GB/T 6009-2014 PDF English
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| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivery | Name of Chinese Standard | Status |
| GB/T 6009-2014 | English | 105 |
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Anhydrous sodium sulfate for industrial use
| Valid |
| GB/T 6009-2003 | English | 359 |
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Anhydrous sodium sulfate for industrial use
| Obsolete |
| GB/T 6009-1992 | English | 439 |
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Anhydrous sodium sulphate for industrial use
| Obsolete |
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GB/T 6009-2014: Anhydrous sodium sulfate for industrial use---This is an excerpt. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.), auto-downloaded/delivered in 9 seconds, can be purchased online: https://www.ChineseStandard.net/PDF.aspx/GBT6009-2014
NATIONAL STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
ICS 71.060.50
G 12
Replacing GB/T 6009-2003
Anhydrous sodium sulfate for industrial use
Issued on. JULY 08, 2014
Implemented on. DECEMBER 01, 2014
Issued by. General Administration of Quality Supervision, Inspection and
Quarantine of PRC;
Standardization Administration of PRC.
Table of Contents
Foreword... 3
1 Scope... 4
2 Normative references... 4
3 Molecular formula and relative molecular mass... 5
4 Classification... 5
5 Requirements... 5
6 Test methods... 6
7 Inspection rules... 22
8 Markings and labels... 23
9 Packaging, transportation, storage... 23
Foreword
This standard was drafted in accordance with the rules given in GB/T 1.1-2009.
This standard replaces GB/T 6009-2003 "Anhydrous sodium sulfate for
industrial use". As compared with GB/T 6009-2003, in addition to editorial
changes, the main technical changes are as follows.
- ADJUST the technical requirements of the product to improve the
requirements of category-I superior products; ADD the pH requirement of
the aqueous solution of product (50 g/L) (see 5.2; 4.2 of the 2003 edition);
- In the determination method of calcium and magnesium content, ADD the
atomic absorption method (see 6.5; 5.5 of the 2003 edition);
- In the determination of chloride content, ADD the silver amount method
(see 6.6; 5.6 of the 2003 edition);
- ADD the determination method of pH (see 6.10).
This standard was proposed by the China Petroleum and Chemical Industry
Federation.
This standard shall be under the jurisdiction of the Inorganic Chemical Branch
of the National Chemical Standardization Technical Committee (SAC/TC 63/SC
1).
Drafting organizations of this standard. Hunan Hengyang Xinyi Chemical Co.,
Ltd., CNOOC Tianjin Chemical Research and Design Institute, Nanfeng
Chemical Group Co., Ltd., Sichuan Chuanmei Mirabilite Co., Ltd., Sichuan
Hongyaqing Yijiang Yuanming Powder Co., Ltd., Tongbai Star Chemical Co.,
Ltd., Hechang (Pengshan) Chemical Co., Ltd., Jiangsu Yinzhu Chemical Group
Co., Ltd., National Salt Chemical Product Quality Supervision and Inspection
Center (Jiangsu).
The main drafters of this standard. Liu Jian, Lu Siwei, Chen Aibing, Zou
Huarong, Huang Guifang, Wu Guoyu, Zhou Zhaogang, Wang Yigui, Chen
Changyi.
This standard replaces the standard previously issued as follows.
- GB 6009-1985, GB/T 6009-1992, GB/T 6009-2003.
Anhydrous sodium sulfate for industrial use
1 Scope
This standard specifies the classification, requirements, test methods,
inspection rules, marking, labeling, packaging, transportation, storage of
anhydrous sodium sulfate for industrial use.
This standard applies to anhydrous sodium sulfate for industrial use. This
product is mainly used as the industrial raw materials such as battery, optical
glass, printing-dyeing, synthetic detergent, vinylon, dye, ordinary glass, paper
industry, fiber production, inorganic salt, 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 standard.
GB/T 191-2008 Packaging - Pictorial marking for handling of goods
GB/T 3049-2006 Chemical products for industrial use - General method for
determination of iron content - 1 10-Phenanthroline spectrophotometric
method
GB/T 3051-2000 Inorganic chemical products for industrial use - General
method for determination of chloride content - Mercurimetric method
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 for rounding off for numerical values & expression and
judgement of limiting values
GB/T 23769-2009 Inorganic chemical products - General method for the
determination of pH values
3 Molecular formula and relative molecular mass Molecular formula. Na2SO4.
Relative molecular mass. 142.02 (according to 2011 international relative
atomic mass).
4 Classification
According to the use of anhydrous sodium sulfate for industrial use, it is divided
into three categories.
5 Requirements
5.1 Appearance. Anhydrous sodium sulfate for industrial use is white crystalline
particles.
5.2 Anhydrous sodium sulfate for industrial use shall meet the requirements of
Table 1.
6 Test methods
Warning. Some of the reagents used in this test method are toxic or
corrosive. The operator shall be careful! If splashed on the skin, rinse
immediately with water. In severe cases, treat immediately. When using
flammable products, it is strictly forbidden to use an open flame to heat
it.
6.2 Appearance inspection
The appearance is visually judged on a white-surface watch glass or a white
porcelain plate under natural light.
