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SN/T 1828.16-2019: Test method of classification for import and export dangerous goods - Part 16: Nitrate substance
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Test method of classification for import and export dangerous goods - Part 16: Nitrate substance
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Test method of classification for import and export dangerous goods. Part 16: Nitrate substance
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Import and export of dangerous goods classification test methods - Part 16: nitrates substances
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Basic data | Standard ID | SN/T 1828.16-2019 (SN/T1828.16-2019) | | Description (Translated English) | Test method of classification for import and export dangerous goods - Part 16: Nitrate substance | | Sector / Industry | Commodity Inspection Standard (Recommended) | | Classification of Chinese Standard | A80 | | Word Count Estimation | 8,816 | | Date of Issue | 2019-10-25 | | Date of Implementation | 2020-05-01 | | Older Standard (superseded by this standard) | SN/T 1828.16-2013 | | Regulation (derived from) | General Administration of Customs Announcement No. 166 of 2019 | | Issuing agency(ies) | General Administration of Customs | SN/T 1828.16-2019: Test method of classification for import and export dangerous goods - Part 16: Nitrate substance
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(Test method for classification of dangerous goods for import and export-Part 16. Nitrate substances)
ICS 55.180.01A80
People's Republic of China Entry-Exit Inspection and Quarantine Industry Standard
SN/T 182.8.16-2019 replaces Sn/T 182.8.16-2013
Classification test method for import and export dangerous goods
Part 16. Nitrate substances
Published on October 19,.2015
2020-05-01 implementation
Published by the General Administration of Customs of the People's Republic of China
Foreword
SN/T 1828 "Classification Test Method for Import and Export Dangerous Goods" is divided into 17 parts.
--- Part 1. General rules;
--- Part 2. Civil explosives;
--- Part 3. Oxides;
--- Part 4. Corrosive substances;
--- Part 5. gas mixture;
--- Part 6. Emission of flammable substances in contact with water;
--- Part 7. Compressed gas;
--- Part 8. Organic peroxides;
--- Part 9. Toxic substances;
--- Part 10. Toxic gases;
--- Part 11. Flammable solids;
--- Part 12. Flammable gas;
--- Part 13. Flammable liquids;
--- Part 14. Lithium battery pack;
--- Part 15. Self-heating solids;
--- Part 16. Nitrate substances;
--- Part 17. Marine pollutants.
This part is the 16th part of Sn/T 1828.
This section is drafted in accordance with the requirements of GB/T 1.1-2009.
This section is a revision of the Sn/T 182.8.16-2013 "Classification Test Method for Import and Export Dangerous Goods Part 16 Nitrate Substances"
The main differences between this section and Sn/T 182.8.16-2013 are as follows.
--- The text format of this section is prepared in accordance with GB/T 1.1-2009;
--- Increase 5.4.3 chapter.
This section is proposed and managed by the General Administration of Customs of the People's Republic of China.
This section was drafted. Tianjin Customs, People's Republic of China.
The main drafters of this section. Lu Gang, Cao Lijing, Zhang Yinbao, Pan Hongrui, Wang Yuanyuan.
The previous versions of the standards replaced by this section are.
--- SN/T 182.8.16-2006, Sn/T 182.8.16-2013.
SN/T 182.8.16-2019
Classification test method for import and export dangerous goods
Part 16. Nitrate substances
WARNING-Due to its own danger, the testing laboratory should pay special attention to the health and safety requirements required by regulations.
1 Scope
This part of SN/T 2818 specifies the test requirements, tests and category determinations for import and export of solid inorganic nitrate dangerous goods.
This section applies to the test of import and export of solid inorganic nitrate (except ammonium nitrate) dangerous goods.
2 Normative references
The following documents are essential for the application of this document. For dated references, only the dated version applies to this document.
file. For undated references, the latest version (including all amendments) applies to this document.
United Nations Recommendations, Tests and Standards Manual on the Transport of Dangerous Goods (Revision 6)
3 Terms and definitions
The following terms and definitions established in the United Nations Manual of Recommendations, Tests and Standards on the Transport of Dangerous Goods (Revision 6) apply.
Used in this document.
3.1
4 test requirements
4.1 It shall be checked whether the substance to be used in the form of transport contains particles smaller than 500 μm in diameter. If the powder with a diameter of less than 500 μm accounts for more than 10% of the total mass, or the substance is fragile, all test samples should be ground into powder before testing, so as to take care
Reduced cargo size during loading and unloading and transportation.
4.2 The experiment requires a certain degree of ventilation, but the fume hood or other ventilation area with an air velocity of not more than 0.5m/s is used to exhaust the smoke.
The system should be suitable for absorbing toxic fumes.
4.3 The solid oxidation test is carried out at normal pressure and ambient temperature 20 ℃ ± 5 ℃.
5 Test
5.1 Test items
Oxidative solids test.
5.2 Number of samples
500g of representative substance was randomly selected from the goods to be inspected for the test of hazardous characteristics.
SN/T 182.8.16-2019
5.3 Test preparation
5.3.1 Potassium bromate reference substance
It is sieved but should not be ground. The particle size is from 0.15mm to 0.30mm. It is industrially pure. Dry to constant weight (at least 12h) at 65 ° C, and then place
Return to the desiccator (with desiccant), cool and set aside.
