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GB/T 22052-2008: Test method for vapor pressure -- Temperature relationship and initial decomposition temperature of liquids by isoteniscope
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| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| GB/T 22052-2008 | English | 234 |
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Test method for vapor pressure -- Temperature relationship and initial decomposition temperature of liquids by isoteniscope
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GB/T 22052-2008
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Basic data | Standard ID | GB/T 22052-2008 (GB/T22052-2008) | | Description (Translated English) | Test method for vapor pressure -- Temperature relationship and initial decomposition temperature of liquids by isoteniscope | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | A80 | | Classification of International Standard | 13.300 | | Word Count Estimation | 12,177 | | Date of Issue | 2008-06-30 | | Date of Implementation | 2009-02-01 | | Quoted Standard | ASTM D2878; ASTM E230 | | Adopted Standard | ASTM D2879-1997 (2007), 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 includes the pure liquid vapor pressure, the vapor pressure of the mixture and pure liquid and mixed liquid initial thermal decomposition temperature was measured. This standard applies to the test temperature, the vapor pressure of borosilicate bottle at 133Pa ~ 101. 3kPa between the determination of the vapor pressure of the liquid. | GB/T 22052-2008: Test method for vapor pressure -- Temperature relationship and initial decomposition temperature of liquids by isoteniscope
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Test method for vapor pressure. Temperature relationship and initial decompostition temperature of liquids by isoteniscope
ICS 13.300
A80
National Standards of People's Republic of China
Determination of vapor pressure of the liquid and liquid vapor pressure gauge
Temperature relationship and the initial decomposition temperature method
Posted 2008-06-30
2009-02-01 implementation
Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China
Standardization Administration of China released
Foreword
This standard is equivalent to using the ASTMD2879. 97 (2007) "Determination of the liquid vapor liquid vapor pressure and temperature gauges relations
And Methods "initial decomposition temperature (in English).
The Standard Appendix A and Appendix B are informative appendices.
This standard is managed by the National Standardization Technical Committee chemicals dangerous (SAC/TC251) and focal points.
This standard is drafted by. The Chemical Institute of standardization, Hubei Exit Inspection and Quarantine.
The main drafters of this standard. Cui Hairong, Mei Jian Guo Jian, Wang Xiaobing, Ye Cheng, Ling about Tao, Zhang Jianfeng, wind Yang, Wang Fan.
This standard is the first release.
Determination of vapor pressure of the liquid and liquid vapor pressure gauge
Temperature relationship and the initial decomposition temperature method
1 Scope
This standard includes a pure liquid vapor pressure, vapor pressure of the mixture (in a sealed tube, filling amount when 40% ± 5%) and pure liquid
Hot body and the initial decomposition temperature of the liquid mixture is measured. This standard applies to the test temperature, the vapor pressure of borosilicate bottle in
Determination of the liquid vapor pressure 133Pa ~ 101.3kPa between.
This test method is suitable for the temperature range from ambient temperature to 748K. Such as providing a suitable thermostatic bath, the temperature range may be lower than the environment
temperature.
NOTE. Liquid vapor pressure gauge is a constant volume device, which measures the use of different Results mixing with other liquids of constant distillation.
Most petrochemical products boiling point of the range is very wide, which can study their vapor pressure to learn. Even the symbol
Raoult's law over the combined mixture, after the lighter components are separated, the vapor pressure will gradually decrease, in particular ingredients mixed
Miscellaneous mixture, e.g., the preparation of lubricating oil solvent dewaxing process. Release pressure of the mixture in a closed container may be higher than that calculated by
The average pressure was 100 times higher ingredient, liquid vapor pressure gauge may be used to simulate a closed container. To determine the open system of surface evaporation
Gas pressure, recommended reference standard ASTMD2878.
This standard has nothing to do with safety, only use correlation. Former user of this standard, has the responsibility to establish appropriate safety and health regulations
Fan. Its special hazard statements, see 6.5,6.10 and 6.12.
2 Normative references
The 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.
Evaluate and test methods ASTMD2878 lubricating surface vapor pressure and molecular weight
ASTME230 standard thermocouple temperature with electromotive force (EMF) chart
3 Terms, definitions and symbols
3.1 Terms and Definitions
The following terms and definitions apply to this standard.
3.1.1
The percentage of steam in a closed system.
Note. The specific Fig. 1, in the right part of the liquid vapor pressure gauge at the point A has vapor.
3.2 Symbol
The following symbols apply to this standard.
--- The T temperature, K;
Pe --- test measured the total system pressure;
--- PA sample was dissolved in a portion of the fixed pressure of the gas generated;
After the Pc --- corrected vapor pressure, Pa.
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