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SN/T 1732.11-2014: Pyrotechnic composition used for fireworks and firecracker` Part 11: Determination of potassium content
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SN/T 1732.11-2014	English	159	Add to Cart	3 days [Need to translate]	Pyrotechnic composition used for fireworks and firecracker` Part 11: Determination of potassium content
SN/T 1732.11-2006	English	239	Add to Cart	2 days [Need to translate]	Fireworks pyrotechnics Part 11: Determination of potassium content

SN/T 1732.11-2014: Pyrotechnic composition used for fireworks and firecracker` Part 11: Determination of potassium content

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Pyrotechnic composition used for fireworks and firecracker` Part 11. Determination of potassium content People's Republic of China Entry-Exit Inspection and Quarantine Standards Instead of the SN/T 1732.11-2006 Fireworks with pyrotechnic Part 11. Determination of potassium content Part 11. Determinationofpotassiumcontent Issued on. 2014-04-09 2014-11-01 implementation People's Republic of China The State Administration of Quality Supervision, Inspection and Quarantine released

Foreword

SN/T 1732 "with fireworks pyrotechnic" is divided into 13 parts. --- Part 1. Determination of barium content; --- Part 2. Determination of dichromate; --- 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. This section SN/T 1732 Part 11. This section drafted in accordance with GB/T 1.1-2009 given rules. This section replaces the SN/T 1732.11-2006, main technical changes in addition to editorial changes outside as follows. --- Standard "Sample volume" from "about 5g" was changed to "about 2g ~ 5g"; --- "Scope" in the determination of the increase is not less than 1% of potassium content. This section proposed and managed by the National Certification and Accreditation Administration Committee. This section is drafted. Guangxi CIQ. The main drafters of this section. Suppliers Jie, Wu Junyi, Shaw rejuvenation. This part of the standard replaces the previous editions are. --- SN/T 1732.11-2006. Fireworks with pyrotechnic Part 11. Determination of potassium content Warning. Use of this standard shall have a person experiences regular laboratory work. This standard does not point out all possible security issues, Users are responsible for the use of appropriate safety and health practices and to ensure compliance with the conditions of the relevant national laws. Pyrotechnic covered by this standard Pharmacy is a flammable and explosive dangerous goods, the following is the most important safety regulations. a) Preparation of the sample should have security measures carried out under conditions; b) sample preparation and storage can not exceed the amount of security conditions allowed; c) drying the sample should be safe explosion-proof oven, the drying temperature does not exceed 55 ℃.

1 Scope

SN/T 1732 This section specifies the method for determination of potassium content in pyrotechnic fireworks and firecrackers. This section applies to pyrotechnic fireworks with no less than 1% of potassium content determination.

2 Normative references

The following documents for the application of this document is essential. For dated references, only the dated version suitable for use herein Member. For undated references, the latest edition (including any amendments) applies to this document. Laboratory use specifications and test methods GB/T 6682 Analysis GB/T 8170 repair value expressed about the rules and limit values and judgment GB/T 15813-1995 Fireworks forming agent sample separation and crushing Principle 3 After appropriate sample pretreatment, dissolved in hot water and filtered, the test solution containing potassium ions in a weakly alkaline medium with sodium tetraphenylborate results in four TETRAPHENYLBORATE precipitate potassium, potassium content was measured in a sample with gravimetric method.

4 Scheme

NaB (C6H5) 4 K = KB (C6H5) 4 ↓ Na

5 Reagents

Unless otherwise indicated in the analysis using only confirm at least three water analytical grade reagents and GB/T 6682 stipulated. 5.1 ethanol. 5.2 acetone. 5.3 formaldehyde. 5.4 sodium hydroxide solution (0.2%). 5.5 Disodium ethylenediaminetetraacetate (EDTA) solution (4%). ...