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Determination of phenol in dye products
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Basic data
| Standard ID | GB/T 47085-2026 (GB/T47085-2026) |
| Description (Translated English) | Determination of phenol in dye products |
| Sector / Industry | National Standard (Recommended) |
| Classification of Chinese Standard | G55 |
| Classification of International Standard | 71.100.01,87.060.10 |
| Date of Issue | 2026-01-28 |
| Date of Implementation | 2026-08-01 |
GB/T 47085-2026: Determination of phenol in dye products
---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 71.100.01;87.060.10
CCSG55
National Standards of the People's Republic of China
Determination of phenol in dye products
Published on 2026-01-28
Implemented on August 1, 2026
State Administration for Market Regulation
The State Administration for Standardization issued a statement.
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.
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 China Petroleum and Chemical Industry Federation.
This document is under the jurisdiction of the National Technical Committee on Dye Standardization (SAC/TC134).
This document was drafted by. Zhejiang Jihua Group Co., Ltd., Shenyang Chemical Research Institute Testing Technology Co., Ltd., and Shenyang Chemical Research Institute Co., Ltd.
Limited Liability Company, Xiamen Hanjunke Testing Technology Co., Ltd.
The main drafters of this document are. Shang Lijin, Hu Yanbing, Li Jingyi, Yan Shaode, Chen Meifen, Wang Ming, Zhao Zhimin, and Tao Shuaijiang.
Determination of phenol in dye products
1 Scope
This document describes the determination of dye products using gas chromatography-mass spectrometry (GC/MS) and high performance liquid chromatography (HPLC).
Methods for determining phenol content.
This document applies to the determination of phenol in dye 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 6682-2008 Specifications and test methods for water used in analytical laboratories
GB/T 8170-2008 Rules for rounding off numerical values and the representation and determination of limiting values
3 Terms and Definitions
This document does not contain any terms or definitions that need to be defined.
4.Test Methods
4.1 General Provisions
Unless otherwise specified, only reagents confirmed to be of analytical grade and Grade III water as specified in GB/T 6682-2008 shall be used. Interpretation of test results...
The rounding comparison method shall be performed in accordance with section 4.3.3 of GB/T 8170-2008.
4.2 Gas Chromatography-Mass Spectrometry (Arbitration Method)
4.2.1 Method Principle
In an ultrasonic bath, phenol in the sample was extracted with potassium carbonate solution, acetylated with acetic anhydride to produce phenyl acetate, and then extracted by liquid-liquid extraction.
Phenyl acetate was extracted into n-hexane, and then analyzed and identified by GC/MS, with quantification by external standard method based on peak area.
4.2.2 Reagents or materials
4.2.2.1 Phenol standard, purity ≥ 99.0%.
4.2.2.2 Anhydrous potassium carbonate.
4.2.2.3 Acetic anhydride.
4.2.2.4 Triethylamine.
4.2.2.5 Anhydrous sodium sulfate. Dry at 650℃ for 4 hours, then remove and place in a desiccator for later use.
4.2.2.6 Potassium carbonate solution. 13.8 g/L aqueous solution. Weigh 13.8 g of anhydrous potassium carbonate, dissolve it in water, and make up to 1000 mL.
4.2.2.7 n-Hexane, chromatographic grade.
...