6.3 Determination of sodium sulfate content
6.3.1 Weight method (arbitration method)
6.3.1.5 Calculation of results
The sodium sulfate content is calculated based on the mass fraction w1 of
sodium sulfate (Na2SO4) through the formula (1).
6.3.2 Calculation method
6.3.2.1 Summary of method
The mass fractions of water insoluble, magnesium sulfate, sodium chloride, iron
sulfate, moisture, acidity or alkalinity are subtracted from 100 to obtain the
sodium sulfate content.
6.4 Determination of water insoluble content
6.4.1 Instruments
6.4.1.1 Glass mortar. The filter plate has a pore size of 5 μm ~ 15 μm.
6.4.1.2 Electrothermal constant temperature drying oven. The temperature can
be controlled at 105 °C ± 2 °C.
6.5 Determination of calcium and magnesium content
6.5.1 Atomic absorption method (arbitration method)
6.5.1.1 Summary of method
After the sample is dissolved, in a nitric acid medium, use the release agent
cesium chloride and the deionization agent cesium chloride to eliminate the
ionization interference. The calcium and magnesium ions are determined by a
flame atomic absorption spectrophotometer at wavelengths of 422.6 nm and
286.2 nm, respectively.
6.5.1.2 Reagents
6.5.1.2.1 Nitric acid solution. 1 + 9.
6.5.1.3 Instruments
Flame atomic absorption spectrophotometer. It is equipped with calcium and
magnesium cathode hollow lamps.
6.5.1.4 Analytical procedures
6.5.1.4.1 Preparation of test solution
Weigh a certain amount of specimen (about 10 g for category-I superior
products; about 1 g for category-II products; about 0.5 g for category-III
products; about 0.3 g for category-III products), accurate to 0.01 g. Place it in a
250 mL beaker. Add 50 mL of water and 20 mL of nitric acid solution. Heat to
dissolve it. Continue boiling it for 5 min. After cooling it, transfer it all into a 500
mL (V1) volumetric flask. Use water to dilute it to the mark. Shake it uniformly.
Dry filter it. Prepare for use.
6.6.2 Silver quantity method
6.6.2.1 Summary of method
The chloride ions in the test solution are titrated by a silver nitrate standard
titration solution under neutral or slightly alkaline conditions by the use of
potassium chromate as an indicator.
6.6.2.2 Reagents
6.6.2.3 Instruments and equipment
Micro-burette. The index value is 0.01 mL or 0.02 mL.
6.6.2.4 Analytical procedures
Pipette 25 mL (V2) of test solution A (see 6.4.2). Place it in a 250 mL conical
flask. Add water to about 100 mL. Add 0.5 mL of potassium chromate solution.
Use the standard titration solution of silver nitrate to titrate it, until the solution
forms a brick-red suspension that does not disappear, which is the end point.
6.7 Determination of iron content
6.7.1 Summary of method
Same as Chapter 3 of GB/T 3049-2006.
6.7.2 Reagents
6.7.2.1 Hydrochloric acid.
6.7.2.2 Ammonia solution. 1 + 1.
Others are the same as Chapter 4 of GB/T 3049-2006.
6.7.3 Instruments and equipment
Spectrophotometer. Equipped with cuvettes which have a thicknesses of 2 cm
and 5 cm.
6.7.4 Drawing of working curve
According to the provisions of 6.3 of GB/T 3049-2006, use 2 cm and 5 cm
cuvettes and the corresponding iron standard solution to draw the working
curve, respectively.
6.7.5 Analytical procedures
7 Inspection rules
7.1 Inspection shall be carried out by type inspection and exit-factory inspection.
7.2 The anhydrous sodium sulfate for industrial use of the same specification
produced by the same material continuously or by the same shift forms a batch.
Each batch of products does not exceed 1000 t.
7.3 Determine the number of sampling units according to the provisions of GB/T
6678.When sampling, insert the sampler from the top of the package to 3/4 of
the depth of the material layer.
7.4 If any indicators of the test results do not meet the requirements of this
standard, it take sample from double quantity of packages for reinspection.
Even if there is one indicator fails to meet the requirements of this standard
during the reinspection, the whole batch of products is unqualified.
7.5 Use the rounding-off comparison method as specified in GB/T 8170 to
determine whether the test results meet the standards.
8 Markings and labels
8.1 The packaging bags of anhydrous sodium sulphate for industrial use shall
have a firm and clear marking, which indicates the manufacturer's name, site,
product name, category, grade, net content, batch number or production date,
this standard number, the “Avoid rain exposure” sign as specified in GB/T 191-
2008.
9 Packaging, transportation, storage
9.1 Anhydrous sodium sulfate for industrial use is packed in polyethylene plastic
bags which are covered with plastic woven bags; or otherwise packed by
laminated plastic woven bags and damp-proof composite paper bag. The inner
bag is heat sealed or tied; the outer bag shall be firmly stitched. The net content
of each bag is 25 kg, 50 kg, 100 kg, 400 kg, 1000 kg.
9.3 Anhydrous sodium sulfate for industrial use shall be stored in a cool dry
place to prevent rain and moisture.
......
Source: Above contents are excerpted from the full-copy PDF -- translated/reviewed by: www.ChineseStandard.net / Wayne Zheng et al.
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