HG/T 3247-2017 English PDF (HGT3247-2017)

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HG/T 3247-2017: Potassium perchlorate for industrial use
HG/T 3247-2017
HG
CHEMICAL INDUSTRY STANDARD
OF THE PEOPLE’S REPUBLIC OF CHINA
ICS 71.060.50
G 12
Record No.: 60522-2018
Replacing HG/T 3247-2008
Potassium Perchlorate for Industrial Use
工业高氯酸钾
ISSUED ON: NOVEMBER 07, 2017
IMPLEMENTED ON: APRIL 01, 2018
Issued by: Ministry of Industry and Information Technology of PRC
Table of Contents
Foreword ... 3
1 Scope ... 5
2 Normative References ... 5
3 Molecular Formula and Relative Molecular Mass ... 6
4 Classification ... 6
5 Requirements ... 7
6 Test Methods ... 7
7 Inspection Rules ... 26
8 Markings and Labels ... 27
9 Packaging, Transportation and Storage ... 27
Potassium Perchlorate for Industrial Use
Warning: According to the provisions of Clause 6 in GB 12268-2012, this product
belongs to the oxidizing substances of item 5.1 in category 5. Care shall be taken
during operation. Personnel using this standard shall have practical experience
working in formal laboratory. This standard does not point out all possible safety
issues. It is the user's responsibility 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 requirements, test methods, inspection rules, marking,
labels, packaging, transportation, and storage of potassium perchlorate for industrial
use.
This Standard is applicable to potassium perchlorate for industrial. This product is
mainly used to manufacture fireworks and firecrackers, safety matches, meteorological
rockets, civil ignition coal, oxidants, and automobile airbags, etc.
2 Normative References
The following documents are essential to the application of this document. For the
dated documents, only the versions with the dates indicated are applicable to this
document; for the undated documents, only the latest version (including all the
amendments) are applicable to this document.
GB 190-2009 Packing Symbol of Dangerous Goods
GB/T 191-2008 Packaging - Pictorial Marking for Handling of Goods
GB/T 3051-2000 Inorganic Chemical Products for Industrial Use - General Method
for Determination of Chloride Content - Mercurimetric Method
GB/T 6003.1-2012 Test Sieves - Technical Requirements and Testing - Part 1: Test
Sieves of Metal Wire Cloth
GB/T 6678 General Principles for Sampling Chemical Products
GB/T 6682-2008 Water for Analytical Laboratory Use - Specification and Test
Methods
GB/T 8170 Rules of Rounding off for Numerical Values and Expression and
Judgement of Limiting Values
GB 10631-2013 Safety and Quality for Fireworks
GB 12268-2012 List of Dangerous Goods
GB 12463-2009 General Specifications for Transport Packages of Dangerous
Goods
HG/T 3696.1 Inorganic Chemicals for Industrial Use - Preparations of Standard
and Reagent Solutions for Chemical Analysis - Part 1: Preparations of Standard
Volumetric Solutions
HG/T 3696.2 Inorganic Chemicals for Industrial Use - Preparations of Standard
and Reagent Solutions for Chemical Analysis - Part 2: Preparations of Standard
Solutions for Impurity
HG/T 3696.3 Inorganic Chemicals for Industrial Use - Preparations of Standard
and Reagent Solutions for Chemical Analysis - Part 3: Preparation of Reagent
Solutions
JJG 119-2005 Verification Regulation of Laboratory pH Meters
Provisions on the Administration of the Road Transport of Dangerous Goods
Rule for the Waterway Transport of Dangerous Goods
Provisions on Supervision and Administration of Transport Safety of Railway
Dangerous Goods
Interim Provisions on the Administration of Transport of Railway Dangerous Goods
3 Molecular Formula and Relative Molecular Mass
Molecular formula: KClO4
Relative molecular mass: 138.55 (according to 2016 international relative atomic mass)
4 Classification
Potassium perchlorate for Industrial use is divided into Type-I and Type-II; and its main
uses are as follows:
---Type-I products are mainly used for meteorological rocket propulsion, oxidants,
6.3.4.1 Preparation of test solution
Take about 1g pre-ground powder sample, accurate to 0.0002g. Place it in a nickel
crucible; add 6g of sodium nitrite ground into powder; and mix thoroughly. Cover it; put
in a high-temperature furnace; gradually raise the temperature to 500°C; melt at this
temperature for 1.5 h. Cool off; dissolve the melt by hot water and wash into the beaker.
Cool off and transfer all to a 250 mL (V1) volumetric flask; dilute to the mark by water;
and shake well.
6.3.4.2 Test
Pipette 50 mL (V2) of test solution into a 500mL conical flask; add 50mL of silver nitrate
standard titration solution and 15mL of nitric acid solution by a pipette; and heat to all
nitrogen dioxide gas escape. Cool off, add 5mL of nitrobenzene; and shake for 30s.
Add 5mL of ferric ammonium sulfate indicator solution and use potassium thiocyanate
standard titration solution to titrate until the solution appears red. Do a blank test at the
same time.
6.3.5 Test data processing
The content of potassium perchlorate is calculated by the mass fraction w1 of
potassium perchlorate (KCIO4), and is calculated according to Formula (1):
Where:
V0 - the volume of potassium thiocyanate standard titration solution consumed by
titration of blank solution, in mL;
V - the volume of potassium thiocyanate standard titration solution consumed by
titration of test solution, in mL;
c - Accurate value of the concentration of potassium thiocyanate standard titration
solution, in mol/L;
M - The value of the molar mass of potassium perchlorate (KClO4), in (g/mol)
(M=138.6);
m – value of mass of the sample, in g;
V1 – value of volume of test solution in 6.3.4.1, in mL;
V2 – value of volume of the transferred test solution in 6.3.4.2, in mL;
6.5 Determination of chloride content
6.5.1 Principle
According to Clause 3 of GB/T 3051-2000.
6.5.2 Reagents and materials
According to Clause 4 of GB/T 3051-2000.
6.5.3 Test procedures
Take about 10g of sample, accurate to 0.01g. Place it in a 250mL conical flask; add
100mL of water; and heat until the sample is completely dissolved. Cool off, add 2~3
drops of bromophenol blue indicator solution; titrate the nitric acid solution (1mol/L)
until it is just yellow, and then add 2~3 drops in excess. Add 1mL of phenylazoformic
acid 2-phenylhydrazide indicator solution; and titrate by mercury
nitrate standard titration solution until the solution turns from yellow to purple. Do a
blank test at the same time. The treatment of mercury-containing waste liquid shall be
carried out in accordance with Appendix D in GB/T 3051-2000.
6.5.4 Test data processing
The chloride content is calculated by the mass fraction w3 of potassium chloride (KCl),
and is calculated according to Formula (3):
Where:
V – value of volume of mercury nitrate standard titration solution consumed by titration
of test solution, in mL;
V0 – value of volume of mercury nitrate standard titration solution consumed by titration
of blank solution, in mL;
c – accurate value of the concentration of mercury nitrate standard titration solution, in
mol/L;
M – value of mole mass of chloride (by KCl), in (g/mol) (M=74.55);
m – value of mass of the sample, in g.
The arithmetic mean of the parallel determination results is taken as the determination
0.2mL, the adding amount of ferrous ammonium sulfate standard titration solution shall
be appropriately increased (accurately add by a...