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SN/T 2427-2010: Determination of melting temperature and melting temperature range of chemicals for import and export by differential scanning calorimetry
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| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| SN/T 2427-2010 | English | 209 |
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Determination of melting temperature and melting temperature range of chemicals for import and export by differential scanning calorimetry
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SN/T 2427-2010
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Basic data | Standard ID | SN/T 2427-2010 (SN/T2427-2010) | | Description (Translated English) | Determination of melting temperature and melting temperature range of chemicals for import and export by differential scanning calorimetry | | Sector / Industry | Commodity Inspection Standard (Recommended) | | Classification of Chinese Standard | G04 | | Classification of International Standard | 71.100.01 | | Word Count Estimation | 8,856 | | Date of Issue | 2010-03-02 | | Date of Implementation | 2010-09-16 | | Quoted Standard | GB/T 6425; GB/T 19466.3; JJG 936 | | Regulation (derived from) | National Quality Inspection (2010) 98; industry standard filing Notice 2010 No. 5 (No. 125 overall) | | Issuing agency(ies) | General Administration of Customs | | Summary | This standard specifies the differential scanning calorimetry melting temperature and the import and export of chemicals melting temperature range approach. This standard applies to solid-liquid phase transition has obvious thermal effect of the chemical melting temperature and melting temperature range of measurement. This standard does not apply to the decomposition temperature lower than the melting temperature lower than the melting temperature of the material and explosives. | SN/T 2427-2010: Determination of melting temperature and melting temperature range of chemicals for import and export by differential scanning calorimetry
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Determination of melting temperature and melting temperature range of chemicals for import and export by differential scanning calorimetry
Exit inspection and quarantine industry standard book People's Republic of China
Import and export of chemicals and melting temperature
Determination of melting temperature range of differential scanning calorimetry
Issued on. 2010-03-02
2010-09-16 implementation
People's Republic of China
The State Administration of Quality Supervision, Inspection and Quarantine released
Foreword
Appendix A of this standard is an informative annex.
This standard is proposed and managed by the National Certification and Accreditation Administration Committee.
This standard was drafted. People's Republic of China Guangdong CIQ, Sun Yat-sen.
The main drafters of this standard. Chen Gufeng, Fang Yongkang, Lee Jun, Chen Qiang, Lin Hongxiong, Zhang Yi, Di Cuiping, Zheng Jianguo.
This standard is the first release of the entry-exit inspection and quarantine industry standards.
Import and export of chemicals and melting temperature
Determination of melting temperature range of differential scanning calorimetry
Warning --- When using this standard may involve hazardous materials, operations and equipment. This standard does not cover all associated with use
Solutions to security problems. The standard measure of the responsibility of the user prior to use to ensure the safety of the appropriate provisions of these rules and to determine
System suitability chapter.
1 Scope
This standard specifies a differential scanning calorimetry melting temperature determination of the import and export of chemicals and melting temperature range of the method.
This standard applies to solid-liquid phase transition temperature and melting chemicals measured melting temperature range has obvious thermal effects.
This standard does not apply to the decomposition temperature below the melting temperature of the material and explosives.
2 Normative references
The following documents contain provisions which, through reference in this standard and become the standard terms. For dated references, subsequent
Amendments (not including errata content) or revisions do not apply to this standard, however, encourage the parties to the agreement are based on research
Whether the latest versions of these documents. For undated reference documents, the latest versions apply to this standard.
GB/T 6425 Thermal Analysis term
GB/T 19466.3 plastic differential scanning calorimetry - Part 3. Determination of melting and crystallization temperature and enthalpy
(GB/T 19466.3-2004, ISO 11357-3.1999, IDT)
JJG936 a differential scanning calorimeter
3 Terms and Definitions
GB/T 6425 and established the following terms and definitions apply to this standard.
3.1
Under the program temperature and a certain atmosphere, measuring the sample and reference material lost heat flow rate or heating power (difference) versus temperature or time
Technology.
3.2
By a differential scanning calorimeter measured sample and reference was lost heat flow rate or heating power (difference) versus temperature or time curve
Icon. Ordinate of the graph for the heat flow rate (heatflowrate) or said heat flow (heatflow), the unit is mW (mJ · s-1); abscissa
Labeled as temperature or time, unit ℃ or t. General customary provisions, upward curve is positive, indicating that the exothermic effect; down is negative, showing an endothermic
effect.
3.3
In the procedure specified in this standard, a set of characteristic temperature determined by the measured DSC curve (usually extrapolated melting temperature or the starting point
Melting peak temperature), the temperature of the material used to represent the transition from a solid state to a different viscosity liquid state.
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