GB/T 21755-2008 English PDFUS$359.00 · In stock
Delivery: <= 3 days. True-PDF full-copy in English will be manually translated and delivered via email. GB/T 21755-2008: Chemical products for industrial use -- Determination of oxidizing properties of solids Status: Obsolete
Basic dataStandard ID: GB/T 21755-2008 (GB/T21755-2008)Description (Translated English): Chemical products for industrial use -- Determination of oxidizing properties of solids Sector / Industry: National Standard (Recommended) Classification of Chinese Standard: A80 Classification of International Standard: 13.300 Word Count Estimation: 9,934 Date of Issue: 2008-05-12 Date of Implementation: 2008-09-01 Adopted Standard: NF T20-035-1985, IDT Regulation (derived from): Announcement of Newly Approved National Standards No. 7, 2008 (No. 120 overall) 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 oxidizing properties of solid chemical products An assay. This standard does not apply to liquid products, gases, explosive or flammable products, organic peroxides, and in this way under the experimental conditions melted solid product. GB/T 21755-2008: Chemical products for industrial use -- Determination of oxidizing properties of solids---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 products for industrial use. Determination of oxidizing properties of solids ICS 13.300 A80 National Standards of People's Republic of China Chemical products for industrial use Determination of oxidizing properties of solids Posted 2008-05-12 2008-09-01 implementation Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China Standardization Administration of China released Foreword"Determination of chemical products for industrial use oxidizing properties of solids" This standard is identical with French national standards NFT20-035 (September 1985) (French version). For ease of use, the present standard of editorial changes. --- Increasing the "Introduction" section, the French national standards NFT20-035 "industrial use chemical oxidizing properties of solids Determination "in the" 0introduction "section included in the" Introduction "section; --- French national standards NFT20-035 "Determination of chemical oxidizing properties of solids industrial uses" in the "9BIBLI- OGRAPHIE "as part of the standard" References "section. Appendix A of this standard is a normative appendix. This standard is managed by the National Standardization Technical Committee chemicals dangerous (SAC/TC251) and focal points. This standard is drafted by. SZCIQ. Participated in the drafting of this standard. Shanghai CIQ. The main drafters of this standard. Liu Li, Zouchun Hai, Wu Jingwu, Yushu Yuan, Li Xin Tian, \u200b\u200bLiu Zhihong, Ren Cong Liang Feng, Jiang Wei, Chen Xiang. This standard is the first release.IntroductionBefore the implementation of this standard assay, it is recommended to first have information about the product being tested and potentially explosive nature of combustion. The chemical structure of reviewing the product display, this product can not be the case of an exothermic reaction occurs with the fuel, the method is not applicable. In order to ensure that this assay does not require special safety precautions should be a first test experiment. Chemical products for industrial use Determination of oxidizing properties of solids1 ScopeThis standard specifies a method for determination of oxidizing properties of solid chemical products. This standard does not apply to liquid products, gases, explosive or flammable products, organic peroxides, and under the experimental conditions of the method of melting The solid product (e.g., surfactants, etc.).2 Terms and definitionsThe following terms and definitions apply to this standard. 2.1 Reaction time, in seconds, under normal conditions, the reaction zone spread through a heap of work to determine the time. 2.2 Within a certain period of time, the length of the reaction zone by spreading the work stack divided by this time, expressed in millimeters per second. 2.3 Several assay mixture containing at 10% to 90% of accelerant (by weight), the measured maximum burning rate. Principle 3 For security reasons, we should conduct a preliminary test experiment. The dried product under test with a fuel mix is \u200b\u200bintroduced into the source of the fire Observe the reaction mixture and, if intense reaction, the product can be considered as an oxidant. If the intense reaction does not occur, continue measurement. The test sample crushed dried into a known mold with a predetermined fuel Mixed in different proportions, after the mold is made of several groups working heap. Ignite the pile at one end work, determination of maximum burning speed, and then compare it with the reference mixture maximum burning rate.4 ReagentsUse only analytical reagent. 4.1 barium nitrate. Cellulose powder 4.2, thin layer chromatography using type, and satisfies the following features. --- 85% of the fiber length between 75 m to 20μm; --- Sieved using a 125μm sieve; --- At a temperature of 103 ℃ ± 2 ℃ dried to constant weight. 4.3 soft wood chips (only the first test experiment), the following features. --- Sieved using a sieve of 1.6mm; --- Expand smaller than the layer thickness of 25mm, 2 ℃ 4h ± dried at a temperature of 103 ℃; --- Cooled and stored in a sealed container as far as possible within its filled. This wood should be used in dry 24h. ......Tips & Frequently Asked Questions:Question 1: How long will the true-PDF of GB/T 21755-2008_English be delivered?Answer: Upon your order, we will start to translate GB/T 21755-2008_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 21755-2008_English with my colleagues?Answer: Yes. The purchased PDF of GB/T 21755-2008_English will be deemed to be sold to your employer/organization who actually pays for it, including your colleagues and your employer's intranet.Question 3: Does the price include tax/VAT?Answer: Yes. 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