SN/T 1732.15-2015Pyrotechnic composition used for fireworks and firecracker. Part 15: Determination of polyvinyl chloride (English PDF)

Foreword

SN/T 1732 "Fireworks for Fireworks and Firecrackers" is divided into 19 parts.

--- Part 1. Determination of strontium content;

--- Part 2. Determination of dichromate content;

--- Part 3. Determination of zinc content;

--- Part 4. Determination of copper content;

---Part 5. Determination of titanium content;

--- Part 6. Determination of strontium content;

--- Part 7. Determination of lead content;

--- Part 8. Determination of sodium content;

---Part 9. Determination of magnesium content;

--- Part 10. Determination of sulfur content;

--- Part 11. Determination of potassium content;

--- Part 12. Determination of red phosphorus content;

--- Part 13. Determination of boric acid content;

--- Part 14. Qualitative detection methods for dextrin;

---Part 15. Method for the detection of polyvinyl chloride;

---Part 16. Determination of picric acid - High performance liquid chromatography;

---Part 17. Method for the determination of hexachlorobenzene; gas chromatography;

---Part 18. Method for the detection of chlorinated paraffin;

--- Part 19. Detection method of gallic acid - High performance liquid chromatography.

This part is the 15th part of SN/T 1732.

This part is drafted in accordance with the rules given in GB/T 1.1-2009.

This part is proposed and managed by the National Certification and Accreditation Administration.

This section drafted by. Hunan Entry-Exit Inspection and Quarantine Bureau of the People's Republic of China.

1 Scope

This part of SN/T 1732 specifies the qualitative detection method of polyvinyl chloride in fireworks for fireworks and firecrackers by Fourier transform infrared spectroscopy.

This section applies to the detection of polyvinyl chloride in pyrotechnics for fireworks and firecrackers.

2 Normative references

The following documents are indispensable for the application of this document. For dated references, only dated versions apply to this article.

Pieces. For undated references, the latest edition (including all amendments) applies to this document.

GB/T 15813 Fireworks and firecracker molding agent sample separation and crushing

3 Method summary

The polyvinyl chloride in the pyrotechnic drug sample is extracted by tetrahydrofuran, purified by anhydrous ethanol, and then subjected to Fourier transform infrared spectrometer.

For analysis, the infrared spectrum of the sample is qualitatively analyzed with a standard spectrum of polyvinyl chloride to determine whether the sample contains polyvinyl chloride.

4 Reagents and materials

All reagents were of analytical grade unless otherwise stated.

4.1 Potassium bromide. pure spectrum.

4.2 Anhydrous ethanol.

4.3 Tetrahydrofuran.

4.4 Polyvinyl chloride standard.

5 Instruments and equipment

5.1 Infrared spectrometer.

5.2 Analytical balance.

5.3 Centrifuge. The speed is not less than 3000r/min.

5.4 Quick Mixer.

5.5 Glass test tube. 10 mL.

5.6 Tip mouth pipette.

6 Analysis steps