Search result: GB/T 8026-2023 (GB/T 8026-2014 Older version)
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| GB/T 8026-2023 | English | 189 |
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Test method for drop melting point of petroleum wax, including petrolatum
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GB/T 8026-2023
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| GB/T 8026-2014 | English | 199 |
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Standard test method for melting point of petroleum wax, including petrolatum
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GB/T 8026-2014
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| GB/T 8026-1987 | English | 199 |
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Petroleum waxes and petrolatums--Determination of drop melting point
| Obsolete |
GB/T 8026-1987
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| Standard ID | GB/T 8026-2023 (GB/T8026-2023) | | Description (Translated English) | Test method for drop melting point of petroleum wax, including petrolatum | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | E42 | | Classification of International Standard | 75.140 | | Word Count Estimation | 10,165 | | Date of Issue | 2023-09-07 | | Date of Implementation | 2024-04-01 | | Older Standard (superseded by this standard) | GB/T 8026-2014 | | Drafting Organization | Dalian Petrochemical Research Institute of China Petroleum and Chemical Corporation, Taizhou Customs of the People's Republic of China, Jingmen Branch of China Petroleum and Chemical Corporation, Hansheng Chemical (Fushun) Co., Ltd. | | Administrative Organization | National Petroleum Products and Lubricants Standardization Technical Committee (SAC/TC 280) | | Proposing organization | National Petroleum Products and Lubricants Standardization Technical Committee (SAC/TC 280) | | Issuing agency(ies) | State Administration for Market Regulation, National Standardization Administration |
GB/T 8026-2023. Determination of melting point of petroleum wax and petroleum grease droplets
ICS 75.140
CCSE42
National Standards of People's Republic of China
Replace GB/T 8026-2014
Determination of melting point of petroleum wax and petroleum grease droplets
Published on 2023-09-07
2024-04-01 Implementation
State Administration for Market Regulation
Released by the National Standardization Administration Committee
Preface
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 replaces GB/T 8026-2014 "Method for determination of melting point of petroleum wax and petroleum grease droplets". Compared with GB/T 8026-2014, except for
In addition to structural adjustments and editorial changes, the main technical changes are as follows.
a) Test method B is added to the scope (see Chapter 1);
b) Changed the definition of dripping melting point (see 3.1,.2014 version of 3.1);
c) Added relevant requirements for Method B (see 4.2, 5.2, 7.2, 10.2);
d) The water bath was changed to a bathroom, and the heat transfer medium requirements were added (see 5.1.2, 5.2 of the.2014 version);
e) Added quality control (see Chapter 9).
Please note that some content in this document may be subject to patents. The publisher of this document assumes no responsibility for identifying patents.
This document is proposed and coordinated by the National Petroleum Products and Lubricants Standardization Technical Committee (SAC/TC280).
This document was drafted by. China Petrochemical Corporation Dalian Petrochemical Research Institute, Taizhou Customs of the People's Republic of China, China
Jingmen Branch of Sinopec Chemical Co., Ltd., Hansheng Chemical (Fushun) Co., Ltd.
The main drafters of this document. Guo Shigang, Wang Shaojun, Cai Hongmei, Gao Xufeng, Zhao Bin, Gu Mingdi, Ling Fengxiang, Jiang Xiuhua, Jia Weiming,
Wang Shiyu, Wang Shirley, Liu Jingjie.
This document was first published in 1987, revised for the first time in.2014, and this is the second revision.
Determination of melting point of petroleum wax and petroleum grease droplets
Warning---Personnel using this document should have practical experience in regular laboratory work. The use of this document may involve certain hazardous
materials, equipment and operations, this document does not identify all possible safety issues. Users are responsible for taking appropriate safety and health measures
implementation, and ensure compliance with the conditions stipulated in relevant national laws and regulations.
1 Scope
This document describes a method for the determination of the melting point of petroleum wax and petroleum grease droplets.
Method A in this document is suitable for the determination of the melting point of petroleum wax and petroleum grease droplets.
Method B in this document is suitable for the determination of droplet melting point during the production process of petroleum wax and petroleum grease, and is not applicable to synthetic wax, animal wax and plant wax.
Determination of melting point of wax droplets blended with petroleum wax.
2 Normative reference documents
The contents of the following documents constitute essential provisions of this document through normative references in the text. Among them, the dated quotations
For undated referenced documents, only the version corresponding to that date applies to this document; for undated referenced documents, the latest version (including all amendments) applies to
this document.
GB/T 514-2005 Technical specifications for liquid-in-glass thermometers for petroleum product testing
GB/T 4756 Manual sampling method for petroleum liquids
GB/T 27867 Automatic sampling method for petroleum liquid pipelines
SH/T 0229 Sampling method for solid and semi-solid petroleum products
3 Terms and definitions
The following terms and definitions apply to this document.
3.1
dropmeltingpoint dropmeltingpoint
Under specified conditions, the temperature at which petroleum wax and petroleum grease melt to reach a certain fluidity and drip from the test thermometer or from the sample
The temperature at which the cup is dripping.
