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GB/T 8146-2022 English PDF

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Q: Should I purchase the latest version GB/T 8146-2022?

Yes. Unless special scenarios such as technical constraints or academic study, you should always prioritize to purchase the latest version GB/T 8146-2022 even if the enforcement date is in future. Complying with the latest version means that, by default, it also complies with all the earlier versions, technically.

US$629.00 · In stock
Delivery: <= 5 days. True-PDF full-copy in English will be manually translated and delivered via email.
GB/T 8146-2022: Test methods for rosin
Status: Valid

GB/T 8146: Historical versions

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 8146-2022	629	Add to Cart	5 days	Test methods for rosin	Valid
GB/T 8146-2003	125	Add to Cart	Auto, < 3 mins	Test methods for rosin	Obsolete
GB/T 8146-1987	239	Add to Cart	2 days	Test methods of rosin	Obsolete

Similar standards

GB/T 24797.2 GB/T 8140 GB/T 18011 GB/T 8145 GB/T 8137

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Older Standard (superseded by this standard): GB/T 8146-2003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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Tips & Frequently Asked Questions:

Question 1: How long will the true-PDF of GB/T 8146-2022_English be delivered?

Answer: Upon your order, we will start to translate GB/T 8146-2022_English as soon as possible, and keep you informed of the progress. The lead time is typically 3 ~ 5 working days. The lengthier the document the longer the lead time.

Question 2: Can I share the purchased PDF of GB/T 8146-2022_English with my colleagues?

Answer: Yes. The purchased PDF of GB/T 8146-2022_English will be deemed to be sold to your employer/organization who actually pays for it, including your colleagues and your employer's intranet.

Question 3: Does the price include tax/VAT?

Answer: Yes. Our tax invoice, downloaded/delivered in 9 seconds, includes all tax/VAT and complies with 100+ countries' tax regulations (tax exempted in 100+ countries) -- See Avoidance of Double Taxation Agreements (DTAs): List of DTAs signed between Singapore and 100+ countries

Question 4: Do you accept my currency other than USD?

Answer: Yes. If you need your currency to be printed on the invoice, please write an email to Sales@ChineseStandard.net. In 2 working-hours, we will create a special link for you to pay in any currencies. Otherwise, follow the normal steps: Add to Cart -- Checkout -- Select your currency to pay.

Question 5: Should I purchase the latest version GB/T 8146-2022?

Answer: Yes. Unless special scenarios such as technical constraints or academic study, you should always prioritize to purchase the latest version GB/T 8146-2022 even if the enforcement date is in future. Complying with the latest version means that, by default, it also complies with all the earlier versions, technically.