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GB/T 37175-2018: Coking carbazole
Status: Valid
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| GB/T 37175-2018 | English | 199 |
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Coking carbazole
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GB/T 37175-2018
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Basic data | Standard ID | GB/T 37175-2018 (GB/T37175-2018) | | Description (Translated English) | Coking carbazole | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | G16 | | Classification of International Standard | 71.080.15 | | Word Count Estimation | 10,151 | | Date of Issue | 2018-12-28 | | Date of Implementation | 2019-07-01 | | Issuing agency(ies) | State Administration for Market Regulation, China National Standardization Administration | GB/T 37175-2018: Coking carbazole---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
Coking carbazole
ICS 71.080.15
G16
National Standards of People's Republic of China
Coking carbazole
Published on.2018-12-28
2019-07-01 implementation
State market supervision and administration
China National Standardization Administration issued
Foreword
This standard was drafted in accordance with the rules given in GB/T 1.1-2009.
This standard was proposed by the China Iron and Steel Association.
This standard is under the jurisdiction of the National Coal Chemical Standardization Technical Committee (SAC/TC469).
This standard was drafted. Shanghai Baosteel Chemical Co., Ltd., Metallurgical Industry Information Standards Institute.
The main drafters of this standard. Li Qianyi, Chen Guomin, Li Jiafa, Chen Huiping, Zheng Jingwu.
Coking carbazole
1 Scope
This standard specifies the technical requirements, test methods, inspection rules, packaging, transportation, storage and quality certificates, safety attention of coking carbazole.
matter.
This standard is applicable to carbazole obtained by using eucalyptus oil in coal tar as raw material, separated by solvent and separated by crystallization.
2 Normative references
The following documents are indispensable for the application of this document. For dated references, only dated versions apply to this article.
Pieces. For undated references, the latest edition (including all amendments) applies to this document.
GB/T 2000 coking solid product sampling method
GB/T 8170 Numerical Rounding Rules and Representation and Determination of Limit Values
3 Technical requirements
The carbazole technical indicators should meet the requirements of Table 1.
Table 1 Technical indicators
Indicator name
index
First-class quality products
Appearance grayish white or slightly pink crystal
Carbazole content (mass fraction) /% Not less than 95.0 90.0
4 Test methods
4.1 Appearance. Visual inspection.
4.2 Determination of carbazole content is carried out in accordance with Appendix A.
5 Inspection rules
5.1 The inspection and acceptance of product quality shall be carried out by the quality supervision department.
5.2 For continuous production, the daily packaging quantity shall be one batch, and each batch shall not exceed.200t.
5.3 The sample preparation and preparation shall be carried out in accordance with the provisions of GB/T 2000.
5.4 The product quality index is qualified and judged, and the “repair value comparison method” in GB/T 8170 is adopted.
5.5 Technical requirements of this standard All items in Table 1 are factory inspection items. The results of the factory inspection items do not meet the requirements of this standard.
The requirement is to allow a retest of the batch of products. Re-inspection of unqualified items during re-inspection. Retest results even if there is only one indicator
If the technical requirements of this standard are not met, the whole batch of products is not qualified. The retest is only performed once.
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