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GB/T 12902-2026: Analytical methods for turpentine
Status: Valid
GB/T 12902: Evolution and historical versions
| Std ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status |
| GB/T 12902-2026 | English | 779 |
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Analytical methods for turpentine
| Valid |
| GB/T 12902-2006 | English | 369 |
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Analytical methods for turpentine
| Valid |
| GB/T 12902-1991 | English | 479 |
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Analytical methods of turpentine
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Basic data | Standard ID | GB/T 12902-2026 (GB/T12902-2026) | | Description (Translated English) | Analytical methods for turpentine | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | B72 | | Classification of International Standard | 65.050 | | Word Count Estimation | 38,337 | | Date of Issue | 2026-02-27 | | Date of Implementation | 2026-09-01 | | Older Standard (superseded by this standard) | GB/T 12902-2006, GB/T 33029-2016 | | Issuing agency(ies) | State Administration for Market Regulation, Standardization Administration of China | GB/T 12902-2026: Analytical methods for turpentine---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.
ICS 65.050
CCSB 72
National Standards of the People's Republic of China
Replaces GB/T 12902-2006 and GB/T 33029-2016
Turpentine analysis method
Published on 2026-02-27
Implemented on 2026-09-01
State Administration for Market Regulation
The State Administration for Standardization issued a statement.
Table of contents
Preface III
1.Scope 1
2 Normative References 1
3.Terms and Definitions 1
4.Reagents and Materials 1
5.Instruments and Equipment 2
6 samples 5
7.Experimental Procedures and Results 5.
8 Test Report 11
Appendix A (Informative) Gas Chromatogram and Data of Pine Turpentine Oil 12
Appendix B (Informative) Gas Chromatogram and Data of Pine Turpentine Oil from Simao 14
Appendix C (Informative) Gas Chromatograms and Data of Turpentine Oil from Slash Pine 16
Appendix D (Informative) Gas Chromatograms and Data of Turpentine Oil from Other Pine Species 18
Appendix E (Informative) Gas Chromatograms and Data of Heavy Turpentine Oil 28
Foreword
This document complies with the provisions of GB/T 1.1-2020 "Standardization Work Guidelines Part 1.Structure and Drafting Rules of Standardization Documents".
Drafting.
This document supersedes GB/T 12902-2006 "Analytical Methods for Turpentine Oil" and GB/T 33029-2016 "Turpentine Oil and Related Terpenes Products".
"Compositional Capillary Gas Chromatography Analysis Method". This document is based on GB/T 12902-2006 and integrates GB/T 33029-2016.
Content. Compared with GB/T 12902-2006, apart from structural adjustments and editorial changes, the main technical changes are as follows.
---The preparation method for the standard solution used in acid value determination has been changed (see 4.5, 4.6, and 10.2.2 of the.2006 edition);
---Added "Gascher colorimetry" (see 7.2.3);
---Added "Optical Rotation Measurement" (see 7.5);
---The number of parallel tests for the determination of turpentine component content has been changed from "three" to "two" (see 7.7.1.4,.2006 edition).
8.4.2);
---The accuracy requirement for turpentine component content results has been changed from "meeting given repeatability and reproducibility" to "two parallel tests".
The absolute difference of the test results should not exceed 0.3 (see 7.7.2.2, 8.5.3 of the.2006 edition);
--- An "automatic determination method" for determining "initial boiling point and distillate volume percentage" has been added (see 7.8.2).
Please note that some content in this document may involve patents. The issuing organization of this document assumes no responsibility for identifying patents.
This document was proposed by the National Forestry and Grassland Administration.
This document is under the jurisdiction of the National Technical Committee on Standardization of Forest Chemical Products (SAC/TC558).
This document was drafted by. Research Institute of Chemical Industry of Forest Products, Chinese Academy of Forestry; Wuzhou Huangpu Chemical Pharmaceutical Co., Ltd.; and Yunnan Forestry.
Yuan Fragrance Co., Ltd., Xiamen Zhongkun Chemical Co., Ltd., Fujian Nanping Qingsong Chemical Co., Ltd., and Guangxi Wuzhou Richeng Forest Products Chemical Co., Ltd.
Limited Liability Company, Huaiji County Changlin Chemical Co., Ltd., Puer City Simao District Sensheng Forestry Chemical Co., Ltd., Guangdong Xingguang Resin Technology Co., Ltd.
Limited Liability Company, Shaoguan Linhe Forest Products Technology Co., Ltd., Guangdong Weisida New Materials Co., Ltd., Guangzhou Jingjiu Technology Consulting Service Co., Ltd.
The main drafters of this document are. Wang Jing, Zhao Zhendong, Chen Yuxiang, Chen Suhua, Gu Yan, Bi Liangwu, Yang Hejian, Kong Lingshen, Zhang Chao, and Yan Yali.
Deng Xingu, Yang Bin, Zhu Qingbing, Li Haibing, Song Lifeng, Chen Yuanxin, Cai Dongming, Xie Yuxiang, Lin Qiuju.
The release history of this document and the document it replaces is as follows.
---First published in.1991 as GB/T 12902-1991, and revised for the first time in.2006;
---This is the second revision, which integrates the content of GB/T 33029-2016.
Turpentine analysis method
1 Scope
This document describes the appearance, color, relative density, refractive index, optical rotation, acid value, component content, initial boiling point, and distillation volume of turpentine oil.
Methods for detecting percentages.
This document applies to the inspection of turpentine products.
2 Normative references
The contents of the following documents, through normative references within the text, constitute essential provisions of this document. Dated citations are not included.
For references to documents, only the version corresponding to that date applies to this document; for undated references, the latest version (including all amendments) applies.
This document.
GB/T 601 Preparation of Standard Titration Solutions for Chemical Reagents
GB/T 4472 Determination of density and relative density of chemical products
GB/T 6488 Determination of refractive index of liquid chemical products
GB/T 6682 Specifications and test methods for water used in analytical laboratories
GB/T 9281.1-2008 Color Grading of Transparent Liquids – Part 1.Visual Method
GB/T 9282.1-2008 Color assessment of transparent liquids by platinum-cobalt grade - Part 1.Visual method
GB/T 9761 Paints and Varnishes - Visual Color Comparison of Paints
GB/T 12901 Turpentine Oil
GB/T 14454.5 Determination of optical rotation of fragrances
SH/T 0121 Technical conditions for apparatus for determining the distillation range of petroleum products
3 Terms and Definitions
The following terms and definitions apply to this document.
3.1
initial boiling point
The temperature at which the first drop of liquid drips from the bottom of the turpentine condenser at standard atmospheric pressure (101.3 kPa).
3.2
Under standard atmospheric pressure (101.3 kPa), when the distillation temperature of turpentine reaches 170°C, the volume of turpentine distilled out accounts for the proportion of the input sample.
Percentage of volume.
4.Reagents and Materials
Unless otherwise specified, all reagents used in this document are analytical grade reagents, and the water used meets the requirements for Grade III water in GB/T 6682.
4.1 Platinum-Cobalt Standard Colorimetric Solution
Prepared according to the provisions of Chapter 7 of GB/T 9282.1-2008.
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