5.3.2 Fiber
Cellulose filaments, with a length of 50 μm to 250 μm and an average diameter of 25 μm. The dried cellulose filament is made into a thin layer with a thickness of not more than 25 mm, dried to a constant weight (at least 4 h) at 105 ° C, and then placed in a desiccator (with a desiccant), and cooled for later use. Moisture content (based on dry weight) should
Less than 0.5%, if necessary, can extend the drying time.
5.3.3 Ignition source
That is, an inert metal wire (such as nickel/chromium) connected to the power supply should meet the following characteristics.
a) Length. 30cm ± 1cm;
b) Diameter. 0.60mm ± 0.05mm;
c) Resistance. 6.0Ω/m ± 0.5Ω/m;
d) Power consumption of metal wire. 150W ± 7W;
e) See Figure A in Appendix A for metal wires. The shape shown in Figure 1.
5.4 Test equipment
5.4.1 Glass funnel
A 60 ° glass funnel with a closed end and an inner diameter of 70 mm.
5.4.2 Test plate
The test slab should be impervious and meet the following requirements.
a) Length. 150mm;
b) width. 150mm;
c) thickness. 6mm;
d) Thermal conductivity (at 0 ° C). 0.23W (m · K).
5.4.3 Balance
Can be accurate to 0.01g.
5.5 Test procedure
5.5.1 30.0g ± 0.1g of the reference material and fiber mixture are arranged according to the mass ratio of potassium bromate to cellulose 3. 7, 2. 3 and 3. 2.
30.0g ± 0.1g of the substance to be tested (the particle size is the particle size to be used for transportation) and the cellulose mixture according to the mass ratio of the sample to the cellulose
For 4. 1 and 1. 1 configurations, each part of the mixture should be mechanically mixed as thoroughly as possible without excessive force.
5.5.2 Use a glass funnel to make the mixture into a truncated cone with a bottom diameter of 70mm. Place this cone sample on a flat surface with low thermal conductivity
Flat ring metal ignition wire.
5.5.3 Connect the ignition wire to the power source and keep it energized during the test. If the mixture does not catch fire and burn, keep it on for 3 min. Remember
The recorded burn time is from power on to the end of the main reaction (eg flame, hot or flameless combustion). Intermittent reaction after the main reaction
Responses such as sparks or crackles should not be considered. If the heated wire breaks during the test, the test should be repeated. For each sample
SN/T 182.8.16-2019
Five parallel experiments were performed.
6 category determination
6.1 Determination of danger level
Perform tests in accordance with 5.5 to determine whether dangerous goods should be classified as 5.1 oxidizing substances and classified as dangerous according to Table 1.
6.2 Judgment of packing level
According to its danger level, select the applicable packaging category according to Table 1.
Table 1 Whether the dangerous goods should be classified into 5.1 oxidizing substances and the applicable packaging category
The mass ratio of the sample to cellulose was 4. 1 and 1. 1.
Average burning time during test
Whether it should be included in 5.1
Oxidizing substance hazard class applicable packaging category
Mixture of potassium bromate and cellulose with a mass ratio of ≤ 3. 2
The average burning time is highly dangerous for Class I packaging
The mass ratio of the sample to cellulose was 4. 1 and 1. 1.
Average burning time during test
Whether it should be included in 5.1
Oxidizing substance hazard class applicable packaging category
Mixture of potassium bromate and cellulose with a mass ratio of ≤ 2. 3
Moderately flammable and does not meet Class I packaging standards are moderately hazardous Class II packaging
Mixture of potassium bromate and cellulose with a mass ratio of ≤ 3. 7
Mildly dangerous Class III packaging with an average burning time that does not meet the Class I and Class II packaging standards
No fire or burning, or mass ratio of potassium bromate and cellulose
Average burning time for mixtures > 3. 7
Should not be included in 5.1
Oxidizing substances--
See Appendix B for examples of nitrate hazard assessment.
SN/T 182.8.16-2019
Appendix A
(Normative appendix)
Test plate and ignition wire
Figure A. 1 Test plate and ignition wire
A- bottom of cone sample (70mm diameter); B- heating wire; C- low thermal conductivity plate
SN/T 182.8.16-2019
Appendix B
(Informative appendix)
Example of nitrate risk assessment
Table B. 1 Example of risk assessment of nitrates
Material average burning time (seconds) Result
4. 1 1. 1
Ammonium nitrate (crystalline)
Calcium nitrate (anhydrous)
Calcium nitrate (tetrahydrate)
Ammonium nitrate
Cobalt nitrate (hexahydrate)
Nickel nitrate
Sodium nitrate
Strontium nitrate (anhydrous)
Ⅲ packaging
Ⅱ packaging
Non-5.1 items
Ⅱ packaging
Non-5.1 items
Non-5.1 items
Ⅱ packaging
Non-5.1 items
Burning time of reference substance and cellulose mixture
3. 7 potassium bromate/cellulose for 100 seconds
2. 3 potassium bromate/cellulose for 54 seconds
3. 2 potassium bromate/cellulose for 4 seconds
Note. The test results listed are for illustration only, because the results obtained by using an oxidant will depend on its particle size and so on.
SN/T 182.8.16-2019
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