GB/T 22661.2-2008Chemical analysis methods of potassium fluoborade - Part 2: Determination of moisture content - By gravimetric method (English PDF)
氟硼酸钾化学分析方法 第2部分：湿存水含量的测定 重量法
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Issued by
SAMR; SAC
Level / Type
National · Recommended
Issue date
December 29, 2008
Implementation date
November 1, 2009
Scope
GB/T 22661.2-2008 is the English-translated version of 氟硼酸钾化学分析方法 第2部分：湿存水含量的测定 重量法.
GB/T 22661.2-2008 is the Chinese standard "Chemical analysis methods of potassium fluoborade - Part 2: Determination of moisture content - By gravimetric method".
Its scope clause reads: This section GB/T 22661 specifies the method for determination of potassium fluoroborate hygroscopic water. This section applies to the determination of potassium fluoroborate hygroscopic water.
Measuring range. <=0.5%. Its clauses include method summary; instrument; sample.
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Document preview — GB/T 22661.2-2008
National Standard of the People's Republic of China
- ICS
- 77.120.10
- Classification
- H 61
Issued by: State Administration for Market Regulation; Standardization Administration of the PRC
Contents
- 1 Scope
- 2 Normative references
- 3 Method summary
- 4 Instrument
- 5 Sample
1 Scope
This section GB/T 22661 specifies the method for determination of potassium fluoroborate hygroscopic water.
This section applies to the determination of potassium fluoroborate hygroscopic water. Measuring range. <=0.5%.
2 Normative references
The following documents contain provisions which, through reference GB/T 22661 in this section constitute provisions of this section. For dated reference documents
Member, all subsequent amendments (not including errata content) or revisions do not apply to this section, however, encouraged to reach under this section
Parties to research agreement to use the latest versions of these documents. For undated reference documents, the latest versions apply to this section.
GB/T 22661.1-2008 Chemical analysis methods of potassium fluoroborate Part 1. Preparation and storage of test samples
3 Method summary
The sample was dried at 110 °C and measuring the amount of loss.
4 Instrument
4.1 weighing bottle
diameter 45mm, flat type.
4.2 electric oven
the temperature can be controlled at 110 °C ± 5 °C.
5 Sample
The specimen shall comply with GB/T 22661.1-2008 in 3.2 requirements.
Step 6 Analysis
6.1 Sample
Weigh 2.5g of the original sample (5), to the nearest 0.001g, denoted m1 0.
6.2
Determination of the number of
Independent of the two measurements, the mean value.
6.3 Determination
6.3.1
advance at 110 °C ± 5 °C in an electric oven (4.2) in the drying 2h, and cooled in a desiccator sample (6.1) into the weighing bottle (4.1), the lid was weighed (accurate to 0.001g), referred to as m1 2.
6.3.2
Place the sample weighing bottle (6.3.1) where the temperature was adjusted to 110 °C ± 5 °C in an electric oven, the lid of the bottle rack on top do not cover strict. At the same time placed in an oven with a diameter slightly larger than the weighing bottle table dish, bake 2h, remove the cap put on the table dish, and place all dry
Dry vessel. After cooling, remove the sheet pan, cap tightly, and weighed (accurate to 0.001g), referred to as m1.
7. Calculation of analytical results
According to formula (1) to calculate the mass fraction of water in the wet (%).
(Moisture intrudes) m1 m1 = m1 2- 0 ×
100 (1) […]
......
This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 15 pages — is available in the English PDF.
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Related Standards
GB/T 22661.3-2008 — Chemical analysis methods of potassium fluoborade - Part 3: Determination of potassium fluoborade content - Distillation-sodium hydrogen oxidizes titration volumetric method
GB/T 22661.1-2008 — Chemical analysis methods of potassium fluoborade - Part 1: preparation and storage of test samples
GB/T 22661.4-2008 — Chemical analysis methods of potassium fluoborade - Part 4: Determiantion of magnesium content - Flame atomic absorption spectrometric method
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