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GB/T 21792-2008: Determination of flash/no flash -- Closed cup equilibrium method
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Determination of flash/no flash -- Closed cup equilibrium method
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GB/T 21792-2008
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Basic data | Standard ID | GB/T 21792-2008 (GB/T21792-2008) | | Description (Translated English) | Determination of flash/no flash -- Closed cup equilibrium method | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | A80 | | Classification of International Standard | 13.300 | | Word Count Estimation | 12,16 | | Date of Issue | 2008-05-12 | | Date of Implementation | 2008-09-01 | | Quoted Standard | GB/T 3186-2006; GB/T 20777-2006; GB/T 21775; GB/T 21929; ISO 2719-2002; ISO 3170-1988; ISO 3171-1988; ISO 13736-1997; DIN 51755-1974 | | Adopted Standard | ISO 1516-2002, IDT | | Regulation (derived from) | Announcement of Newly Approved National Standards No. 7, 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 method, when maintained at a selected temperature and is in equilibrium under the test conditions, its for the determination of paint, varnish, paint binders, solvents, petroleum and related products whether volatile enough flammable vapor, through the application of an external ignition source when operating in a standard manner, can cause ignition. This standard does not apply to water-based paints, however, these products can be used GB/T 21790 " flashover and non- flashover Rapid equilibrium closed cup method" to test. This standard is applicable to a temperature range of -30��C ~ 110��C, the instrument set according to different temperature ranges have been listed in Table 1. The method is tested using a mixture containing halogenated solvents, may give unexpected results, their results should be carefully explained. | GB/T 21792-2008: Determination of flash/no flash -- Closed cup equilibrium 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. Closed cup equilibrium method
ICS 13.300
A80
National Standards of People's Republic of China
GB/T 21792-2008/ISO 1516.2002
And non-flashover flashover measured Closed cup equilibrium method
(ISO 1516.2002, 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 1516.2002 "and non-flashover flashover measured Closed cup equilibrium method" (in English).
Appendix A of this standard is an informative annex.
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 SZCIQ, People's Republic of China Entry-Exit Inspection and Hubei
Quarantine Bureau.
The main drafters of this standard. Jiang Wei, Chen Xiang, Liu Li, Wanghai Ting, Zhu Hongkun, Zhihong, Cui Hairong, Guo Jian, Zhou Yun, Cai Xiaofeng.
This standard is the first release.
GB/T 21792-2008/ISO 1516.2002
Introduction
This standard describes two closed cup equilibrium method in one, this method is used for testing and non-flashover flashover. Test objects are. color
Paints, varnishes, petroleum and related products. When you need to select a method in both closed cup equilibrium method for testing requires a combination of the other
Balanced law, see GB/T 21790 "and non-flashover flashover - Rapid equilibrium closed cup method" (Ref. [2]).
The criteria used for the determination of non-flashover flashover and instruments with GB/T 21775 "Determination of flash point - Closed cup equilibrium method" as described
Above consensus.
The test method and test conditions did not go in the flash point of the product was measured, was only measured at a selected temperature equilibrium, full product requirements
Foot store, the relevant state laws or regulations, transport and use of flammable product requirements. Therefore, in order to satisfy this object, measured quasi products
Flash point is not really necessary, but it is necessary to determine whether the product will flash fire at a given temperature. Under the test program,
Tested at a temperature equilibrium state is through a mixture of air and vapor above the liquid product within the container and the test to ensure that reference
The difference between the various standard tests designed to minimize between instruments.
GB/T 21792-2008/ISO 1516.2002
And non-flashover flashover measured Closed cup equilibrium method
1 Scope
This standard specifies a method, when maintained at a selected temperature equilibrium and is under test conditions, for determination of color
Whether paint, varnish, paint binders, solvents, petroleum and related products can be volatile enough flammable vapor, through the application of an external ignition source to
When the standard mode operation, can cause ignition.
This standard does not apply to water-based paint, but these products can be used GB/T 21790 "and non-flashover flashover - Rapid equilibrium closed cup
Law "to test (Ref. [2]).
This standard applies to a temperature range of -30 ℃ ~ 110 ℃, depending on the instrument used, temperature ranges listed in Table 1.
When using this method to test a mixture containing a halogenated hydrocarbon solvent, may give abnormal results, its results should be carefully explained.
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)
GB/T 21775 Determination of flash point - Closed cup equilibrium method (ISO 1523.2002, IDT)
GB/T 21929 Tag closed cup flash point assay (ASTMD56.2005, IDT)
ISO 2719.2002 Flash Point by Pensky - Martins (Pensky-Martens) closed cup method
ISO 3170. 1988 Liquid petroleum manual sampling method
ISO 3171. 1988 Petroleum liquids pipeline automatic sampling
ISO 13736.1997 Petroleum products and other liquids - Determination of flash point Abel closed cup method
DIN51755. 1974 Mineral oils and other combustible liquids testing, closed tester used in Abel - Pensky (Abel-Pen-
sky) Determination of flashpoint
3 Terms and Definitions
The following terms and definitions apply to this standard.
3.1
Under test conditions, the ignition source test sample vapor and combustion occurs when the surface of the liquid spread, the lowest obtained sample
Flash point is the temperature (under 101.3kPa corrected to atmospheric pressure).
Principle 4
Mounted in a test sample designed to match with the instrument closed cup, and the cup was placed in a thermostatically controlled bath. The sample was maintained
In setting the equilibrium temperature for at least 10min, by a small flame directly into the test cup ignition test. Observation of the test sample
Are the top vapor is ignited, record the results.
GB/T 21792-2008/ISO 1516.2002
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