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GB/T 26008-2020 (GB/T26008-2020)

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GB/T 26008-2020: PDF in English (GBT 26008-2020)
GB/T 26008-2020
NATIONAL STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
ICS 77.150.99
H 64
Replacing GB/T 26008-2010
Battery Grade Lithium Hydroxide Monohydrate
ISSUED ON: JUNE 02, 2020
IMPLEMENTED ON: APRIL 01, 2021
Issued by: State Administration for Market Regulation;
Standardization Administration of PRC.
Table of Contents
Foreword ... 3
1 Scope ... 5
2 Normative References ... 5
3 Terms and Definitions ... 5
4 Technical Requirements ... 6
5 Test Methods ... 7
6 Inspection Rules ... 7
7 Marking, Packaging, Transportation, Storage and Quality Certificates ... 9
8 Order Form (or Contract) Contents ... 10
Appendix A (Normative) Determination of Boron Content in Battery-Grade
Lithium Hydroxide Monohydrate by Inductively Coupled Plasma Atomic
Emission Spectrometry ... 12
Appendix B (Normative) Determination of Magnetic Impurity Content in Battery-
Grade Lithium Hydroxide Monohydrate by Inductively Coupled Plasma Atomic
Emission Spectrometry ... 17
Battery Grade Lithium Hydroxide Monohydrate
1 Scope
This Standard specifies the technical requirements, test methods, inspection rules and
marking, packaging, transportation, storage, quality certificates and order forms (or
contracts) contents of battery grade lithium hydroxide monohydrate.
This standard is applicable to battery grade lithium hydroxide monohydrate produced
by various methods.
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 6678 General Principles for Sampling Chemical Products
GB/T 11064 (all parts) Methods for Chemical Analysis of Lithium Carbonate,
Lithium Hydroxide Monohydrate and Lithium Chloride
GB/T 19077 Particle Size Analysis - Laser Diffraction Methods
3 Terms and Definitions
For the purpose of this document, the following terms and definitions apply.
3.1 Magnetic impurity
A substance that can be directly or indirectly absorbed by a ferromagnet.
NOTE: It mainly refers to the magnetic substances in the transition elements, such as iron,
chromium, nickel, zinc and their alloys. It refers to the combined amount of four elements of
iron, chromium, nickel and zinc in this Standard.
white powder with fluidity and without visible inclusions.
5 Test Methods
5.1 The chemical composition of the product shall be analyzed in accordance with the
provisions of GB/T 11064 and Appendix A.
5.2 The magnetic impurity of the product shall be analyzed in accordance with the
provisions of Appendix B.
5.3 The granularity of the product shall be analyzed in accordance with GB/T 19077.
5.4 The appearance quality of the product shall adopt the visual inspection method.
6 Inspection Rules
6.1 Inspection and acceptance
6.1.1 The product shall be inspected by the supplier to ensure that the product quality
meets the requirements of this Standard and the order form (or contract); and fill in the
quality certificate.
6.1.2 The purchaser shall inspect the received products in accordance with the
provisions of this Standard. If the inspection results are inconsistent with the provisions
of this Standard and the order form (or contract), they shall submit to the supplier in
written form, which shall be resolved through consultation between the supplier and
the purchaser. Objections pertaining to appearance quality shall be submitted within
one month from the date of receipt of the product; objections pertaining to other
properties shall be submitted within three months from the date of receipt of the product.
If arbitration is required, it shall be negotiated by both parties.
6.2 Batching
Products shall be submitted for acceptance in batches; and each batch of products
shall consist of the same designation and the same mixture. The net weight of each
batch of products shall not exceed 10t. When supplied in large-batch, the method of
batching may be determined through consultation between the supplier and the
purchaser.
6.3 Inspection items
Each batch of products shall be inspected for chemical composition, magnetic impurity,
granularity, and appearance quality. The inspection items shall conform to the
provisions of Table 3.
6.5 Determination of inspection results
6.5.1 If the inspection results of chemical composition, magnetic impurity, and
granularity of the product are unqualified, double the number of samples from this
batch of products shall be taken to repeat the inspection for the unqualified items. If
the repeated inspection results are all qualified, the entire batch of products shall be
qualified. If there are still unqualified samples in the repeated inspection results, this
batch of products is determined to be unqualified.
