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GB/T 8146-2022: Test methods for rosin
Status: Valid GB/T 8146: Evolution and historical versions
| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| GB/T 8146-2022 | English | 629 |
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Test methods for rosin
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GB/T 8146-2022
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| GB/T 8146-2003 | English | 125 |
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Test methods for rosin
| Obsolete |
GB/T 8146-2003
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| GB/T 8146-1987 | English | 239 |
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Test methods of rosin
| Obsolete |
GB/T 8146-1987
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PDF similar to GB/T 8146-2022
Basic data | Standard ID | GB/T 8146-2022 (GB/T8146-2022) | | Description (Translated English) | Test methods for rosin | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | B72 | | Classification of International Standard | 65.050 | | Word Count Estimation | 31,374 | | Date of Issue | 2022-10-14 | | Date of Implementation | 2023-05-01 | | Older Standard (superseded by this standard) | GB/T 8146-2003 | | Issuing agency(ies) | State Administration for Market Regulation, China National Standardization Administration | GB/T 8146-2022: Test methods for rosin---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.
Test methods for rosin
ICS 65.050
CCSB72
National Standards of People's Republic of China
Replacing GB/T 8146-2003
Rosin test method
Published on 2022-10-12
2023-05-01 Implementation
State Administration for Market Regulation
Released by the National Standardization Administration
directory
Preface III
1 Scope 1
2 Normative references 1
3 Terms and Definitions 1
4 Reagents and Materials 1
5 Instruments 2
6 Sample 7
7 Test procedure and results 7
8 Test report 13
Appendix A (Normative) Judgment of Crystallization Phenomenon and Qualitative Method of Sulfur Content 15
Appendix B (normative) Rosin Product Rovibond Colorimetric Operation Regulations 16
Appendix C (informative) Masson pine rosin phase chromatogram and data 17
Appendix D (informative) Chromatogram and data of pine rosin and rosin 19
Appendix E (informative) Chromatogram and data of Simao pine and rosin 21
Appendix F (informative) Chromatogram and data of South Asian pine and rosin 23
foreword
This document is in accordance with the provisions of GB/T 1.1-2020 "Guidelines for Standardization Work Part 1.Structure and Drafting Rules of Standardization Documents"
drafted.
This document replaces GB/T 8146-2003 "Rosin Test Methods". Compared with GB/T 8146-2003, except for structural adjustment and editorial
In addition to the changes, the main technical changes are as follows.
--- Added "Color Determination (Ghana Colorimetric Method)", "Color Determination (Platinum-Cobalt Colorimetric Method)", "Automatic Instrument Method" in softening point determination and
"Determination of chemical composition" (see 7.3, 7.4, 7.5.3.2, 7.10);
--- The determination of ash content is changed from "multiple constant weights" to "one weighing" (see 7.9.1, 8.3.3 of the.2003 edition);
--- Increase the Rosin product Rovibond colorimetric operation procedures (see Appendix B).
Please note that some content of this document may be patented. The issuing agency of this document assumes no responsibility for identifying patents.
This document is proposed by the State Forestry and Grassland Administration.
This document is under the jurisdiction of the National Standardization Technical Committee of Forest Chemical Products (SAC/TC558).
This document is drafted by. Forest Products Chemical Industry Research Institute, Chinese Academy of Forestry, Simao District, Pu'er City Sensheng Forestry Co., Ltd.
Company, Guangxi Wuzhou Richeng Forestry Chemical Co., Ltd., Xinzhou (Wuping) Forestry Chemical Co., Ltd., Guangzhou Jingjiu Technical Consulting Service Co., Ltd.,
Jiangxi Feishang Forest Products Co., Ltd., Guangdong Hualin Chemical Co., Ltd., and Jiangsu Bohui Paper Co., Ltd.
The main drafters of this document. Wang Jing, Gao Hong, Zhao Zhendong, Chen Yuxiang, Bi Liangwu, Gu Yan, Li Haibing, Hou Wenbiao, Liu Fulin, Wan Li, Lu Ruiyao,
Zhu Jun and Liu Jichun.
The previous versions of this document and its superseded documents are as follows.
--- First published in 1987 as GB/T 8146-1987, first revised in.2003;
---This is the second revision.
Rosin test method
1 Scope
This document describes the appearance, color, softening point, acid value, unsaponifiable matter content, ethanol-insoluble matter content, ash content, chemical composition of rosin
Detection method.
This document is applicable to the inspection and testing of rosin products.
2 Normative references
The contents of the following documents constitute essential provisions of this document through normative references in the text. Among them, dated citations
documents, only the version corresponding to that date applies to this document; for undated references, the latest edition (including all amendments) applies to
this document.
Preparation of GB/T 601 Standard Titration Solutions for Chemical Reagents
Preparation of preparations and products used in GB/T 603 chemical reagent test methods
GB/T 1722-1992 Color determination method of varnishes, varnishes and thinners
GB/T 4507-2014 Asphalt softening point determination method ring and ball method
GB/T 6682 Analysis Laboratory Water Specifications and Test Methods
GB/T 8145 Gum Rosin
GB/T 9282.1-2008 Color evaluation of transparent liquids by platinum-cobalt grades - Part 1.Visual method
GB/T 9761-2008 Visual Colorimetry of Paints and Clearcoats
3 Terms and Definitions
There are no terms and definitions that need to be defined in this document.
4 Reagents and Materials
Unless otherwise specified, the reagents used in this document are all analytically pure reagents, and the water used conforms to the third-grade water regulations in GB/T 6682.
4.1 Iron-Cobalt Colorimeter Standard Color Level Solution
Prepared in accordance with the provisions of Appendix A in GB/T 1722-1992.
4.2 Platinum-cobalt colorimetric standard solution
Prepared in accordance with the provisions of Chapter 7 in GB/T 9282.1-2008.
4.3 Freshly boiled distilled water
Put about 800mL of distilled water in a beaker, heat it to boiling, and then cool it to below 35°C.
4.4 Carbon dioxide-free distilled water
Prepared according to the provisions of GB/T 603.
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