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GB/T 35924-2018 English PDF (GB/T35924-2018)

GB/T 35924-2018 English PDF (GB/T35924-2018)

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GB/T 35924-2018: Determination of moisture in solid chemical products -- Thermogravimetry method
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GB/T 35924-2018
GB
NATIONAL STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
ICS 71.040.01
G 04
Determination of Moisture in Solid Chemical Products
– Thermogravimetry Method
ISSUED ON. FEBRUARY 06, 2018
IMPLEMENTED ON. SEPTEMBER 01, 2018
Issued by. General Administration of Quality Supervision, Inspection and
Quarantine;
Standardization Administration of PRC.
Table of Contents
Foreword ... 3
1 Scope ... 4
2 Normative References ... 4
3 Principle ... 4
4 Apparatus and reagents ... 4
5 Analytical Procedures ... 5
6 Result Analysis and Treatment ... 5
7 Precision ... 6
Determination of Moisture in Solid Chemical Products
– Thermogravimetry Method
1 Scope
This Standard specifies using the thermogravimetric analysis method to determine the
moisture content in the solid chemical products.
This Standard is applicable to determine the moisture content in the solid chemical
products with moisture content range from 0.050% to 28.00%.
This Standard is not applicable to the determination of chemical products that shall be
weathered, deliquesced, volatized at the room temperature; or the determination of
chemical products with decomposition temperature less than 105°C. For some
samples, the moisture content may contain a quantity of volatiles at 105°C below.
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/T 27761 Standard Test Method of Mass Loss and Residue Measurement Validation
of Thermogravimetric Analyzers
3 Principle
The sample is heated in a thermogravimetric analyzer, and the moisture content in the
sample is automatically determined based on the thermogravimetric curve.
4 Apparatus and reagents
4.1 Thermogravimetric analyzer, conforming to the thermal analyzer specified in GB/T
27761 with a built-in balance sensitivity of 0.001mg.
4.2 Crucible, select the crucible that does not react with the sample according to the
GB/T 35924-2018
GB
NATIONAL STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
ICS 71.040.01
G 04
Determination of Moisture in Solid Chemical Products
– Thermogravimetry Method
ISSUED ON. FEBRUARY 06, 2018
IMPLEMENTED ON. SEPTEMBER 01, 2018
Issued by. General Administration of Quality Supervision, Inspection and
Quarantine;
Standardization Administration of PRC.
Table of Contents
Foreword ... 3
1 Scope ... 4
2 Normative References ... 4
3 Principle ... 4
4 Apparatus and reagents ... 4
5 Analytical Procedures ... 5
6 Result Analysis and Treatment ... 5
7 Precision ... 6
Determination of Moisture in Solid Chemical Products
– Thermogravimetry Method
1 Scope
This Standard specifies using the thermogravimetric analysis method to determine the
moisture content in the solid chemical products.
This Standard is applicable to determine the moisture content in the solid chemical
products with moisture content range from 0.050% to 28.00%.
This Standard is not applicable to the determination of chemical products that shall be
weathered, deliquesced, volatized at the room temperature; or the determination of
chemical products with decomposition temperature less than 105°C. For some
samples, the moisture content may contain a quantity of volatiles at 105°C below.
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/T 27761 Standard Test Method of Mass Loss and Residue Measurement Validation
of Thermogravimetric Analyzers
3 Principle
The sample is heated in a thermogravimetric analyzer, and the moisture content in the
sample is automatically determined based on the thermogravimetric curve.
4 Apparatus and reagents
4.1 Thermogravimetric analyzer, conforming to the thermal analyzer specified in GB/T
27761 with a built-in balance sensitivity of 0.001mg.
4.2 Crucible, select the crucible that does not react with the sample according to the

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