6.5.2 If the appearance quality of the product is unqualified, this batch of products is
determined to be unqualified.
7 Marking, Packaging, Transportation, Storage and
Quality Certificates
7.1 Marking
The product shall indicate:
a) Product name;
b) Batch number;
c) Net weight;
d) Designation;
e) Appearance;
f) Name of the supplier;
g) Number of this Standard;
h) Place of origin;
i) “Corrosive substance” mark in Table 2 of GB 190-2009;
j) "Fear of rain" mark in Table 1 of GB/T 191-2008;
k) Production license number for Industrial product.
7.2 Packaging
7.2.1 Crystal type product of battery grade lithium hydroxide monohydrate is packed
by bags internally lined polyethylene (PE); externally cover the polypropylene (PP)
bags or two to three-layer paper bags. The internal bag is tied or heat-sealed; and the
Appendix A
(Normative)
Determination of Boron Content in Battery-Grade Lithium
Hydroxide Monohydrate by Inductively Coupled Plasma Atomic
Emission Spectrometry
Warning -- Persons using this appendix shall have practical working experience
in formal laboratory. This appendix 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 prescribed by the relevant national
regulations.
A.1 Scope
This appendix specifies the determination method of boron content in battery grade
lithium hydroxide monohydrate.
This appendix is applicable to the determination of boron content in battery grade
lithium hydroxide monohydrate. The measuring range is boron content of
0.00005%~0.010%.
A.2 Principle
Lithium hydroxide monohydrate is dissolved by hydrochloric acid; and the content of
boron was determined on an inductively coupled plasma atomic emission
spectrometer using a standard working curve method.
A.3 Reagents and materials
Unless otherwise stated, only those reagents confirmed to be of guaranteed reagent
and ultrapure water with a resistivity of 18.25 MΩ • cm are used in the analysis. Avoid
using boron-containing vessels during the test.
A.3.1 Hydrochloric acid (ρ=1.19 g/mL).
A.3.2 Hydrochloric acid (1+1).
A.3.3 Boric acid (99.99%), spectroscopically pure. Vacuum dry at 60°C for 2h and
place in a desiccator to cool off to room temperature.
A.3.4 Boron standard stock solution: take 5.7179g of boric acid (A.3.3) in a 200mL
polytetrafluoroethylene beaker; add 50 mL of water to dissolve completely. Transfer to
a 1000mL volumetric flask; add water to 900mL; add 20 mL of hydrochloric acid (A.3.2);
dilute to the mark by water; shake well; and transfer to a plastic bottle for storage. 1mL
of this solution contains 1mg of boron.
A.3.5 Boron standard solution A: pipette 20.00mL of the boron standard stock solution
(A.3.4) into a 200mL volumetric flask; add 4mL of hydrochloric acid (A.3.2); dilute to
the mark with water; shake well; and transfer to plastic bottle for storage. 1mL of this
solution contains 100µg boron.
A.3.6 Boron standard solution B: pipette 10.00mL of boron standard solution A (A.3.5)
into a 100mL volumetric flask; add 2 mL of hydrochloric acid (A.3.2); dilute to the mark
with water; shake well; and transfer to plastic bottle for store. 1mL of this solution
contains 10µg boron.
A.3.7 Argon gas (ωAr≥99.996%).
A.4 Apparatus
Inductively coupled plasma atomic emission spectrometer.
A.5 Sample
Take the dried, non-agglomerated battery-grade lithium hydroxide monohydrate
sample and place it in a desiccator to store for testing.
A.6 Test procedures
A.6.1 Parallel test
Do two tests in parallel.
A.6.2 Blank test
Do blank test with the sample.
A.6.3 Preparation of test solution
A.6.3.1 When the boron content in the specimen is no more than 0.0008%, take 5g of
sample (A.5), accurate to 0.0001g; put it in a 200mL polytetrafluoroethylene beaker;
add 20mL of water; add 20.0 mL of hydrochloric acid (A.3.2); shake gently to dissolve
the material completely; transfer to a 100mL plastic volumetric flask; add 6.0mL of
hydrochloric acid (A.3.2); and make constant volume.
