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GB/T 21790-2008: Determination of flash/ no flash -- Rapid equilibrium closed cup method
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| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| GB/T 21790-2008 | English | 354 |
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Determination of flash/ no flash -- Rapid equilibrium closed cup method
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GB/T 21790-2008
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Basic data | Standard ID | GB/T 21790-2008 (GB/T21790-2008) | | Description (Translated English) | Determination of flash/ no flash -- Rapid equilibrium closed cup method | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | A80 | | Classification of International Standard | 13.300 | | Word Count Estimation | 18,155 | | Date of Issue | 2008-05-12 | | Date of Implementation | 2008-09-01 | | Quoted Standard | GB/T 3186-2006; GB/T 20777-2006; ISO 3170-2004; ISO 3171-1988; ISO 3679-2004 | | Adopted Standard | ISO 3680-2004, IDT | | Regulation (derived from) | Announcement of Newly Approved National Standards No. 7 of 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 a standard test conditions, paint, varnish, paint binders, adhesives, petroleum and related products, in -30��C ~ 300��C temperature range of flammable vapor volatilized by the ability of the test flame ignited in a way. Used in conjunction with a flash point of the detector, the standard fatty acid methyl esters are also suitable non- flash burning flash fire test. | GB/T 21790-2008: Determination of flash/ no flash -- Rapid equilibrium closed cup 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.
Determination of flash/no flash. Rapid equilibrium closed cup method
ICS 13.300
A80
National Standards of People's Republic of China
GB/T 21790-2008/ISO 3680.2004
And non-flashover flashover - Rapid equilibrium closed cup method
(ISO 3680.2004, IDT)
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
This standard is identical with ISO 3680.2004 "and non-flashover flashover - Rapid equilibrium closed cup method" (in English).
The Standard Appendix A and Appendix B are normative, Appendices C and D 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. People's Republic of China Shanghai Entry-Exit Inspection and Quarantine Bureau.
Participated in the drafting of this standard. People's Republic of China Hubei Exit Inspection and Quarantine, Shenzhen People's Republic of China Entry-Exit Inspection and
Quarantine Bureau.
The main drafters of this standard. Jiang Wei, Chen Xiang, Wanghai Ting, Zhu Hongkun, Cui Hairong, Guo Jian, Liu Zhihong, Wu Jingwu, Zhou Yun, Zhao Yi Ching.
This standard is the first release.
GB/T 21790-2008/ISO 3680.2004
Introduction
This standard describes two closed cup equilibrium method in one, for the determination of paints, varnishes, paint binders, solvents, adhesives, oil and its phase
Flashover flashover performance and non-off products. When balancing method to choose a closed cup test required in combination with another method, see
GB/T 21792 "flashover flashover determination and non-equilibrium closed cup method" (see reference [4]). When connecting the flash point detector (see A.1.6),
This standard is also suitable for fatty acid methyl ester (FAME) fuel and non-flash flash fire assay.
In this standard and GB/T 21792, the test is only a mixture of air and vapor at the top of the product in the test product and the test vessel
At a temperature equilibrium state to perform.
This test method does not measure the flash point of the product, only to make products at a selected temperature equilibrium to meet storage, transport and use of flammable products
Relevant laws or regulations. Therefore, based on this point, there is no need to determine the exact flash point of the product, but it is necessary to determine the product
Whether the flash fire at a given temperature.
Compared with GB/T 21792 requirements in this standard are described in the instrument can be faster, smaller amount (or the amount of sample was 2mL
4mL) gave similar results. Furthermore, in addition to routine laboratory use, which can be made into a portable instrument to facilitate the real scene
Test.
Collaborative work (see Ref. [6]) that the use of this procedure results obtained are comparable. The method is tested with a halogenated hydrocarbon
When a mixture of solvents, may give abnormal results, its results should be carefully explained (see Ref. [7]).
A constant physical and chemical properties of the test substance is not a flash point. They and instrument design and operating conditions of the instrument used in the process
Executive Order are closely related. Therefore, only the flash point according to a standard test method to define, and not described in detail through the use of this standard
The results with different test methods or instruments available, there is no universally effective correlation between them.
GB/T 21790-2008/ISO 3680.2004
And non-flashover flashover - Rapid equilibrium closed cup method
1 Scope
This standard specifies under standard test conditions, paints (including water-based paints), varnishes, paint binders, adhesives, petroleum and related
Product within a temperature range of -30 ℃ ~ 300 ℃ by volatile flammable vapor is a way to test the ability to ignite the flame. And a flash point
When the detector (see A.1.6) for use with the present standards for fatty acid methyl ester (FAME) fuel and non-flash flashover test.
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/T 3186-2006 Paints, varnishes and raw materials for paints and varnishes - Sampling (ISO 15528.2000, IDT)
GB/T 20777-2006 Paints and varnishes examination and preparation of samples (ISO 1513.1992, IDT)
ISO 3170.2004 Liquid petroleum manual sampling method
ISO 3171. 1988 Petroleum liquids pipeline automatic sampling
ISO 3679.2004 Determination of flash point - Rapid equilibrium closed cup method
3 Terms and Definitions
The following terms and definitions apply to this standard.
3.1
Applications under the specified test conditions of temperature flame, corrected to atmospheric pressure 101.3kPa, to determine whether the test sample vapor instantly
Ignited, the flame can spread through the liquid surface.
Principle 4
Under the conditions of test temperature, the test to determine the volume of the sample introduced into the sample cup, after a predetermined time, application of the test flame was observed
Whether flashover.
5 Reagents and materials
5.1 cleaning solvent
A method for cleaning the sample cup and the cup covered with the remaining residue previous test a suitable solvent.
Note. The choice of solvent based on previous adhesion ability of the test material and the nature of the residue. Low volatile aromatic solvents (benzene) is applied to remove the residual oil
Thereof, and the toluene - acetone - methanol mixed solvent for removing gum deposits.
5.2 Calibration liquid
A series of certified reference material (CRM) and/or standard sample (SWS), see Appendix C.
6 Instruments
6.1 Overview
Appendix A has been described in the instrument, including the test cup and lid system description, as well as their diameters and special requirements. The inner
Yung included in Figure A. 1 to FIG. A. 5. And non-flashover flashover test in the temperature range of -30 ℃ ~ 300 ℃ need more than one instrument.
GB/T 21790-2008/ISO 3680.2004
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