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Dangerous goods -- Test method for vapour pressure of flammable liquids
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Basic data
| Standard ID | GB/T 21616-2008 (GB/T21616-2008) |
| Description (Translated English) | Dangerous goods -- Test method for vapour pressure of flammable liquids |
| Sector / Industry | National Standard (Recommended) |
| Classification of Chinese Standard | A80 |
| Classification of International Standard | 13.300 |
| Word Count Estimation | 5,567 |
| Date of Issue | 2008-04-01 |
| Date of Implementation | 2008-09-01 |
| Adopted Standard | UNITAR ST/SG/AC.10/1, UNECE ST/SG/AC.10/11, NEQ |
| Regulation (derived from) | Announcement of Newly Approved National Standards No. 5, 2008 (No. 118 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 dangerous flammable liquid vapor pressure test equipment, test procedures and test reports. This standard applies to flammable liquids of dangerous goods vapor pressure Test. |
GB/T 21616-2008: Dangerous goods -- Test method for vapour pressure of flammable liquids
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Dangerous goods. Test method for vapour pressure of flammable liquids
ICS 13.300
A80
National Standards of People's Republic of China
Dangerous Goods Flammable liquid vapor pressure test method
Posted 2008-04-01
2008-09-01 implementation
Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China
Standardization Administration of China released
Foreword
This corresponds to the standard of the United Nations "on the Recommendations on the Transport of Dangerous Goods Model Regulations" and the United Nations "was built on the Transport of Dangerous Goods
Recommendations Manual of Tests and Criteria ", with its non-equivalent. Its technical content and said full agreement in the standard text
The present format press GB/T 1.1-2000 made editorial changes.
This standard is managed by the National Standardization Technical Committee chemicals dangerous (SAC/TC251) and focal points.
This standard is drafted by. Tianjin Inspection and Quarantine Institute of Science and Technology.
Participated in the drafting of this standard. Jiangnan University, the Chemical Institute of Standardization, Tianjin CIQ.
The main drafters of this standard. Lu Gang, Wangli Bing, Xu came Lining Tao, Wang Xiaobing, in Rui Chi.
This standard was first formulated.
Dangerous Goods Flammable liquid vapor pressure test method
1 Scope
This standard specifies the instruments, test procedures and test report dangerous flammable liquid vapor pressure test.
This standard applies to the determination of the vapor pressure test dangerous flammable liquid.
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.
GB 19458 safety inspection of hazardous properties of dangerous goods - General specifications
United Nations "on the Recommendations on the Transport of Dangerous Goods Model Regulations"
United Nations "on the Recommendations of the Transport of Dangerous Goods Manual of Tests and Criteria"
3 Terms and Definitions
United Nations "on the Recommendations on the Transport of Dangerous Goods Model Regulations" UN "Recommendations on Transport of Dangerous Goods trials and
Standards Manual ", GB 19458 and established the following terms and definitions apply to this standard.
3.1
This category refers to the dangerous strains of flammable liquids, liquid mixtures or liquids containing solids, including but not because of its hazardous properties have been included
Other types of liquid, the closed cup flash point test flash point equal to or below 60 ℃.
4 Test Equipment
Vapor pressure tester, thermometers, timers, etc.
5 test procedure
5.1 The sample was cooled to 0 ℃ ~ 1 ℃, and to ensure that the liquid volume of 70% to 80% of the containers in the, when the liquid volume to meet the requirements immediately
Sealing, After vigorous shaking, continue to cool at least 2min.
5.2 packed vapor pressure measuring device upside down, so that the sample into the measuring chamber, with the long axis parallel to the direction of the measuring device and shake it vigorously.
5.3 The measuring device is immersed in a temperature of 37.8 ℃ ± 0.1 ℃ water bath, the assay should be slightly inclined, so that the measuring chamber is located just off underwater
Surface, and carefully check for leaks at the connection or oil spills, leaks or spills if not found, put the measuring device is immersed in a water bath, so that liquid water bath
Measuring chamber above the top surface of at least 25mm.
5.4 Throughout the test, the observation equipment leaks or spills, leaks any time leakage is found to have discarded the sample, with a new test
Redo the test sample.
5.5 After the vapor pressure measuring device is immersed in a water bath 5min, gently tap the pressure gauge, and observe the reading.
5.6 The measuring device is removed from the water bath, reverse violently shaken, back into the water bath, complete this operation time as short as possible to avoid
Measuring cooling.
5.7 To ensure the equilibrium state, the operation was repeated at least five times 5.6, at intervals of at least 2min, until the last two successive readings are equal.
5.8 read the final table constant pressure gauge scale for the table read 0.50kPa to 0.25kPa. Pressure recorded as a sample of "uncorrected
Vapor pressure. "
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