GB/T 22228-2008 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 22228-2008: Chemical products for industrial use -- Determination of vapour pressure of solids and liquids in the rang 10-1 to 105 Pa -- Static method Status: Valid
Basic dataStandard ID: GB/T 22228-2008 (GB/T22228-2008)Description (Translated English): Chemical products for industrial use -- Determination of vapour pressure of solids and liquids in the rang 10-1 to 105 Pa -- Static method Sector / Industry: National Standard (Recommended) Classification of Chinese Standard: A80 Classification of International Standard: 13.300 Word Count Estimation: 8,890 Date of Issue: 2008-06-19 Date of Implementation: 2009-02-01 Adopted Standard: NF T20-048-1985, 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 provides a static method for the determination of the vapor pressure of industrial chemicals. This standard applies to the value of vapor pressure at 10-1Pa ~ 105Pa range all solids and liquids. Measurement of impurities on chemical properties have a certain impact, such as volatile solvents. GB/T 22228-2008: Chemical products for industrial use -- Determination of vapour pressure of solids and liquids in the rang 10-1 to 105 Pa -- Static 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 in the rang 10-1 to 105 Pa. Static method ICS 13.300 A80 National Standards of People's Republic of China Industrial chemicals Vapor pressure of solids and liquids in 10-1P Rao Rao to 105P Determination of static method within the scope of 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 NFT20-048. 1985 "industrial chemicals and 105Pa 10-1Pa range of solid and liquid vapor Static pressure measurement method "(French version). For ease of use, has been modified following editorial. a) delete the original standard preface; b) use punctuation "," instead of the original standard by "*" notation; c) 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, Hubei Exit Inspection and Quarantine. Drafters of this standard. Cui Hairong, Wang Xiaobing Guo Jian, Jian Mei, Cheng Ye, Zhou Wei, Ling about Tao, Zhang Jianfeng, Zhang Jun Xi Yang wind, Wang Fan. 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. It is not possible there is a vapor pressure within each range are able to apply a method that is less than the vapor pressure range 10-3Pa ~ 105Pa, which is why the need to set up a series of test methods based on the physical state of the product of reason. These trials Party Method 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 to 25 1-5 Method Static X X 10-1 ~ 105b 5 ~ 10 5 ~ 10 Liquid vapor pressure meter 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 6.1. Five methods mentioned in Table 1, only two are preserved. GB/T 22229-2008 "industrial chemicals vapor pressure of solids and liquids within range 10-3Pa to 1Pa measured vapor Vapor pressure balance method and the method of static pressure balance 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 10-1P Rao Rao to 105P Determination of static method within the scope of1 ScopeThis standard was determined by a static method for industrial chemicals vapor pressure. This standard applies to all values \u200b\u200bof the vapor pressure of solids and liquids within range to 10-1Pa ~ 105Pa. 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 Saturation vapor pressure of solid or liquid substances, expressed in units of Pa. In the case of dynamic equilibrium thermodynamics, the vapor pressure of pure substances only take Depends on the temperature within a certain temperature range, the logarithm of the vapor pressure of the linear function is inversely proportional to temperature. Principle 3 The standard vapor pressure measurement method is based on the thermodynamic equilibrium at a certain temperature within a closed system.4 Reagents4.1 nitrogen. 4.2 Mercury. for vapor pressure in the range of 102 ~ 105Pa. 4.3 silicone or phthalates. for vapor pressure in the range 10Pa ~ 102Pa. 4.4 liquid nitrogen. 4.5 dry ice.5 Instruments5.1 Measuring Instruments The sample was loaded into a glass bulb, the glass bulb at one end connected to the valve, and the other end connected to the U-tube. U-tube that has the right amount for Determination of pressure liquid (4.2 or 4.3). U-tube pressure and the pressure inside the liquid glass bubbles in the sample generated vapor pressure and barometer displays Force values \u200b\u200bmatch. The lower limit of the measuring instrument measures 10-1Pa. The end of the U-tube is connected to a tee, corresponding attaching a vacuum pump, the nitrogen cylinder and pressure gauge (5.6). 5.2 pump (with tubing). 5.3 temperature water bath. temperature adjustment range of 0 ℃ ~ 100 ℃, the minimum temperature adjustment scale is 0.1 ℃. 5.4 Thermometer. STL/0.1, the measurement range is 5 ℃ ~ 105 ℃. Thermometer 5.5. The minimum unit of measurement is 0.1 ℃, the measurement range of 0 ℃ ~ 100 ℃. 5.6 Precision Barometer. Measurement range 10-1Pa ~ 105Pa. ......Tips & Frequently Asked Questions:Question 1: How long will the true-PDF of GB/T 22228-2008_English be delivered?Answer: Upon your order, we will start to translate GB/T 22228-2008_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 22228-2008_English with my colleagues?Answer: Yes. 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