GB/T 22229-2008 English PDFUS$154.00 · In stock
Delivery: <= 3 days. True-PDF full-copy in English will be manually translated and delivered via email. GB/T 22229-2008: Chemical products for industrial use -- Determination of vapour pressure of solids and liquids at range 10-3 to 1Pa -- Vapour pressure balance method Status: Valid
Basic dataStandard ID: GB/T 22229-2008 (GB/T22229-2008)Description (Translated English): Chemical products for industrial use -- Determination of vapour pressure of solids and liquids at range 10-3 to 1Pa -- Vapour pressure balance method Sector / Industry: National Standard (Recommended) Classification of Chinese Standard: A80 Classification of International Standard: 13.300 Word Count Estimation: 8,833 Date of Issue: 2008-06-19 Date of Implementation: 2009-02-01 Adopted Standard: NF T20-047-1985, IDT Regulation (derived from): Announcement of Newly Approved National Standards No. 10 of 2008 (total 123) 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 neutral shade and intensity of dye staining method. This standard applies to the neutral dye shade and strength. GB/T 22229-2008: Chemical products for industrial use -- Determination of vapour pressure of solids and liquids at range 10-3 to 1Pa -- Vapour pressure balance 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. Chemical products for industrial use. Determinaton of vapour pressure of solids and liquids at range 10-3 to 1Pa. Vapour pressure balance method ICS 13.300 A80 National Standards of People's Republic of China Industrial chemicals Vapor pressure of solids and liquids in 10-3P Rao Rao to 1P Determination of vapor pressure balance within the scope of the law Posted 2008-06-19 2009-02-01 implementation Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China Standardization Administration of China released ForewordThis standard is equivalent to using NFT20-047. 1985 "industrial chemicals vapor pressure of solids and liquids in the range of 10-3 to 1Pa Determination of vapor pressure balance method "(French version). For ease of use, has been modified following editorial. a) delete the original standard links and keywords; b) the original standard "analysis" included in the scope of this standard; c) use punctuation "," instead of the original standard by "*" notation; d) the original standard 0 chapter, "Introduction" to the introduction of this standard. This standard is managed by the National Standardization Technical Committee chemicals dangerous (SAC/TC251) and focal points. Participated in the drafting of this standard. the Chemical Institute of Standardization, Jiangxi Entry-Exit Inspection and Quarantine of Jiangsu, Tianjin CIQ. Drafters of this standard. Li JAC, in Yanjun, accounting Chunrui, Mei Jian, Zhou Wei, Zhang Jun Xi, Tang Lijun, Xu Si bridge. This standard is the first release.IntroductionBefore measurement start, the proposed test, first grasp the basic information on chemicals, according to the state of the product, melting point, boiling point to be tested. A measuring method does not currently exist in each 10-3Pa ~ 105Pa vapor pressure ranges are applicable, and would therefore need to yield Product physical state setting a series of test methods. These test methods are summarized in Table 1 below. Table 1 according to Rao vapor pressure range recommended methods of measurement experiment method product Solid and liquid Pressure range/Pa Repeatability/Reproducibility% /% Kinetic 103 ~ 2 × 10-3 2 × 103 ~ 105 1-5 1-5 Method Static X X 10-1 ~ 105b 5 ~ 10 5 ~ 10 Vapor liquid manometer X X 102 ~ 105 5 ~ 10 5 ~ 10 Vapor pressure balance method X X 10-3 ~ 1 5 ~ 20 50 Gas saturation method X X < 10-3 10 ~ 30 50 from a 84/449/CEE directive. b See GB/T 22228-2008 "industrial chemicals Determination of vapor pressure of solids and liquids within range 10-1Pa to 105Pa static Law" 6.1. Table 1 in the five methods mentioned, only two are preserved. In GB/T 22228-2008 "industrial chemicals vapor pressure of solids and liquids in the range of measurement 10-1Pa to 105Pa Static method and the vapor pressure balance method static method "has been described as a measure of the current, and was evaluated as the most suitable for 0 ℃ ~ 100 ℃ temperature within the range of industrial uses of chemicals. Industrial chemicals Vapor pressure of solids and liquids in 10-3P Rao Rao to 1P Determination of vapor pressure balance within the scope of the law1 ScopeThis standard is to provide for a change in mass by measuring the chemicals industry to determine the vapor pressure method. It is applicable to solid, liquid vapor pressure in the range of 10-3Pa ~ 1Pa. Impurities have a certain impact on the chemical nature of the measurement, such as volatile solvents.2 Terms and definitionsThe following terms and definitions apply to this standard. 2.1 Pressure is applied on top of a solid or liquid product, in units of Pa (Pa). In power engineering in equilibrium, the vapor pressure of a pure product only varies with temperature within a defined temperature range, steam Pressure and temperature of the logarithm of the reciprocal linear. Vapour pressure is an important parameter, designed to predict the concentration of the product in the atmosphere and volatile. Principle 3 Through the product placed in the container vapor vaporized or atomized, and measure to reduce the amount of the product within a certain pressure range; by measuring Quality of products to determine the amount of change in the results.4 ReagentsLiquid nitrogen.5 Instruments5.1 measuring instrument, shown in Figure 1. Place a protective cover on the base, including the protection of the inner cover with a barometer of the evacuation pump, and a vapor measurements with automatic recorder Pressure instrument. The apparatus comprises. a) with a pipe joint and rotary evaporation furnace feed grooves, that is to say to a copper cylindrical container is placed in a flat Copper folder, and then screw it in a stainless steel plate, the lower part of its protruding edges flush. The use of a connector plate secured to the base, so as to be able to surround the inner wall of the rotary evaporator furnace. The use of a mosaic in stainless Heat resistance on steel plates to generate heat, the temperature level is controlled by the thermometer, so that a vacuum furnace. b) the copper lid contains three different sections evaporation holes, three holes each other 90 ℃ distribution. With rotation of the furnace, a small Mouth will likely be moved to be placed in relation to the evaporation furnace located in the more distant notch cooling ring, so that the furnace steam on It can be sprayed onto the balance pan. c) balance. the balance pointer by a small box replacement, mounted on the balance beam and counterweight. Balance beam comprises a gold-plated aluminum can Removing small flat pan, a 0.1mm thickness of the line used to tie standards of quality (weight). And an electro-photographic equipment Recording system. ......Tips & Frequently Asked Questions:Question 1: How long will the true-PDF of GB/T 22229-2008_English be delivered?Answer: Upon your order, we will start to translate GB/T 22229-2008_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 22229-2008_English with my colleagues?Answer: Yes. 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