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GB/T 38298-2019: Test method of auto-ignition temperature for solid chemicals
Status: Valid
| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| GB/T 38298-2019 | English | 119 |
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Test method of auto-ignition temperature for solid chemicals
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GB/T 38298-2019
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Basic data | Standard ID | GB/T 38298-2019 (GB/T38298-2019) | | Description (Translated English) | Test method of auto-ignition temperature for solid chemicals | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | A80 | | Classification of International Standard | 13.300 | | Word Count Estimation | 6,631 | | Date of Issue | 2019-12-10 | | Date of Implementation | 2020-04-01 | | Issuing agency(ies) | State Administration for Market Regulation, China National Standardization Administration | GB/T 38298-2019: Test method of auto-ignition temperature for solid chemicals---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.
Test method of auto-ignition temperature for solid chemicals
ICS 13.300
A80
National Standards of People's Republic of China
Test method for automatic ignition temperature of solid chemicals
2019-12-10 release
2020-04-01 implementation
State Administration of Market Supervision
Published by the National Standardization Management Committee
Foreword
This standard was drafted in accordance with the rules given in GB/T 1.1-2009.
This standard was proposed and managed by the National Technical Committee for Standardization of Hazardous Chemicals Management (SAC/TC251).
This standard was drafted. Xi'an Institute of Modern Chemistry, Nanjing University of Science and Technology, China Inspection and Traceability Jiangsu Technology Service Co., Ltd., and Shanghai Access
Environmental Inspection and Quarantine Bureau Industrial Products and Raw Materials Testing Technology Center, Changzhou Import and Export Industrial and Consumer Product Safety Testing Center, North University of China.
The main drafters of this standard. Jin Penggang, Pan Feng, Liu Xiangyang, Jiang Wei, Liu Junfeng, Xu Sen, Beifengli, Zhang Xingming, Cao Weiguo, Zhang Jianxin,
Wang Zhimin.
Test method for automatic ignition temperature of solid chemicals
Caution --- Personnel using this standard should have practical experience in regular laboratory work. This standard does not address all possible security issues.
question. It is the responsibility of the user to take appropriate safety and health measures and to ensure compliance with the conditions stipulated by relevant national regulations.
1 Scope
This standard specifies the test method for the automatic ignition temperature of solid chemicals, that is, the automatic point of extrapolation of solid chemicals under a large amount of accumulation
Fire temperature prediction method.
This standard is applicable to the test of automatic ignition temperature of powdery or granular chemicals.
2 Normative references
The following documents are essential for the application of this document. For dated references, only the dated version applies to this article
Pieces. For undated references, the latest version (including all amendments) applies to this document.
GB/T 5330 Industrial wire woven square mesh screen
GB/T 30429 Industrial Thermocouple
3 Method principle
The solid auto-ignition temperature is the ambient temperature when the temperature of the sample changes suddenly when the solid powder is heated. As the sample test size increases
Add, chemical auto-ignition temperature will decrease accordingly. By measuring the ignition temperature of the sample under different test sizes (small sizes), the
Extrapolated auto-ignition temperature for samples in bulk conditions.
4 Reagents or materials
Caution --- If it is explosive, the automatic ignition temperature test under small size conditions should be carried out first.
The sample to be tested should be powdery or granular.
5 Equipment
5.1 Thermocouple. K type, range 0 ℃ ~ 1200 ℃, accuracy 0.1 ℃, should meet the requirements of GB/T 30429.
5.2 Metal mesh container. It shall meet the requirements of GB/T 5330. During the test, the cylindrical metal mesh container is preferred (the volume can be selected)
100cm3, 1000cm3, 1600cm3, etc.), the diameter of the container is equal to the height of the container, and the mesh side length of the metal mesh is 0.05mm; also
Other shapes of metal mesh containers can be selected, but the influence of container shape needs to be considered when processing data.
5.3 Sample holder. used to fix the metal mesh container.
5.4 Environmental test box. The heating rate of the box is adjustable, and the heating medium is air. The temperature control range of the test box is from room temperature to 400 ℃.
5.5 Temperature data acquisition instrument. The frequency of data acquisition is not less than 1Hz.
5.6 The schematic diagram of the auto-ignition test is shown in Figure 1.
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