GB/T 11064.3-2013 PDF in English
GB/T 11064.3-2013 (GB/T11064.3-2013, GBT 11064.3-2013, GBT11064.3-2013)
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Methods for chemical analysis of lithium carbonate, lithium hydroxide monohydrate and lithium chloride -- Part 3: Determination of lithium chloride content -- Potentiometric method
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| GB/T 11064.3-1989 | English | 199 |
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Lithium carbonate--Determination of lithium chloride content--Potentiometric method
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Standards related to (historical): GB/T 11064.3-2013
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GB/T 11064.3-2013: PDF in English (GBT 11064.3-2013) GB/T 11064.3-2013
GB
NATIONAL STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
ICS 77.120.99
H 64
Replacing GB/T 11064.3-1989
Methods for chemical analysis of lithium carbonate,
lithium hydroxide monohydrate and lithium chloride -
Part 3. Determination of lithium chloride content -
Potentiometric method
ISSUED ON. SEPTEMBER 06, 2013
IMPLEMENTED ON. MAY 01, 2014
Issued by.
General Administration of Quality Supervision, Inspection
and Quarantine of the People’s Republic of China;
Standardization Administration of the People’s Republic of
China.
Table of Contents
Foreword ... 3
1 Scope ... 5
2 Method summary ... 5
3 Reagents ... 5
4 Instruments ... 7
5 Samples ... 7
6 Analysis steps ... 7
7 Calculation of analysis results ... 8
8 Precision ... 9
9 Test report ... 9
Annex A ... 10
Foreword
GB/T 11064 “Methods for chemical analysis of lithium carbonate, lithium hydroxide
monohydrate and lithium chloride” is divided into 16 parts.
- Part 1. Determination of lithium carbonate content - Acid-alkali titrimetric method;
- Part 2. Determination of lithium hydroxide content - Acid-alkali titrimetric method;
- Part 3. Determination of lithium chloride content - Potentiometric method;
- Part 4. Determination of potassium and sodium content - Flame atomic
absorption spectrometric method;
- Part 5. Determination of calcium content - Flame atomic absorption spectrometric
method;
- Part 6. Determination of magnesium content - Flame atomic absorption
spectrometric method;
- Part 7. Determination of iron content - 1,10-phenanthroline spectrophotometric
method;
- Part 8. Determination of silicon content - Molybdenum blue spectrophotometric
method;
- Part 9. Determination of sulfate content - Barium sulfate nephelometry method;
- Part 10. Determination of chloride content - Silver chloride nephelometry method;
- Part 11. Determination of Acid-insolubles Content - Gravimetric method;
- Part 12. Determination of carbonate content - Determination of lithium chloride
content - Potentiometric method;
- Part 13. Determination of aluminum content - Chromazurol S-cetylpyridine
bromide spectrophotometric method;
- Part 14. Determination of arsenic content - Molybdenum blue spectrophotometric
method;
- Part 15. Determination of fluoride content - Ion selective method;
- Part 16. Determination of calcium, magnesium, copper, lead, zinc, nickel,
manganese, cadmium and aluminum content - Inductively coupled plasma
atomic emission spectrometry.
This Part is part 3 of GB/T 11064.
This Part is drafted in accordance with the rules given in GB/T 1.1-2009.
This Part replaces GB/T 11064.3-1989 “Methods for chemical analysis of lithium
carbonate, lithium hydroxide monohydrate and lithium chloride - Part 3. Determination
of lithium chloride content - Potentiometric method”.
Compared with GB/T 11064.3-1989, the main changes of this Part are following.
- ADD the repeatability terms;
- RE-EDIT the text format; ADD the test report.
This Part shall be under the jurisdiction of National Standardization Technical
Committee of Nonferrous Metals (SAC/TC 243).
Drafting organizations of this Part. Sichuan Tianqi Lithium Co., Ltd., Jiangxi Ganfeng
Lithium Co., Ltd., Xinjiang Institute of Nonferrous Metals, and Beijing General
Research Institute of Mining and Metallurgy.
Main drafters of this Part. Tu Mingjiang, Luo Yuping, Gou Haixia, Yi Qingyun, Zeng
Xianqin, Zhang Shaohui, and Jiang Qiutao.
The historical version replaced by this Part is as follows.
- GB/T 11064.3-1989.
Methods for chemical analysis of lithium carbonate,
lithium hydroxide monohydrate and lithium chloride -
Part 3. Determination of lithium chloride content -
Potentiometric method
1 Scope
This Part of GB/T 11064 specifies the determination method for lithium chloride
content in lithium chloride.
This Part applies to the determination of lithium chloride content in lithium chloride.
The determination range. more than 95.00%.
2 Method summary
The sample is dissolved in water. In acidic solution, use silver (or silver-silver sulfide)
electrode as measuring electrode; use calomel electrode as reference electrode; and
use silver nitrate standard solution to titrate chloride. Use secondary derivative to
determine the reaction end; use the consumed amount of silver nitrate standard
titration solution to calculate the content of lithium chloride.
3 Reagents
Unless otherwise indicated, all reagents used in this Part are analytical reagent, the
water used is deionized water.
3.1 Nitrate (1+1), guarantee reagent.
3.2 Bromophenol blue ethanol solution (1g/L).
3.3 Sodium chloride standard solution [c(NaCl) = 0.1000mol/L]. Weigh 5.8443g of
sodium chloride (reference reagent) which has been burned in advance at 450°C ~
500°C for 1.5h, and placed in the dryer to cool to room temperature. Place them in a
250mL beaker; add 50mL of water to dissolve; transfer to a 1000mL volumetric flask;
dilute with water to scale; mix well.
3.4 Silver nitrate standard titration solution [c(AgNO3) = 0.1000mol/L].
42.39 - The molar mass based on (LiCl) as the basic unit, in grams per mole
(g/mol);
The result shall be expressed to two decimal places.
8 Precision
8.1 Repeatability
For the two independent test results obtained under repeatability conditions, within the
average-value range as given below, the absolute difference of these two test results
does not exceed the repeatability limit (r), and the situation exceeding repeatability
limit (r) is not more than 5%. Repeatability limit (r), according to Table 1, adopts linear
interpolation to obtain.
Table 1
wLiCl/% 95.93 96.99 99.53
r/% 0.017 0.034 0.045
8.2 Allowable difference
The difference of analysis results among laboratories shall not be more than the
allowable difference in Table 2.
Table 2
Mass fraction of lithium chloride/% Allowable difference/%
>95.00 0.35
9 Test report
The test report shall contain the following content.
- Sample;
- The number of this Part national standard;
- Analysis result and its expression;
- Difference with the basic analysis step;
- Anomalies observed in the determination;
- Determination date.
Annex A
(Informative)
Example of test record format
Table A.1
The volume of silver nitrate
standard titration solution (3.4)
mL
mV
ΔE1
mV
ΔE2
mV
19.95 350
20.00 374 +25
20.05 423 -28
20.10 444 -7
20.15 458
......
Source: Above contents are excerpted from the PDF -- translated/reviewed by: www.chinesestandard.net / Wayne Zheng et al.
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