chapter 2); --- Revised statement of principle of the method (Chapter 3 edition, 1991 Version 2.1; Excerpts 4.1,1991 Version 3.1); --- Increasing the preparation of stable aqueous test (this version 3.2.5; this version 4.2.6); --- Increase the preparation of standard solution of manganese (this version 3.2.7a); --- Increasing the sample preparation (edition 3.4; this version 4.4); --- Increasing the sample preparation and test solution preparation (Excerpts 3.5.1,3.5.2; edition 4.5); --- The sample weight of 2g to the original edition of gum 10g, latex 10g, compounds and vulcanizates of 10g (Excerpts 3.5.1.1,3.5.1.2 and 3.5.1.3,1991 Version 2.4.2; Excerpts 4.5,1991 Version 2.4.2); --- Increase in the content of the test report (edition 3.7; 4.7 edition). The standard proposed by China Petroleum and Chemical Industry Association. This standard by the National Standards Commission rubber rubber physical and chemical test methods Technical Committee (SAC/TC35/SC2) centralized. This standard is drafted by. Beijing Rubber Industry Research and Design Institute. The main drafters of this Standard. Cang Feifei. This standard replaces the standards previously issued as follows. --- GB/T 13248-1991. GB/T 13248-2008/ISO 7780.1998 Rubber and latex manganese content Sodium periodate spectrophotometry Warning --- personnel should use this standard practice regular laboratory work, this standard does not point out all possible security asked Questions, the user has the responsibility to use appropriate safety and health practices and to ensure compliance with the conditions relevant state laws and regulations.1 ScopeThis standard specifies the spectrophotometric determination of two use sodium periodate vulcanized rubber, raw rubber, latex compounds and manganese content, the two methods also Determination includes chlorine rubber. The standard Chapter 3 provides a lot of influence from the filler contained, these fillers may be synthetic or natural silicate or different In the form of calcium carbonate, or synthetic ingredients, and under the experimental conditions used to generate the phosphate insoluble complexing agent. Chapter 4 of this standard specifies the determination of raw rubber, synthetic natural rubber, isoprene rubber and latex containing a small amount of filler (no more than 10%). Inert The silicate filler or any of a complexing agent, such as. titanium dioxide, under the experimental conditions of forming an insoluble phosphate with the agent.2 Normative referencesThe 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. GB/T 15340 natural, synthetic rubber raw sampling and sample preparation method (GB/T 15340-1994, idt ISO 1795.1992) ISO 123.2001 Rubber latex samples 124 ISO .1997 Determination of total solids content of the rubber latex of ISO 4793. 1980 Laboratory sintered (sintered frit) filter porosity classification categories and grades General Method 3 3.1 Principle In the case of the presence of chlorine, sulfuric acid digestion backup, followed by reaction with nitric acid. This process takes place in the Kjeldahl flask; if silicate Exist, the sample was digested with sulfuric acid and hydrofluoric acid, the silicon will evaporate to form silicon tetrafluoride off. The case where chlorine does not exist, the rubber in a platinum crucible Ashed with fluorine sodium borate treatment. Behind the process, add boiling sodium periodate, manganese is oxidized to permanganate, manganese content by The absorbance was measured at 525nm. 3.2 Reagents During the analysis, as far as possible using analytical grade reagents suitable for the analysis of trace metals, and only with a stable water (see 3.2.5). 3.2.1 sodium fluoroborate Sodium fluoroborate if not analytically pure, may be prepared in the following test procedure. It was dissolved in 100mL hot water about 35 ℃ in 110g Industrial sodium fluoroborate, filtered through filter paper, the solution was cooled to room temperature with stirring was added 96% 100mL (volume fraction) in ethanol, with Buchner funnel with filter paper, the crystalline precipitate was filtered off on filter paper, the precipitate was transferred to a glass or porcelain dish, and dried under vacuum at 50 deg.] C. 3.2.2 sodium periodate 3.2.3 sulfuric acid, ρ = 1.84Mg/m 3 (GB/T 625). 3.2.4 nitrate, ρ = 1.42Mg/m 3 (GB/T 626). 3.2.5 stable water About 1000mL of water, add a few drops of sulfuric acid and potassium permanganate solution of about 0.1g, the distillation apparatus by distilling the liquid, discard GB/T 13248-2008/ISO 7780.1998 ......Tips & Frequently Asked Questions:Question 1: How long will the true-PDF of GB/T 13248-2008_English be delivered?Answer: Upon your order, we will start to translate GB/T 13248-2008_English as soon as possible, and keep you informed of the progress. 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