A.6.3.2 When the boron content in the specimen is greater than 0.0008%, take 5g of
sample (A.5), accurate to 0.0001g; place in a 200 mL polytetrafluoroethylene beaker;
add 20mL of water; and add 20.0 mL of hydrochloric acid (A.3.2); shake gently to
dissolve the material completely; transfer to a 100 mL plastic volumetric flask;
respectively take the test solution into a 100 mL plastic volumetric flask according to
Appendix B
(Normative)
Determination of Magnetic Impurity Content in Battery-Grade
Lithium Hydroxide Monohydrate by Inductively Coupled Plasma
Atomic Emission Spectrometry
Warning -- Persons using this appendix shall have practical working experience
in formal laboratory. This appendix 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 prescribed by the relevant national
regulations.
B.1 Scope
This appendix specifies the determination method of magnetic impurity content in
battery grade lithium hydroxide monohydrate.
This appendix is applicable to the determination of the magnetic impurity content in
battery grade lithium hydroxide monohydrate. The determining range of magnetic
impurity content is 5.00 µg/kg ~ 1000.00 µg/ kg.
B.2 Principle
Lithium hydroxide is completely dissolved in water; and the magnetic impurity in the
enriched sample is absorbed by a magnetic rod; decompose by aqua regia; and the
content of magnetic impurity is determined on the inductively coupled plasma atomic
emission spectrometer using a standard working curve method.
B.3 Reagents and materials
Unless otherwise stated, only those reagents confirmed to be guaranteed reagent and
ultrapure water with a resistivity of 18.25 MΩ • cm are used in the analysis. All the
vessels used in the test were soaked in nitric acid (1+4), and then thoroughly washed
by ultrapure water.
B.3.1 Nitric acid (ρ=1.42 g/mL).
B.3.2 Hydrochloric acid (ρ=1.19 g/mL).
B.3.3 Nitric acid (1+1).
B.3.4 Aqua regia: mix with 1 volume of nitric acid (B.3.1) and 3 volumes of hydrochloric
acid (B.3.2), and prepare it when used.
B.6 Test procedures
B.6.1 Parallel test
Do two tests in parallel.
B.6.2 Blank test
Do blank test with the sample.
B.6.3 Preparation of test solution
B.6.3.1 Take 300 g of sample (B.5), accurate to 0.1g; place the sample in a 3000 mL
plastic bottle; add 2400 mL of water; put in a magnetic rod (B.4.2); and cover the lid;
place it on the rod mill (B.4.3); start the rod mill; and adsorb for 15 min at the speed of
60 r/min (by bottle).
B.6.3.2 After stopping the rotation, take out the magnetic rod; transfer it to a 250 mL
high-foot beaker; rinse for 3 times by ultrapure water (may be sucked on the bottom
by another magnetic rod); and try to discharge the remained water completely each
time.
B.6.3.3 Add 130 mL of water and 8 mL of aqua regia (B.3.4) to completely submerge
the magnetic rod in the acid solution; place it on an electric heating plate and boil it;
then keep it in boiling state for 30 min; and control the remaining liquid volume to be
30mL ~ 40mL. Take off, cool to room temperature; transfer to a 100 mL volumetric flask;
and make the constant volume.
B.6.3.4 When the content of magnetic impurity in the sample is greater than 200 µg/kg,
respectively take 20 mL of the test solution to be tested (B.6.3.3) into 100 mL volumetric
flask and add 6 mL of aqua regia (B.3.4); and make the constant volume.
B.6.4 Preparation of working curve solution
In 6 pieces of 100 mL volumetric flasks, respectively add 0 mL, 0.20 mL, 0.50 mL, 1.00
mL, 2.00 mL, 5.00 mL of mixed standard solution B (B.3.10); and add 8 mL of aqua
regia (B.3.4); and make constant volume by water. The mass concentration of each
element standard solution is shown in Table B.1.
Table B.1 – Mass Concentrations of Various Element Standard Solutions
B.6.5 Determination
B.6.5.1 The standard working curve series solution (A.6.4) is determined on the
Mass concentration of each element /
(µg/mL)
Standard working curve series
......
 
(Above excerpt was released on 2020-06-28, modified on 2021-06-07, translated/reviewed by: Wayne Zheng et al.)
Source: https://www.chinesestandard.net/PDF.aspx/GBT26008-2020