4 Principles
4.1 Method A
Immerse the cooled thermometer into the sample so that the sample adheres to the mercury bulb of the thermometer. Place the thermometer with the sample adhered to the test tube
, heat the test tube until the sample melts and the first drop drops from the mercury bulb of the thermometer. The dripping temperature is the drop melting point of the sample.
4.2 Method B
Pour the molten sample into a sample cup with a 2.8mm diameter hole at the bottom, cool it under the specified conditions, and place the sample containing the cooled sample into the cup.
The sample cup is heated at a constant rate in the air, and the sample melts and flows downward to form droplets. The dripping temperature is the droplet melting point of the sample.
......
GB/T 8026-2014
Standard test method for melting point of petroleum wax, including petrolatum
ICS 75.140
E42
National Standards of People's Republic of China
Replacing GB/T 8026-1987
Petroleum waxes and petroleum grease drop melting point determination
Standardtestmethodfordropmeltingpointofpetroleumwax, includingpetrolatum
Issued on. 2014-02-19
2014-06-01 implementation
Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China
Standardization Administration of China released
Foreword
This standard was drafted in accordance with GB/T 1.1-2009 given rules.
This standard replaces GB/T 8026-1987 "petroleum wax and stone of drop melting point determination." This standard and GB/T 8026-1987 phase
Than the main differences are as follows.
--- Added "normative references", "terms and definitions" and "keyword" section (see Chapter 2, Chapter 3 and Chapter 9);
--- No longer listed specifications drop melting point thermometer (see 53, 1987, version 2.3.);
--- Remove the sample melted to 93 ℃ requirements (see 61, 1987 version 3.1.);
--- Description immersion temperature increase of injection (see 6.1);
--- Value gives the allowable difference (see 6.2, 6.3, 3.2, 3.3, 1987 edition).
This standard uses redrafted law revision adopted ASTMD127-08 "petroleum wax (including petroleum grease) Determination of drop melting point" (in English)
prepared by. Taking into account China's national conditions, at the time of adoption of this standard did some modifications. The main difference between this standard and ASTMD127-08 follows.
--- Removed Fahrenheit;
--- Normative references using our corresponding national standards and industry standards;
--- Remove the "meaning and purpose" chapter;
--- For some of the instruments and procedures were refined;
--- Remove the "scope" and "precision" chapter note.
This standard by the National Standardization Technical Committee on products and lubricant oil (SAC/TC280) proposed.
This standard by the National Petroleum Products and Lubricants Standardization Technical Committee petroleum wax products Technical Committee (SAC/TC280 /
SC3) centralized.
This standard was drafted. China Petroleum & Chemical Corporation FRIPP.
The main drafters of this standard. Zhao Bin, Gengchen Chen, Gao Jian.
This standard was first released in May 1987, this is the first revision.
Petroleum waxes and petroleum grease drop melting point determination
Warning. This standard may involve some hazardous materials, equipment and operations, but is not intended for all of the safety issues related to this are mentioned
Recommendations. Therefore, before using this standard, the user has the responsibility to establish appropriate safety and health practices and determine the applicability of the relevant regulations.
1 Scope
This standard specifies the method for determination of petroleum waxes and drop melting point of the petroleum grease.
This standard applies to the determination of petroleum grease and microcrystalline waxes the melting point drops.
2 Normative references
The following documents for the application of this document is essential. For dated references, only the dated version suitable for use herein
Member. For undated references, the latest edition (including any amendments) applies to this document.
GB/T 514 Petroleum products test glass liquid thermometer technical conditions
SH/T 0132 petroleum wax congealing point determination
3 Terms and Definitions
The following terms and definitions apply to this document.
3.1
Drop melting point dropmeltingpoint
Under specified conditions, the sample reaches the melting temperature of a certain mobility dripping from the test when the thermometer.
4. Summary
The cooled thermometer into the sample, the sample adhered to the two thermometers, mercury ball. Will be accompanied by a thermometer placed in the test sample
Tube and heated in a water bath until the sample melts and the first drop from each thermometer mercury ball drip drip drip the average temperature of the sample is
Melting point.
5 Instruments
5.1 tube. diameter 25mm, length of 150mm standard test tube, and is equipped with a plug (such as cork), at the edge of the stopper to allow air flow slot
Pass, opened in the center of the plug insertion hole thermometer.
5.2 water bath. capacity of not less than 1500mL transparent container. Tube immersion depth of not less than 90mm, and there are still about beneath the tube
The aqueous layer was 15mm.
5.3 Test Thermometer. half submerged a bar, a temperature range of 32 ℃ ~ 127 ℃, in line with GB/T 514 number GB -35 thermometer requirements.
5.4 bath thermometers. in the test temperature range of any suitable thermometer, precision 0.5 ℃.
5.5 flat beaker. a sufficient sample can be poured into a diameter of at least 40mm, and has an annular groove in the inner bottom 12mm ± 1mm \u200b\u200bfrom the office.
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